{"id":49483,"date":"2024-06-10T14:29:49","date_gmt":"2024-06-10T12:29:49","guid":{"rendered":"https:\/\/welding-alloys.zerobox.co.za\/?p=49483"},"modified":"2025-02-26T12:54:03","modified_gmt":"2025-02-26T11:54:03","slug":"phenomenes-de-corrosion-dans-la-petrochimie","status":"publish","type":"post","link":"https:\/\/welding-alloys.zerobox.co.za\/fr\/litterature-technique\/phenomenes-de-corrosion-dans-la-petrochimie\/","title":{"rendered":"Ph\u00e9nom\u00e8nes de corrosion dans la p\u00e9trochimie"},"content":{"rendered":"<div id='full_slider_1'  class='avia-fullwidth-slider main_color avia-shadow   avia-builder-el-0  el_before_av_section  avia-builder-el-first   container_wrap sidebar_left'  >\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-m7q4dx9-674c21a70f4adaa612fc02244d066433\">\n#top #wrap_all .avia-slideshow .av-slideshow-caption.av-m7q4dx9-674c21a70f4adaa612fc02244d066433__0 .avia-caption-title{\nfont-size:38px;\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-slideshow av-m7q4dx9-674c21a70f4adaa612fc02244d066433 avia-slideshow-no scaling av_slideshow_full avia-slide-slider av-slideshow-ui av-control-default av-slideshow-manual av-loop-once av-loop-manual-endless av-default-height-applied   avia-slideshow-1' data-slideshow-options=\"{&quot;animation&quot;:&quot;slide&quot;,&quot;autoplay&quot;:false,&quot;loop_autoplay&quot;:&quot;once&quot;,&quot;interval&quot;:5,&quot;loop_manual&quot;:&quot;manual-endless&quot;,&quot;autoplay_stopper&quot;:false,&quot;noNavigation&quot;:false,&quot;bg_slider&quot;:false,&quot;keep_padding&quot;:false,&quot;hoverpause&quot;:false,&quot;show_slide_delay&quot;:0}\"  itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><ul class='avia-slideshow-inner ' style='padding-bottom: 22.321899736148%;'><li  class='avia-slideshow-slide av-m7q4dx9-674c21a70f4adaa612fc02244d066433__0  av-single-slide slide-1 slide-odd'><div data-rel='slideshow-1' class='avia-slide-wrap '   ><div class='av-slideshow-caption av-m7q4dx9-674c21a70f4adaa612fc02244d066433__0 caption_fullwidth caption_left caption_left_framed caption_framed'><div class=\"container caption_container\"><div class=\"slideshow_caption\"><div class=\"slideshow_inner_caption\"><div class=\"slideshow_align_caption\"><h2 class='avia-caption-title '  itemprop=\"name\" >Ph\u00e9nom\u00e8nes de corrosion dans la p\u00e9trochimie<\/h2><\/div><\/div><\/div><\/div><\/div><img decoding=\"async\" fetchpriority=\"high\" class=\"wp-image-48724 avia-img-lazy-loading-not-48724\"  src=\"https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/Corrosion-banner.jpg\" width=\"1895\" height=\"423\" title='Corrosion banner' alt='Corrosion banner'  itemprop=\"thumbnailUrl\"  style='min-height:250px; min-width:1120px; ' srcset=\"https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/Corrosion-banner.jpg 1895w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/Corrosion-banner-300x67.jpg 300w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/Corrosion-banner-1030x230.jpg 1030w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/Corrosion-banner-768x171.jpg 768w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/Corrosion-banner-1536x343.jpg 1536w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/Corrosion-banner-1500x335.jpg 1500w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/Corrosion-banner-705x157.jpg 705w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/Corrosion-banner-450x100.jpg 450w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/Corrosion-banner-600x134.jpg 600w\" sizes=\"(max-width: 1895px) 100vw, 1895px\" \/><\/div><\/li><\/ul><\/div><\/div>\n<div id='av_section_1'  class='avia-section av-l7dwme5-ad25ce6f1652c9d6ab67a1a9f3813c82 alternate_color avia-section-small avia-no-border-styling  avia-builder-el-1  el_after_av_slideshow_full  el_before_av_section  breadcrumb-container avia-bg-style-scroll container_wrap sidebar_left'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-small units'><div class='post-entry post-entry-type-page post-entry-49483'><div class='entry-content-wrapper clearfix'>\n\n\n<\/div><\/div><\/div><!-- close content main div --><\/div><\/div><div id='av_section_2'  class='avia-section av-21po6f1-474e832e7d5718e7833408ec2e5c5a28 main_color avia-section-default avia-no-border-styling  avia-builder-el-3  el_after_av_section  el_before_av_section  avia-bg-style-scroll container_wrap sidebar_left'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-small units'><div class='post-entry post-entry-type-page post-entry-49483'><div class='entry-content-wrapper clearfix'>\n<div class='flex_column_table av-jvnarkt-9abecff7b70b1b33f2b34a384ae495a6 sc-av_two_fifth av-equal-height-column-flextable'><div  class='flex_column av-jvnarkt-9abecff7b70b1b33f2b34a384ae495a6 av_two_fifth  avia-builder-el-4  el_before_av_three_fifth  avia-builder-el-first  first flex_column_table_cell av-equal-height-column av-align-top av-animated-generic left-to-right  '     ><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-jguqiyl-3a3751a4be69a41b986f5a5081a73f80\">\n#top .av-special-heading.av-jguqiyl-3a3751a4be69a41b986f5a5081a73f80{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-jguqiyl-3a3751a4be69a41b986f5a5081a73f80 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-jguqiyl-3a3751a4be69a41b986f5a5081a73f80 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-jguqiyl-3a3751a4be69a41b986f5a5081a73f80 av-special-heading-h1 blockquote modern-quote  avia-builder-el-5  el_before_av_textblock  avia-builder-el-first '><h1 class='av-special-heading-tag '  itemprop=\"headline\"  >Ph\u00e9nom\u00e8nes de corrosion dans la p\u00e9trochimie<\/h1><div class='av-subheading av-subheading_below'><a href=\"https:\/\/welding-alloys.zerobox.co.za\/fr\/secteur\/petrole-gaz-et-petrochimie\/\">P\u00e9trole, gaz et p\u00e9trochimie<\/a>\n<\/div><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-j5caorh-8b3f5e8c7b6b3e8bcfd541d08c134fdd '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p>L&#8217;industrie p\u00e9trochimique fait face \u00e0 un ennemi invisible mais redoutable : la corrosion. Les \u00e9quipements essentiels qui entrent en contact avec des produits chimiques corrosifs sont vuln\u00e9rables \u00e0 ce ph\u00e9nom\u00e8ne naturel. La corrosion peut entra\u00eener une d\u00e9t\u00e9rioration des infrastructures, des pertes financi\u00e8res importantes et, surtout, des risques pour la s\u00e9curit\u00e9. Pour contrer cet ennemi silencieux, les entreprises p\u00e9trochimiques ont d\u00e9velopp\u00e9 des strat\u00e9gies sophistiqu\u00e9es reposant sur l&#8217;utilisation de rev\u00eatements de protection, d&#8217;alliages r\u00e9sistants \u00e0 la corrosion et de m\u00e9thodes de surveillance de pointe.