Reason Analysis and Control of X65 Steel Plate Edge Wave
PANG Yixing
Abstract：To the edge wave defects of X65 steel plate with 16mm thickness appeared after air cooling, the main reasons were analysed as follows:the temperature difference between the edge with the center, that was accumulated in the controlled rolling and controlled cooling stage, and produced overcooled region, the thermal and structural stress were accumulated, and the edge wave defects were caused by the stresses released in air cooling process. By optimizing the production process, using MULPIC edge masking function and water crown control, the temperature gradient of the steel plate was reduced during controlled rolling and controlled cooling process, it could guarantee the plate transverse cooling uniform. After the improvement, the temperature difference of plate edge with the center was less 25℃and the shape unqualified rate was reduced to 3.5%from 46.7%.
Keywords：X65 steel plateedge waveedge masking functionwater crown control
Publication Date：2015-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：2( 13-14 )