Analysis and control of high carbon steel 50-2 stamping toe cap cracking
ZHANG Li-min1,2, ZHU Li-guang2,3, ZHANG Cai-jun1,2, XIAO Peng-cheng1,2, LIU Zeng-xun1,2
1. College of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063300, Hebei, China; 2. Hebei Engineering Research Center of High Quality Steel Continuous Casting, Tangshan 063300, Hebei, China; 3. College of Materials Scienceand Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, Hebei, China
Abstract：The high carbon steel 50-2 was cracked seriously during the stamping process after annealing in a bell-type annealing furnace. Using photoelectric direct reading spectrometer, Neophot Ⅲ type optical microscope, TCH600 nitrogen oxygen analyzer, rockwell hardness measurement method (HR) of class B scale on the defect sample chemical composition, organization performance carried on the thorough research. The results show that high nitrogen content and short soaking time of anneal are the main causes of stamping toe cap cracking. By optimizing steelmaking process and annealing process, the cracking defect rate of stamping has been greatly reduced, and the product quality has finally met the production requirements.
张利民, 朱立光, 张彩军, 肖鹏程, 刘增勋. 高碳钢50-2冲压鞋包头开裂原因分析与控制[J]. 中国冶金, 2021, 31(2): 44-49.
ZHANG Li-min, ZHU Li-guang, ZHANG Cai-jun, XIAO Peng-cheng, LIU Zeng-xun. Analysis and control of high carbon steel 50-2 stamping toe cap cracking[J]. China Metallurgy, 2021, 31(2): 44-49.
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2021, Vol. 31 