<\/p>\n<p><strong>Le monde complexe de la p\u00e9trochimie<\/strong><\/p>\n<p>La p\u00e9trochimie englobe un vaste \u00e9ventail de technologies utilisant le p\u00e9trole ou le gaz naturel pour produire divers compos\u00e9s chimiques. Ces processus impliquent des r\u00e9actions chimiques complexes et sont \u00e0 la base de nombreux produits de notre vie quotidienne, des solvants aux m\u00e9dicaments, en passant par les plastiques et les carburants.<\/p>\n<\/div><\/section><\/p><\/div><div class='av-flex-placeholder'><\/div><div  class='flex_column av-ilni531-ebe7650361f45f42aacfd447b7ac240e av_three_fifth  avia-builder-el-7  el_after_av_two_fifth  avia-builder-el-last  flex_column_table_cell av-equal-height-column av-align-top av-animated-generic right-to-left  '     ><p><div  class='avia-button-wrap av-lysi4crt-daac4eb326eada8eb4192c7970d0aa15-wrap avia-button-center  avia-builder-el-8  el_before_av_iconlist  avia-builder-el-first  margin-bottom-10 text-left'><a href='https:\/\/welding-alloys.zerobox.co.za\/fr\/contactez-nous\/'  class='avia-button av-lysi4crt-daac4eb326eada8eb4192c7970d0aa15 av-link-btn avia-icon_select-yes-right-icon avia-size-medium avia-position-center avia-color-theme-color'  target=\"_blank\"  rel=\"noopener noreferrer\"  aria-label=\"Contacter un expert\"><span class='avia_iconbox_title' >Contacter un expert<\/span><span class='avia_button_icon avia_button_icon_right avia-iconfont avia-font-custom' data-av_icon='\ue803' data-av_iconfont='custom' ><\/span><\/a><\/div><br \/>\n<div  class='avia-icon-list-container av-iczj03h-7ae7de5273132ea3930dbe5fb02aab4d  avia-builder-el-9  el_after_av_button  el_before_av_image  link-list margin-top-0'><ul class='avia-icon-list avia_animate_when_almost_visible avia-icon-list-left av-iconlist-small av-iczj03h-7ae7de5273132ea3930dbe5fb02aab4d avia-iconlist-animate'>\n<li><div class='iconlist_icon av-hm817tp-ca880e9e6cc3a22224c7f8637252162a avia-font-custom avia-iconfont avia-font-custom'><span class='av-icon-char' data-av_icon='\ue800' data-av_iconfont='custom' aria-hidden=\"true\"><\/span><\/div><article class=\"article-icon-entry av-iconlist-empty\"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class=\"iconlist_content_wrap\"><header class=\"entry-content-header\" aria-label=\"Ic\u00f4ne : &lt;a href=&#039;https:\/\/welding-alloys.zerobox.co.za\/fr\/societe\/presence\/&#039; title=&#039;o\u00f9 nous trouver&#039; target=&quot;_blank&quot;  rel=&quot;noopener noreferrer&quot;&gt;o\u00f9 nous trouver&lt;\/a&gt;\"><div class='av_iconlist_title iconlist_title_small  '  itemprop=\"headline\" ><a href='https:\/\/welding-alloys.zerobox.co.za\/fr\/societe\/presence\/' title='o\u00f9 nous trouver' target=\"_blank\"  rel=\"noopener noreferrer\">o\u00f9 nous trouver<\/a><\/div><\/header><div class='iconlist_content '  itemprop=\"text\" ><\/div><\/div><footer class=\"entry-footer\"><\/footer><\/article><div class=\"iconlist-timeline\"><\/div><\/li>\n<li><div class='iconlist_icon av-h5bz7p9-40ad46a725339ee469487337434ae6a3 avia-font-custom avia-iconfont avia-font-custom'><span class='av-icon-char' data-av_icon='\ue801' data-av_iconfont='custom' aria-hidden=\"true\"><\/span><\/div><article class=\"article-icon-entry av-iconlist-empty\"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class=\"iconlist_content_wrap\"><header class=\"entry-content-header\" aria-label=\"Ic\u00f4ne : &lt;a href=&#039;https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2021\/12\/oil-and-gas-applications.pdf&#039; title=&#039;t\u00e9l\u00e9charger la brochure&#039; target=&quot;_blank&quot;  rel=&quot;noopener noreferrer&quot;&gt;t\u00e9l\u00e9charger la brochure&lt;\/a&gt;\"><div class='av_iconlist_title iconlist_title_small  '  itemprop=\"headline\" ><a href='https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2021\/12\/oil-and-gas-applications.pdf' title='t\u00e9l\u00e9charger la brochure' target=\"_blank\"  rel=\"noopener noreferrer\">t\u00e9l\u00e9charger la brochure<\/a><\/div><\/header><div class='iconlist_content '  itemprop=\"text\" ><\/div><\/div><footer class=\"entry-footer\"><\/footer><\/article><div class=\"iconlist-timeline\"><\/div><\/li>\n<\/ul><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-gwgi0hp-70a5a4b27a422971c67391cc477115e6\">\n.avia-image-container.av-gwgi0hp-70a5a4b27a422971c67391cc477115e6 img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-gwgi0hp-70a5a4b27a422971c67391cc477115e6 .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-gwgi0hp-70a5a4b27a422971c67391cc477115e6 av-styling- avia-align-center  avia-builder-el-10  el_after_av_iconlist  avia-builder-el-last '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" fetchpriority=\"high\" class='wp-image-48732 avia-img-lazy-loading-not-48732 avia_image ' src=\"https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/corrosion-illustration-1.jpg\" alt='corrosion illustration 1' title='corrosion illustration 1'  height=\"667\" width=\"1000\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/corrosion-illustration-1.jpg 1000w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/corrosion-illustration-1-300x200.jpg 300w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/corrosion-illustration-1-768x512.jpg 768w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/corrosion-illustration-1-705x470.jpg 705w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/corrosion-illustration-1-450x300.jpg 450w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/corrosion-illustration-1-600x400.jpg 600w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/div><\/div><\/div><\/p><\/div><\/div><!