Ziel
A laser heat source can melt a surface layer, up to 1mm in depth, typically less than the abrasive wear depth for a rolling campaign. Due to the rapid cooling a significant increase in the hardness is produced without affecting the substrate metallurgy. A protective layer can be so applied on selected areas of a roll as part of the dressing procedure.
This project would develop adequate laser based strategies to treat profiled rolls, determining the optimum applications (weld depths, speeds and areas) and applicable roll grades, and additionally, determine the efficiency of the process in technical and economical terms.
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CORUS UK LTD
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