|
|
Thermal Scratch on Surface of SUS430 Stainless Steel Strip in Cold Rolling Process |
Chang-sheng LI1,Jin-shan CHEN1,Wen-long HAN1,You-yuan LI2,Bo FU2 |
1. State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, Liaoning, China 2. Baosteel Stainless Steel Co. , Ltd. , Shanghai 200431, China |
|
|
Abstract 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 rolling 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 of 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 temperature, the thermal scratch is distinctly weaker at the emulsion concentration of 6% than that of 3%.
|
Received: 02 November 2012
Published: 19 March 2014
|
Fund:;Projects Sponsored by the National Natural Science Foundation of China |
Corresponding Authors:
Chang-sheng LI
E-mail: lics@ral.neu.edu.cn
|
|
|
|
[1] |
Zhi-gang Song,En-xiang Pu,. Precipitated phases of superaustenitic stainless steel 654SMO[J]. Chinese Journal of Iron and Steel, 2017, 24(7): 743-749. |
[2] |
Jia-long Tian,,Wei Wang,,Wei Yan,,Zhou-hua Jiang,Yi-yin Shan,,Ke Yang. Microstructure characteristics of segregation zone in 17-4PH stainless steel piston rod[J]. Chinese Journal of Iron and Steel, 2017, 24(7): 718-723. |
[3] |
Hong-huan Mao,Xing Qi,Jing Cao,Li-cong An,Yi-tao Yang*. Effect of Si on high temperature oxidation of 30Cr13 stainless steel[J]. Chinese Journal of Iron and Steel, 2017, 24(5): 561-566. |
[4] |
Zhi-qiang Wei,Xiang-ru Chen*,Hong-gang Zhong,Qi-jie Zhai,Gang Wang. Hot tearing susceptibility of Fe-20.96Cr-2.13Ni-0.15N-4.76Mn-0.01Mo duplex stainless steel[J]. Chinese Journal of Iron and Steel, 2017, 24(4): 421-425. |
[5] |
Long-hu Cao,Cheng-jun Liu*,Qing Zhao,Mao-fa Jiang. Effect of Al2O3 modification on enrichment and stabilization of chromium in stainless steel slag[J]. Chinese Journal of Iron and Steel, 2017, 24(3): 258-265. |
[6] |
Qiang Yu,,Chao-fang Dong,*,Jian-xiong Liang,Zhen-bao Liu,Kui Xiao,Xiao-gang Li. Stress corrosion cracking behavior of PH13-8Mo stainless steel in Cl- solutions[J]. Chinese Journal of Iron and Steel, 2017, 24(3): 282-289. |
|
|
|
|