--close column table wrapper. Autoclose: 1 --><\/div><\/div><\/div><!-- close content main div --><\/div><\/div><div id='av_section_3'  class='avia-section av-gb1b8m5-fc676fd54c37dc6b5f566c97270f9f23 alternate_color avia-section-default avia-no-border-styling  avia-builder-el-11  el_after_av_section  el_before_av_section  center-circles avia-bg-style-scroll container_wrap sidebar_left'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-small units'><div class='post-entry post-entry-type-page post-entry-49483'><div class='entry-content-wrapper clearfix'>\n<div  class='flex_column av-g28gcgt-df65dde66716e04aaace05b6065660cb av_two_fifth  avia-builder-el-12  el_before_av_three_fifth  avia-builder-el-first  first flex_column_div av-animated-generic left-to-right  '     ><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-fe3mhdp-9e0796ac504623cbf96bb9e2f9fab374\">\n.avia-image-container.av-fe3mhdp-9e0796ac504623cbf96bb9e2f9fab374 img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-fe3mhdp-9e0796ac504623cbf96bb9e2f9fab374 .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-fe3mhdp-9e0796ac504623cbf96bb9e2f9fab374 av-styling- avia-align-center  avia-builder-el-13  avia-builder-el-no-sibling '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" fetchpriority=\"high\" class='wp-image-48736 avia-img-lazy-loading-not-48736 avia_image ' src=\"https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/Distillation-column.png\" alt='Distillation column' title='Distillation column'  height=\"500\" width=\"500\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/Distillation-column.png 500w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/Distillation-column-300x300.png 300w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/Distillation-column-80x80.png 80w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/Distillation-column-36x36.png 36w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/Distillation-column-180x180.png 180w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/Distillation-column-120x120.png 120w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/Distillation-column-450x450.png 450w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/Distillation-column-100x100.png 100w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/div><\/div><\/div><\/div><div  class='flex_column av-f2yrbrx-eba7cf860042e22f7f2b3a50431f1793 av_three_fifth  avia-builder-el-14  el_after_av_two_fifth  avia-builder-el-last  flex_column_div av-animated-generic right-to-left  '     ><p><section  class='av_textblock_section av-eanf2yl-2b4cd54615baef0770261ac2c091addd '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p><strong>Les d\u00e9fis de la conversion p\u00e9trochimique<\/strong><\/p>\n<p>Les produits issus de la distillation du p\u00e9trole brut ne correspondent pas toujours aux demandes du march\u00e9. C&#8217;est l\u00e0 que les proc\u00e9d\u00e9s de conversion entrent en jeu, effectuant des transformations mol\u00e9culaires essentielles. Il existe trois types de craquage : le craquage thermique, le craquage catalytique et l&#8217;hydrocraquage. Ces processus, tout en permettant l&#8217;obtention de produits d\u00e9sir\u00e9s, exposent les \u00e9quipements \u00e0 des temp\u00e9ratures et \u00e0 des pressions \u00e9lev\u00e9es, engendrant ainsi des ph\u00e9nom\u00e8nes de corrosion et de corrosion sous contrainte.<\/p>\n<p>Dans les installations de raffinage du p\u00e9trole, des aciers chrome\/molybd\u00e8ne sont largement utilis\u00e9s dans la partie<strong> cracking<\/strong> en raison de leurs propri\u00e9t\u00e9s de r\u00e9sistance au fluage.<\/p>\n<p><strong>Qu\u2019est-ce que le cracking\u00a0?<\/strong><\/p>\n<p>Pour faire simple, le cracking est l\u2019op\u00e9ration qui permet, \u00e0 partir d\u2019un p\u00e9trole brut, de le s\u00e9parer pour en extraire des produits d\u00e9riv\u00e9s tels que le gasoil, l\u2019essence, le k\u00e9ros\u00e8ne etc.<\/p>\n<p>Chacun de ces produits se vaporise \u00e0 une temp\u00e9rature qui lui est propre, permettant une s\u00e9paration optimale de ces \u00e9l\u00e9ments.<\/p>\n<\/div><\/section><br \/>\n<div  class='avia-button-wrap av-dzxdmbh-31272ecc796d418b514991b228c0419b-wrap avia-button-left  avia-builder-el-16  el_after_av_textblock  avia-builder-el-last '><a href='https:\/\/welding-alloys.zerobox.co.za\/fr\/application-industrielle\/placage-de-colonne\/'  class='avia-button av-dzxdmbh-31272ecc796d418b514991b228c0419b av-link-btn avia-icon_select-yes-right-icon avia-size-medium avia-position-left avia-color-dark'  target=\"_blank\"  rel=\"noopener noreferrer\"  aria-label=\"Exemple de placage d\u2019une colonne de distillation\"><span class='avia_iconbox_title' >Exemple de placage d\u2019une colonne de distillation<\/span><span class='avia_button_icon avia_button_icon_right avia-iconfont avia-font-custom' data-av_icon='\ue803' data-av_iconfont='custom' ><\/span><\/a><\/div><\/p><\/div><\/div><\/div><\/div><!-- close content main div --><\/div><\/div><div id='av_section_4'  class='avia-section av-dl3onnh-e92c3b527ab12de62fa89354e02dc97f main_color avia-section-default avia-no-border-styling  avia-builder-el-17  el_after_av_section  el_before_av_section  avia-bg-style-scroll container_wrap sidebar_left'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-small units'><div class='post-entry post-entry-type-page post-entry-49483'><div class='entry-content-wrapper clearfix'>\n<div class='flex_column_table av-d57cntp-8421d48dc1cce5a13ffa179431f67620 sc-av_one_full av-equal-height-column-flextable'><div  class='flex_column av-d57cntp-8421d48dc1cce5a13ffa179431f67620 av_one_full  avia-builder-el-18  el_before_av_one_half  avia-builder-el-first  first flex_column_table_cell av-equal-height-column av-align-top av-animated-generic bottom-to-top  '     ><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-ctfg13x-1a1e8634f0378204d51821000cdf1251\">\n#top .av-special-heading.av-ctfg13x-1a1e8634f0378204d51821000cdf1251{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-ctfg13x-1a1e8634f0378204d51821000cdf1251 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-ctfg13x-1a1e8634f0378204d51821000cdf1251 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-ctfg13x-1a1e8634f0378204d51821000cdf1251 av-special-heading-h5 blockquote modern-quote  avia-builder-el-19  avia-builder-el-no-sibling '><h5 class='av-special-heading-tag '  itemprop=\"headline\"  >Il existe trois proc\u00e9d\u00e9s de cracking qui sont d\u00e9taill\u00e9s ci-dessous :<\/h5><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><\/div><\/div><!