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车门内板用激光拼焊板开裂问题浅析

Hot Working Technology(2016)

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Abstract
汽车车门内板是使用激光拼焊板的典型深拉延零件.国内某SUV的车门内板使用超低碳材料DC56D+Z的激光拼焊板在冲压过程中出现连续批量开裂的问题.通过分析激光拼焊板的表面粗糙度、力学性能、焊接强度以及零件的成形工艺确定了开裂的原因,并提出有效的整改措施,零件的开裂比例在0.3%以内.通过网格分析检测确认此次改善效果完全满足现有生产要求.
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