Thermal Scratch on Surface of SUS430 Stainless Steel Strip in Cold Rolling Process

作     者：Chang-sheng LI Jin-shan CHEN Wen-long HAN You-yuan LI Bo FU 

作者机构：State Key Laboratory of Rolling and AutomationNortheastern University Baosteel Stainless Steel Co.Ltd. 

出 版 物：《Journal of Iron and Steel Research(International)》 (钢铁研究学报（英文版）)

年 卷 期：2014年第21卷第3期

页      面：282-286页

核心收录：

学科分类：080503[工学-材料加工工程] 080602[工学-钢铁冶金] 0806[工学-冶金工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0802[工学-机械工程] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 080201[工学-机械制造及其自动化] 

基　　金：Sponsored by National Natural Science Foundation of China(51174057,51274062) National High-technology Researchand Development Program of China(2012AA03A503) 

主　　题：stainless steel thermal scratch emulsion roll surface roughness 

摘      要：The thermal scratch significantly influences the surface quality of the stainless steel in cold strip rolling. The thermal scratch has a close relation to the rolling parameters, the rolls surface and the emulsions used in rolling. In order to explain the thermal scratch on the strip surface, the cold roiling process of SUS430 stainless steel strip was investigated in the laboratory. The thermal scratch defect occurs frequently in the second rolling pass （maximum reduction in height is 32.3 ~）, especially on the lower surface of strips. When concentration and temperature of the emulsion are the same, the thermal scratch on the surface o{ the strip is aggravated with increasing the roll surface roughness. With the same roll surface roughness and emulsion concentration, the thermal scratch is obviously more severe at an emulsion temperature of 63 ℃ than 55 ℃. With the same roll surface roughness and emulsion tempera- ture, the thermal scratch is distinctly weaker at the emulsion concentration of 6 % than that of 3 %.