--close column table wrapper. Autoclose: 1 --><div  class='flex_column av-c5oypp9-316d1125d54dc0d63dde14bd7ecf1356 av_one_half  avia-builder-el-20  el_after_av_one_full  el_before_av_one_half  first flex_column_div  column-top-margin'     ><section  class='av_textblock_section av-bjhjzr1-c3ec9213a7e9c39fc339dd55574e667d '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p><strong>Le craquage thermique<\/strong><\/p>\n<p>Le craquage thermique, proc\u00e9d\u00e9 le plus ancien, s&#8217;est appliqu\u00e9 d&#8217;abord aux distillats moyens (gazoles) puis \u00e0 la partie l\u00e9g\u00e8re des r\u00e9sidus (distillats sous vide).<\/p>\n<p>Par d\u00e9composition thermique \u00e0 une temp\u00e9rature voisine de 500 \u00b0C et sous des pressions \u00e9lev\u00e9es, ces distillats sont transform\u00e9s en essences. La r\u00e9action donne lieu \u00e0 la formation de coke.<\/p>\n<p>C&#8217;est lors de la mise au point des premi\u00e8res installations industrielles de craquage thermique qu&#8217;est apparu le four tubulaire, v\u00e9ritable r\u00e9acteur de l&#8217;unit\u00e9, dont l&#8217;emploi s&#8217;est ensuite g\u00e9n\u00e9ralis\u00e9 dans toutes les autres installations de raffinage comme un moyen efficace de fournir des calories aux produits trait\u00e9s.<\/p>\n<p>Actuellement, le craquage thermique est pratiqu\u00e9 sur la partie lourde des r\u00e9sidus (r\u00e9sidus sous vide), de fa\u00e7on mod\u00e9r\u00e9e par viscor\u00e9duction, ou de fa\u00e7on s\u00e9v\u00e8re par cok\u00e9faction. Il est aussi utilis\u00e9 avec de la vapeur (vapocraquage) en p\u00e9trochimie pour produire les ol\u00e9fines.<\/p>\n<p>La conversion g\u00e9n\u00e9ralis\u00e9e des distillats sous vide et la diminution des quantit\u00e9s de p\u00e9trole bruts trait\u00e9s ont entra\u00een\u00e9 la s\u00e9paration de tous les distillats sous vide. Il en a r\u00e9sult\u00e9 une production corr\u00e9lative de r\u00e9sidu sous vide bien sup\u00e9rieure aux besoins des bitumes. Les exc\u00e9dents tr\u00e8s visqueux sont dilu\u00e9s avec du gazole pour obtenir une viscosit\u00e9 du m\u00e9lange conforme \u00e0 la sp\u00e9cification requise pour le fioul lourd.<\/p>\n<p>La viscor\u00e9duction du r\u00e9sidu sous vide est un craquage thermique mod\u00e9r\u00e9 de plus en plus employ\u00e9 car, outre une faible production de distillats l\u00e9gers, il permet d&#8217;obtenir un r\u00e9sidu moins visqueux r\u00e9duisant ainsi la quantit\u00e9 de gazole de dilution introduite dans le fioul lourd et par cons\u00e9quent la quantit\u00e9 de fioul lourd fabriqu\u00e9. Dans certains cas, cette quantit\u00e9 est encore sup\u00e9rieure aux besoins du march\u00e9.<\/p>\n<p>La cok\u00e9faction du r\u00e9sidu sous vide, qui est un craquage thermique s\u00e9v\u00e8re, se substitue alors \u00e0 la viscor\u00e9duction. Le but de cette op\u00e9ration, le plus souvent discontinue (cok\u00e9faction diff\u00e9r\u00e9e), est de fabriquer du coke qui sera ult\u00e9rieurement br\u00fbl\u00e9 en l&#8217;\u00e9tat ou gaz\u00e9ifi\u00e9.<\/p>\n<\/div><\/section><\/div><div  class='flex_column av-bhg0yjh-cb79238a663cb1783d4fa9b1857f4d69 av_one_half  avia-builder-el-22  el_after_av_one_half  el_before_av_one_full  flex_column_div av-animated-generic left-to-right  column-top-margin'     ><style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-azfhha5-919580aa763dd9f970fd8b8916771d86\">\n.avia-image-container.av-azfhha5-919580aa763dd9f970fd8b8916771d86 img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-azfhha5-919580aa763dd9f970fd8b8916771d86 .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-azfhha5-919580aa763dd9f970fd8b8916771d86 av-styling- avia-align-center  avia-builder-el-23  avia-builder-el-no-sibling '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" fetchpriority=\"high\" class='wp-image-48728 avia-img-lazy-loading-not-48728 avia_image ' src=\"https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/corrosion-illustration-2.jpg\" alt='corrosion illustration 2' title='corrosion illustration 2'  height=\"1000\" width=\"667\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/corrosion-illustration-2.jpg 667w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/corrosion-illustration-2-200x300.jpg 200w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/corrosion-illustration-2-470x705.jpg 470w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/corrosion-illustration-2-450x675.jpg 450w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/corrosion-illustration-2-600x900.jpg 600w\" sizes=\"(max-width: 667px) 100vw, 667px\" \/><\/div><\/div><\/div><\/div><div  class='flex_column av-airtosd-9179073c3c96913b0fbd6c5ccc1794c0 av_one_full  avia-builder-el-24  el_after_av_one_half  avia-builder-el-last  first flex_column_div av-animated-generic right-to-left  column-top-margin'     ><p><section  class='av_textblock_section av-9qr78v1-b020b9940c4c9c123dbe048f3cadcab8 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p><strong>Le craquage catalytique<\/strong><\/p>\n<p>Le craquage catalytique des distillats sous vide a depuis longtemps remplac\u00e9 le craquage thermique.<\/p>\n<p>Le catalyseur fluidifi\u00e9 en fines particules facilite la r\u00e9action qui s&#8217;effectue \u00e0 une pression voisine de celle de l&#8217;atmosph\u00e8re. Il est r\u00e9g\u00e9n\u00e9r\u00e9 en continu : le coke qui se d\u00e9pose \u00e0 sa surface est br\u00fbl\u00e9 au fur et \u00e0 mesure.<\/p>\n<p>Les installations industrielles de craquage catalytique sont tr\u00e8s complexes : outre le r\u00e9acteur et le r\u00e9g\u00e9n\u00e9rateur, elles comportent une s\u00e9paration des produits craqu\u00e9s, sorte de p\u00e9trole brut synth\u00e9tique, ainsi qu&#8217;une r\u00e9cup\u00e9ration d&#8217;\u00e9nergie puisque la temp\u00e9rature de r\u00e9g\u00e9n\u00e9ration est proche de 700 \u00b0C.