welding-alloys.com 9 Solutions for continuous casting rolls Continuous casting rolls include foot rolls at the mould exit, strand guide segment rolls, including bending zone rolls, as well as withdrawal and straightening rolls. These rolls operate under demanding conditions, including thermal cycling, exposure to spray water and scale. Oxidation and corrosion are most prevalent in the upper segments, while higher contact stresses in the withdrawal and straightening zones lead to wear, rolling contact fatigue (spalling), and surface cracking. Using our dedicated range of welding consumables and qualified procedures, we apply position-specific weld overlays with carefully controlled heat input and dilution. Rolls are then machined and thoroughly inspected to restore original geometry and surface condition. Performance in service Refurbished rolls are restored to the specified diameter, ensuring accurate geometry and consistent performance in service. This also restores the correct profile and surface condition, helping to maintain stable strand guidance, alignment and precise roll gap control throughout the segments. Position-specific weld overlays enhance resistance to oxidation and corrosion in upper segments, while improving resistance to wear and rolling contact fatigue (spalling) in lower segments. The result is extended service life between roll changes and a reduction in unplanned rollrelated stoppages. Back to contents page
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