冲压板拉伸应变痕缺陷分析及改进

Hebei Metallurgy(2014)

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Abstract
冷轧板冲压后表面产生拉伸应变痕,影响客户后续正常使用.经过对正常板带试样与拉伸应变痕板带试样的检测、调查和分析,确认板带产生拉伸应变痕的原因是连退线出口焊缝处平整延伸率不足,板带未被完全切除而导致钢板存在屈服平台.通过优化平整机和出口切头尾工艺参数,消除平整延伸率达不到工艺要求的板带,保证了客户冲压时板带不产生拉伸应变痕.
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