<\/p>\n<p>Les catalyseurs et la technologie de la r\u00e9action ont \u00e9volu\u00e9 pour augmenter \u00e0 la fois la conversion et la production d&#8217;essences. Maintenant, les catalyseurs tr\u00e8s actifs sont des tamis mol\u00e9culaires, le temps de contact est de l&#8217;ordre de quelques secondes et le rendement en essence voisin de 50%. Des installations de craquage catalytique de r\u00e9sidu atmosph\u00e9rique commencent \u00e0 se d\u00e9velopper, mais ce produit doit pr\u00e9alablement \u00eatre \u00e9pur\u00e9 pour \u00e9viter l&#8217;empoisonnement du catalyseur.<\/p>\n<\/div><\/section><br \/>\n<section  class='av_textblock_section av-99aq2ot-cb92b6d19f79f8ad388b2cddd842839a '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p><strong>L&#8217;hydrocraquage et l&#8217;hydrod\u00e9m\u00e9tallisation<\/strong><\/p>\n<p>Le craquage catalytique en pr\u00e9sence d&#8217;hydrog\u00e8ne est pratiqu\u00e9 sur les distillats sous vide (hydrocraquage) et sur les r\u00e9sidus atmosph\u00e9riques (hydrod\u00e9m\u00e9tallisation).<\/p>\n<p>L&#8217;hydrocraquage r\u00e9alise une transformation presque compl\u00e8te en essence, carbur\u00e9acteurs et gazoles, et s&#8217;effectue en une seule ou deux \u00e9tapes suivant que l&#8217;on vise la fabrication maximale de gazoles ou d&#8217;essences. Une forte pression d&#8217;hydrog\u00e8ne (100 \u00e0 150 atmosph\u00e8res) associ\u00e9e \u00e0 une temp\u00e9rature mod\u00e9r\u00e9e (350 \u00e0 450 \u00b0C) limite les d\u00e9p\u00f4ts de coke sur le catalyseur.<\/p>\n<p>Le choix d\u2019acier chrome molybd\u00e8ne est pertinent pour la r\u00e9sistance au fluage eu \u00e9gard des fortes temp\u00e9ratures appliqu\u00e9es allant de 350 \u00e0 700\u00b0C dans trois proc\u00e9d\u00e9s de conversion list\u00e9s ci-dessus. Malheureusement il pr\u00e9sente ses limites en termes de r\u00e9sistance \u00e0 la corrosion et \u00e0 la corrosion sous contrainte.<\/p>\n<p>Ces aciers ne sont pas appropri\u00e9s pour la r\u00e9sistance \u00e0 la corrosion, entra\u00eenant ainsi la n\u00e9cessit\u00e9 de d\u00e9poser par placage une couche protectrice (protection contre la corrosion) sur ces tubulures pour ralentir la vitesse de corrosion.<\/p>\n<\/div><\/section><\/p><\/div>\n<\/p>\n<\/div><\/div><\/div><!-- close content main div --><\/div><\/div><div id='av_section_5'  class='avia-section av-8s5fuot-6ab36cdf3e19e35799a233a1ad479e98 alternate_color avia-section-default avia-no-border-styling  avia-builder-el-27  el_after_av_section  el_before_av_section  center-circles avia-bg-style-scroll container_wrap sidebar_left'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-small units'><div class='post-entry post-entry-type-page post-entry-49483'><div class='entry-content-wrapper clearfix'>\n<div  class='flex_column av-8h3m09p-69ab78362cee9b984b85734766ab88fe av_two_fifth  avia-builder-el-28  el_before_av_three_fifth  avia-builder-el-first  first flex_column_div av-animated-generic right-to-left  '     ><div  class='avia-slideshow av-85tmiv1-05ff34bab5641d0a7d734c55331df798 avia-slideshow-no scaling av_slideshow avia-slide-slider  avia-builder-el-29  avia-builder-el-no-sibling  custom-easy-slider full-imgx av-slideshow-ui av-control-default av-nav-arrows-visible av-no-slider-navigation av-slideshow-autoplay av-loop-endless av-loop-manual-endless av-default-height-applied avia-slideshow-2' data-slideshow-options=\"{&quot;animation&quot;:&quot;slide&quot;,&quot;autoplay&quot;:true,&quot;loop_autoplay&quot;:&quot;endless&quot;,&quot;interval&quot;:5,&quot;loop_manual&quot;:&quot;manual-endless&quot;,&quot;autoplay_stopper&quot;:false,&quot;noNavigation&quot;:false,&quot;bg_slider&quot;:false,&quot;keep_padding&quot;:false,&quot;hoverpause&quot;:false,&quot;show_slide_delay&quot;:0}\"  itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><ul class='avia-slideshow-inner ' style='padding-bottom: 56.3%;'><li  class='avia-slideshow-slide av-85tmiv1-05ff34bab5641d0a7d734c55331df798__0  slide-1 slide-odd'><a href=\"https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/STELLOY-6-G-Valve-.jpg\" data-srcset=\"https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/STELLOY-6-G-Valve-.jpg 1000w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/STELLOY-6-G-Valve--300x169.jpg 300w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/STELLOY-6-G-Valve--768x432.jpg 768w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/STELLOY-6-G-Valve--705x397.jpg 705w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/STELLOY-6-G-Valve--450x253.jpg 450w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/STELLOY-6-G-Valve--600x338.jpg 600w\" data-sizes=\"(max-width: 1000px) 100vw, 1000px\"  data-rel='slideshow-2' class='avia-slide-wrap '   ><img decoding=\"async\" fetchpriority=\"high\" class=\"wp-image-48740 avia-img-lazy-loading-not-48740\"  src=\"https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/STELLOY-6-G-Valve-.jpg\" width=\"1000\" height=\"563\" title='STELLOY 6 G Valve' alt='STELLOY 6 G Valve '  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/STELLOY-6-G-Valve-.jpg 1000w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/STELLOY-6-G-Valve--300x169.jpg 300w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/STELLOY-6-G-Valve--768x432.jpg 768w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/STELLOY-6-G-Valve--705x397.jpg 705w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/STELLOY-6-G-Valve--450x253.jpg 450w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/STELLOY-6-G-Valve--600x338.jpg 600w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/a><\/li><li  class='avia-slideshow-slide av-85tmiv1-05ff34bab5641d0a7d734c55331df798__1  slide-2 slide-even'><a href=\"https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/Wing-Valve.jpg\" data-srcset=\"https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/Wing-Valve.jpg 734w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/Wing-Valve-220x300.jpg 220w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/Wing-Valve-517x705.jpg 