工业技术与职业教育2025，Vol.23Issue(3)：7-10,4.
冷轧低合金镀锌板HC380LAD+Z冲压开裂分析
Analysis of Stamping Cracking in Cold Rolled Low Alloy Galvanized Steel Sheet HC380LAD+Z
尹树春 1刘宇1
作者信息
- 1. 河钢汽车板有限公司,天津 300308||唐山钢铁集团有限责任公司,河北 唐山 063000
- 折叠
摘要
Abstract
This study addresses severe cracking issues observed during the stamping process of automotive components using 1.8 mm thick HC380LAD+Z cold rolled galvanized steel sheets produced by Mill A for an automaker.Abnormalities in the material's chemical composition,mechanical properties,and microstructure prior to stamping were analyzed,alongside simulation analysis of the stamping forming process using AutoForm software.The results indicate that the failure during stamping of HC380LAD+Z galvanized sheets for this component was primarily attributed to material aging effects,which reduced the threshold requirements during forming.Mitigation measures such as lowering the dynamic friction coefficient between the sheet and dies,reducing blank holder force,and optimizing forming processes effectively resolved cracking issues,achieving a qualified part rate exceeding 98%.Furthermore,simulation analysis revealed a strong correlation between the material's n value(strain hardening exponent)and formability.When the n value exceeds 0.13,the risk of part cracking is significantly reduced.关键词
冷轧低合金/冲压/开裂/仿真分析Key words
cold rolled low alloy/stamping/cracking/simulation analysis分类
金属材料引用本文复制引用
尹树春,刘宇..冷轧低合金镀锌板HC380LAD+Z冲压开裂分析[J].工业技术与职业教育,2025,23(3):7-10,4.
