Effect of thinning drawing on surface ridging of 430 stainless steel
NAN Hai1，DUANMU Fan-jie2，LI Jing-yuan2，CHEN Yu-lai2
（1. State Key Laboratory of Advanced Stainless Steel Materials， Taiyuan Iron and Steel （Group） Co.， Ltd.， Taiyuan 030003， Shanxi， China 2. School of Materials Science and Engineering， University of Science and Technology Beijing， Beijing 100083， China）
摘要 为了研究变薄拉深对430不锈钢表面起皱的影响，采用DEFORM-2D分析0.56、0.79和1.00 mm 430不锈钢冷轧退火板的拉深-变薄过程，最大变薄率分别为32.14%、26.58%和26.00%，并对0.79 mm厚的板材进行试验验证，测得最大变薄率约为30.38%，与模拟结果接近；通过表面粗糙度数据，可知变薄率越大，改善起皱效果越明显，最优变薄率约为20%，但变薄率太大时，拉深件表面出现明显摩擦划痕；通过EBSD测量，变薄拉深并未改变与起皱相关的{111}〈112〉与{111}〈110〉织构的晶粒体积分数，初步判定通过物理挤压作用可以改善起皱。
Abstract：In order to study the effect of the thinning drawing on the 430 stainless steel surface ridging，the drawing-thinning drawing process of the 430 stainless steel cold rolling annealing plate was analyzed by DEFORM-2D，and largest thinning rates of those plates with 0.56，0.79 and 1.00 mm were 32.14%，26.58% and 26.00% respectively. The experiment on the 0.79 mm plate showed that the real largest thinning rate was 30.38% which was close to the simulation result. Based on the testing value of the surface roughness we concluded that during a proper thinning rate range，a larger thinning rate could reduce the surface ridging more obviously，and the best thinning rate of reducing surface ridging was about 20%. However，when the thinning rate was too large，the friction scratch appeared. According to the result of EBSD，the thinning drawing didn’t change the crystalline grain volme fraction of {111}〈112〉 and {111}〈110〉 texture，which could be explained that the surface ridging can reduce the surface ridging because of the physical squeeze.
南 海，端木樊杰，李静媛，陈雨来. 变薄拉深对430不锈钢表面起皱的影响[J]. , 2019, 54(1): 56-62.
NAN Hai，DUANMU Fan-jie，LI Jing-yuan，CHEN Yu-lai. Effect of thinning drawing on surface ridging of 430 stainless steel. Iron and Steel, 2019, 54(1): 56-62.
2019, Vol. 54 