517w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/Wing-Valve-450x613.jpg 450w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/Wing-Valve-600x817.jpg 600w\" data-sizes=\"(max-width: 734px) 100vw, 734px\"  data-rel='slideshow-2' class='avia-slide-wrap '   ><img decoding=\"async\" fetchpriority=\"high\" class=\"wp-image-48744 avia-img-lazy-loading-not-48744\"  src=\"https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/Wing-Valve.jpg\" width=\"734\" height=\"1000\" title='Wing Valve' alt='Wing Valve'  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/Wing-Valve.jpg 734w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/Wing-Valve-220x300.jpg 220w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/Wing-Valve-517x705.jpg 517w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/Wing-Valve-450x613.jpg 450w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/Wing-Valve-600x817.jpg 600w\" sizes=\"(max-width: 734px) 100vw, 734px\" \/><\/a><\/li><li  class='avia-slideshow-slide av-85tmiv1-05ff34bab5641d0a7d734c55331df798__2  slide-3 slide-odd'><a href=\"https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/Plug-Valve-rotated.jpg\" data-srcset=\"https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/Plug-Valve-rotated.jpg 563w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/Plug-Valve-169x300.jpg 169w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/Plug-Valve-397x705.jpg 397w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/Plug-Valve-450x799.jpg 450w\" data-sizes=\"(max-width: 563px) 100vw, 563px\"  data-rel='slideshow-2' class='avia-slide-wrap '   ><img decoding=\"async\" fetchpriority=\"high\" class=\"wp-image-48793 avia-img-lazy-loading-not-48793\"  src=\"https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/Plug-Valve-rotated.jpg\" width=\"563\" height=\"1000\" title='Plug Valve rotated' alt='Plug Valve rotated'  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/Plug-Valve-rotated.jpg 563w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/Plug-Valve-169x300.jpg 169w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/Plug-Valve-397x705.jpg 397w, https:\/\/welding-alloys.zerobox.co.za\/wp-content\/uploads\/2024\/05\/Plug-Valve-450x799.jpg 450w\" sizes=\"(max-width: 563px) 100vw, 563px\" \/><\/a><\/li><\/ul><div class='avia-slideshow-arrows avia-slideshow-controls' ><a href='#prev' class='prev-slide  avia-svg-icon avia-font-svg_entypo-fontello' data-av_svg_icon='left-open-big' data-av_iconset='svg_entypo-fontello' tabindex='-1' title=\"Pr\u00e9c\u00e9dent\"><svg version=\"1.1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"15\" height=\"32\" viewBox=\"0 0 15 32\" preserveAspectRatio=\"xMidYMid meet\" aria-labelledby='av-svg-title-1' aria-describedby='av-svg-desc-1' role=\"graphics-symbol\" aria-hidden=\"true\">\n<title id='av-svg-title-1'>Pr\u00e9c\u00e9dent<\/title>\n<desc id='av-svg-desc-1'>Pr\u00e9c\u00e9dent<\/desc>\n<path d=\"M14.464 27.84q0.832 0.832 0 1.536-0.832 0.832-1.536 0l-12.544-12.608q-0.768-0.768 0-1.6l12.544-12.608q0.704-0.832 1.536 0 0.832 0.704 0 1.536l-11.456 11.904z\"><\/path>\n<\/svg><span class='avia_hidden_link_text'>Pr\u00e9c\u00e9dent<\/span><\/a><a href='#next' class='next-slide  avia-svg-icon avia-font-svg_entypo-fontello' data-av_svg_icon='right-open-big' data-av_iconset='svg_entypo-fontello' tabindex='-1' title=\"Suivant\"><svg version=\"1.1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"15\" height=\"32\" viewBox=\"0 0 15 32\" preserveAspectRatio=\"xMidYMid meet\" aria-labelledby='av-svg-title-2' aria-describedby='av-svg-desc-2' role=\"graphics-symbol\" aria-hidden=\"true\">\n<title id='av-svg-title-2'>Suivant<\/title>\n<desc id='av-svg-desc-2'>Suivant<\/desc>\n<path d=\"M0.416 27.84l11.456-11.84-11.456-11.904q-0.832-0.832 0-1.536 0.832-0.832 1.536 0l12.544 12.608q0.768 0.832 0 1.6l-12.544 12.608q-0.704 0.832-1.536 0-0.832-0.704 0-1.536z\"><\/path>\n<\/svg><span class='avia_hidden_link_text'>Suivant<\/span><\/a><\/div><\/div><\/div><div  class='flex_column av-m1fasd-5e02d74c3bf15a5ddf5a16e4d2ad4558 av_three_fifth  avia-builder-el-30  el_after_av_two_fifth  el_before_av_textblock  flex_column_div av-animated-generic right-to-left  '     ><section  class='av_textblock_section av-5l6mxst-5a1bf59650102ab6fdaa77d98d3d4f02 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p>Notre large gamme d\u2019alliages base nickel <a href=\"https:\/\/welding-alloys.zerobox.co.za\/fr\/application\/consommables-de-soudage-de-placage\/?yith_wcan=1&#038;family_name=gamma-2\" target=\"_blank\" rel=\"noopener\">GAMMA<\/a> et base <a href=\"https:\/\/welding-alloys.zerobox.co.za\/fr\/application\/consommables-de-soudage-de-placage\/?yith_wcan=1&#038;family_name=stelloy-2\" target=\"_blank\" rel=\"noopener\">COBALT<\/a> ainsi que notre gamme de fils fourr\u00e9s aust\u00e9nitiques <a href=\"https:\/\/welding-alloys.zerobox.co.za\/fr\/application\/consommables-de-soudage-de-placage\/?yith_wcan=1&#038;family_name=tetra-2\" target=\"_blank\" rel=\"noopener\">TETRA<\/a> r\u00e9pondent \u00e0 l\u2019ensemble des sollicitations d\u2019usure par corrosion (que ce soit en soudage ou en placage) qui peuvent \u00eatre engendr\u00e9es en p\u00e9trochimie, sur les appareils \u00e0 pression comme sur les <a href=\"https:\/\/welding-alloys.zerobox.co.za\/fr\/application-industrielle\/vannes-et-composants\/\" target=\"_blank\" rel=\"noopener\">\u00e9l\u00e9ments de robinetterie<\/a> et notamment les vannes avec une sp\u00e9cificit\u00e9 qui nous est propre\u00a0:<\/p>\n<ul>\n<li>Les alliages sans bismuth (TETRA)<\/li>\n<li>Les alliages custom made<\/li>\n<\/ul>\n<\/div><\/section><\/div><section  class='av_textblock_section av-5cmtu1p-2936375dbcf483e1184089ada7a89f45 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p>L\u2019un des avantages des fils fourr\u00e9s modernes en acier inoxydable (comme notre gamme TETRA) est le d\u00e9tachement facile du laitier, permettant d\u2019obtenir des cordons de soudure semblables \u00e0 ceux produits par les \u00e9lectrodes enrob\u00e9es de derni\u00e8re g\u00e9n\u00e9ration.<\/p>\n<p>L\u2019absence de bismuth dans les fils permet d\u2019\u00e9viter la fissuration de compos\u00e9s \u00e0 hautes temp\u00e9ratures.<\/p>\n<p>De nombreux appareils \u00e0 pression fonctionnent \u00e0 des temp\u00e9ratures souvent sup\u00e9rieures \u00e0 450\u00b0C.<\/p>\n<p>Les fils fourr\u00e9s conventionnels en acier inoxydable rutile contiennent g\u00e9n\u00e9ralement des ajouts d&#8217;oxyde de bismuth (Bi2O3) afin d&#8217;am\u00e9liorer le d\u00e9tachement du laitier. Le d\u00e9p\u00f4t soud\u00e9 contient donc des traces de bismuth.<\/p>\n<p>La plupart des soudures en acier inoxydable r\u00e9sistant \u00e0 la corrosion sont mises en service telles quelles, sans traitement thermique. De telles constructions sont destin\u00e9es \u00e0 des applications o\u00f9 la temp\u00e9rature de service ne d\u00e9passe pas 300\u00b0C. Dans ces conditions, l&#8217;utilisation d&#8217;oxydes \u00e0 bas point de fusion pour am\u00e9liorer le d\u00e9tachement du laitier ne pose pas de probl\u00e8me.<\/p>\n<p>Cependant, de nombreux aciers inoxydables sont \u00e9galement utilis\u00e9s dans des applications o\u00f9 la r\u00e9sistance aux temp\u00e9ratures \u00e9lev\u00e9es est importante.<\/p>\n<p>Dans ces cas, les constructions doivent fr\u00e9quemment fonctionner \u00e0 plus de 500\u00b0C et, dans les joint soud\u00e9es, le bismuth et d&#8217;autres \u00e9l\u00e9ments \u00e0 bas point de fusion peuvent s\u00e9gr\u00e9ger aux joints de grains et provoquer des fissures.<\/p>\n<p>Les fils auxquels on a d\u00e9lib\u00e9r\u00e9ment ajout\u00e9 du bismuth ne sont pas recommand\u00e9s pour des applications sup\u00e9rieures \u00e0 500\u00b0C ou lorsqu\u2019un traitement de recuit est effectu\u00e9 apr\u00e8s le soudage. Dans ce cas, il est recommand\u00e9 d\u2019utiliser des fils fourr\u00e9s en acier inoxydable ne contenant pas plus de 0,002 % de Bi dans le m\u00e9tal soud\u00e9. Ces fils sont sp\u00e9cifi\u00e9s conform\u00e9ment \u00e0 l&#8217;ASME II C SFA-5.22 et \u00e0 l&#8217;EN ISO 17633.<\/p>\n<p>Welding Alloys produit depuis plusieurs ann\u00e9es des fils r\u00e9pondant \u00e0 ce crit\u00e8re et propose une large gamme de fils fourr\u00e9s sans bismuth.<\/p>\n<p>Ces produits conviennent non seulement aux hautes temp\u00e9ratures, mais aussi pour les soudures soumises \u00e0 un traitement thermique de stabilisation ou de mise en solution.<\/p>\n<p>Cette gamme de fils fourr\u00e9s constitue donc le meilleur compromis pour la lutte contre la corrosion.<\/p>\n<\/div><\/section>\n<\/div><\/div><\/div><!-- close content main div --><\/div><\/div><div id='av_section_6'  class='avia-section av-5086g0t-ae908b7059a246e967381d8be4668391 main_color avia-section-default avia-no-border-styling  avia-builder-el-33  el_after_av_section  el_before_av_section  avia-bg-style-scroll container_wrap sidebar_left'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-small units'><div class='post-entry post-entry-type-page post-entry-49483'><div class='entry-content-wrapper clearfix'>\n<div class='flex_column_table av-4khbmyl-8c81dd6e40d4803770722ec0ceac9c11 sc-av_one_full av-equal-height-column-flextable'><div  class='flex_column av-4khbmyl-8c81dd6e40d4803770722ec0ceac9c11 av_one_full  avia-builder-el-34  avia-builder-el-no-sibling  first flex_column_table_cell av-equal-height-column av-align-top av-animated-generic left-to-right  '     ><section  class='av_textblock_section av-42f8fj1-9daaf96b0fdffb01bbccf9ea83689976 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p><strong>Quelles diff\u00e9rences existe-t-il entre un fil fourr\u00e9 et un fil massif ?<\/strong><\/p>\n<p>Un fil massif provient d\u2019une coul\u00e9e qui est ensuite manufactur\u00e9e pour en faire un fil de soudage. Ceci induit une taille de lot de plusieurs tonnes avec une chimie qui est la chimie du lot produit.<\/p>\n<p>Un fil fourr\u00e9 est constitu\u00e9 d\u2019un feuillard et d\u2019une charge de poudre associ\u00e9s qui, une fois fabriqu\u00e9s, feront un fil de soudage. Ce mix permet de r\u00e9aliser un panel de nuances et de chimie infinies et ce en quantit\u00e9 \u00e9conomique, ce qui est pour cette gamme d\u2019aciers inoxydables un avantage certain.<\/p>\n<p>En termes de soudabilit\u00e9, le fil fourr\u00e9 permet une multitude de solutions comme par exemple le soudage avec ou sans protection gazeuse, il peut \u00e9galement \u00eatre soud\u00e9 en toutes positions. Nous produisons donc des fils fourr\u00e9s en acier inoxydable r\u00e9pondant aux classifications normalis\u00e9s et ayant un taux de ferrite ma\u00eetris\u00e9 et\/ou sur mesure. Un vrai plus pour lutter contre les ph\u00e9nom\u00e8nes de corrosion.<\/p>\n<\/div><\/section><\/div><\/div><!--close column table wrapper. Autoclose: 1 -->\n<\/p>\n<\/div><\/div><\/div><!-- close content main div --><\/div><\/div><div id='av_section_7'  class='avia-section av-3jnb0fx-a6aaa0007884c1c2fe4abc873cc0ef69 alternate_color avia-section-default avia-no-border-styling  avia-builder-el-36  el_after_av_section  el_before_av_section  center-circles avia-bg-style-scroll container_wrap sidebar_left'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-small units'><div class='post-entry post-entry-type-page post-entry-49483'><div class='entry-content-wrapper clearfix'>\n<div  class='flex_column av-2w6ervh-62c5dfe92f5d80fe9e53ef27901e3e1b av_one_full  avia-builder-el-37  avia-builder-el-no-sibling  first flex_column_div av-animated-generic right-to-left  '     ><section  class='av_textblock_section av-2il4qxp-580f8332e518804f3b9d79260b26170e '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p><strong>Pourquoi utiliser un fil fourr\u00e9 plut\u00f4t qu\u2019un fil massif\u00a0?<\/strong><\/p>\n<p>Un fil fourr\u00e9 n\u2019est ni plus ni moins qu\u2019une \u00e9lectrode enrob\u00e9e automatique. Une \u00e9lectrode enrob\u00e9e est constitu\u00e9e d\u2019une \u00e2me m\u00e9tallique enrob\u00e9e d\u2019une charge de poudre. Un fil fourr\u00e9 est constitu\u00e9 d\u2019un feuillard que l\u2019on va former en U afin d\u2019y incorporer une charge de poudre, puis nous allons le refermer pour en faire un tube. C\u2019est donc une \u00e9lectrode enrob\u00e9e invers\u00e9e qui va pr\u00e9senter beaucoup de similitude en termes de soudage. Par exemple la multitude de possibilit\u00e9 d\u2019alliages r\u00e9alisables ; le profil de p\u00e9n\u00e9tration, la douceur d\u2019arc pour n\u2019en citer que quelques-uns.<\/p>\n<\/div><\/section><\/div>\n\n<\/div><\/div><\/div><!-- close content main div --><\/div><\/div><div id='av_section_8'  class='avia-section av-291wcot-30482aa47b02e41cd968fdc12241a9ba main_color avia-section-default avia-no-border-styling  avia-builder-el-39  el_after_av_section  avia-builder-el-last  avia-bg-style-scroll container_wrap sidebar_left'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-small units'><div class='post-entry post-entry-type-page post-entry-49483'><div class='entry-content-wrapper clearfix'>\n<div class='flex_column_table av-1fv6kal-ae26a2a4ad61be2f1160685c69980428 sc-av_one_full av-equal-height-column-flextable'><div  class='flex_column av-1fv6kal-ae26a2a4ad61be2f1160685c69980428 av_one_full  avia-builder-el-40  avia-builder-el-no-sibling  first flex_column_table_cell av-equal-height-column av-align-top av-animated-generic bottom-to-top  '     ><p><section  class='av_textblock_section av-17dtc4d-a8fec3f749651fbb010e4967e097def6 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p><strong>Pourquoi WA plut\u00f4t qu\u2019un autre fournisseur ?<\/strong><\/p>\n<p><strong>\u00a0<\/strong><\/p>\n<p>Il y a plusieurs raisons pour lesquelles on pourrait choisir Welding Alloys comme fournisseur de consommables pour lutter efficacement contre les ph\u00e9nom\u00e8nes d\u2019usure. En voici quelques-unes :<\/p>\n<p><strong>Expertise technique <\/strong>: Welding Alloys est un leader mondial dans la production de produits de soudage d\u00e9di\u00e9s principalement \u00e0 la maintenance r\u00e9paration. Welding Alloys a une expertise technique approfondie et est en mesure de fournir des solutions de haute qualit\u00e9 pour une grande vari\u00e9t\u00e9 de probl\u00e9matiques de soudage et de rev\u00eatement.<\/p>\n<p><strong>Innovation <\/strong>: Welding Alloys investit continuellement dans la recherche et le d\u00e9veloppement pour am\u00e9liorer la performance et la durabilit\u00e9 de ses solutions anti usure (rechargement dur, placage anti corrosion, \u2026).<\/p>\n<p><strong>Qualit\u00e9 <\/strong>: Les produits de Welding Alloys sont reconnus pour leur qualit\u00e9. Welding Alloys utilise des mati\u00e8res premi\u00e8res soigneusement s\u00e9lectionn\u00e9es et suit un processus de production rigoureux pour garantir des produits finaux de haute qualit\u00e9.<\/p>\n<p><strong>Service client <\/strong>: Welding Alloys accorde une grande importance \u00e0 la satisfaction de ses clients. Welding Alloys offre un service client de qualit\u00e9 et est toujours pr\u00eat \u00e0 aider les clients \u00e0 r\u00e9soudre leurs probl\u00e8mes de soudage et de rev\u00eatement.<\/p>\n<p><strong>Gamme de produits <\/strong>: Welding Alloys propose un large \u00e9ventail d\u2019alliages de soudage et de rev\u00eatements anti usure (corrosion, abrasion, impact, \u2026) adapt\u00e9s \u00e0 de nombreuses industries. Cela signifie que les clients peuvent trouver toutes les solutions de maintenance r\u00e9paration dont ils ont besoin aupr\u00e8s d&#8217;un seul et m\u00eame fournisseur, ce qui simplifie la gestion des fournisseurs et la logistique.<\/p>\n<p>Vous faites face \u00e0 des probl\u00e8mes de corrosion\u00a0? Nous pouvons vous aider.<\/p>\n<\/div><\/section><br \/>\n<div  class='avia-button-wrap av-s7fu9p-77dc96b6e9e33e2078e1f7c94d0778eb-wrap avia-button-left  avia-builder-el-42  el_after_av_textblock  avia-builder-el-last '><a href='https:\/\/welding-alloys.zerobox.co.za\/fr\/contactez-nous\/'  class='avia-button av-s7fu9p-77dc96b6e9e33e2078e1f7c94d0778eb av-link-btn avia-icon_select-yes-right-icon avia-size-medium avia-position-left avia-color-theme-color'  target=\"_blank\"  rel=\"noopener noreferrer\"  aria-label=\"Contacter un expert\"><span class='avia_iconbox_title' >Contacter un expert<\/span><span class='avia_button_icon avia_button_icon_right avia-iconfont avia-font-custom' data-av_icon='\ue803' data-av_iconfont='custom' ><\/span><\/a><\/div><\/p><\/div><\/div><!--close column table wrapper. Autoclose: 1 --><\/div><\/div><\/div><!-- close content main div --><\/div><\/div><div id='after_section_8'  class='main_color av_default_container_wrap container_wrap sidebar_left'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-small units'><div class='post-entry post-entry-type-page post-entry-49483'><div class='entry-content-wrapper clearfix'>\n","protected":false},"excerpt":{"rendered":"<p>L&#8217;industrie p\u00e9trochimique fait face \u00e0 un ennemi invisible mais redoutable : la corrosion. Les \u00e9quipements essentiels qui entrent en contact avec des produits chimiques corrosifs sont vuln\u00e9rables \u00e0 ce ph\u00e9nom\u00e8ne naturel.<\/p>\n","protected":false},"author":1,"featured_media":49322,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_relevanssi_hide_post":"","_relevanssi_hide_content":"","_relevanssi_pin_for_all":"","_relevanssi_pin_keywords":"","_relevanssi_unpin_keywords":"","_relevanssi_related_keywords":"","_relevanssi_related_include_ids":"","_relevanssi_related_exclude_ids":"","_relevanssi_related_no_append":"","_relevanssi_related_not_related":"","_relevanssi_related_posts":"","_relevanssi_noindex_reason":"","inline_featured_image":false,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[13073],"tags":[],"technical-articles-filter":[13310,13034,13044],"class_list":["post-49483","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-litterature-technique","technical-articles-filter-litterature-technique","technical-articles-filter-petrochimie","technical-articles-filter-corrosion-fr"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.4 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Ph\u00e9nom\u00e8nes de corrosion dans la p\u00e9trochimie | Welding Alloys<\/title>\n<meta name=\"description\" content=\"L&#039;industrie p\u00e9trochimique fait face \u00e0 un ennemi invisible mais redoutable : la corrosion. 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