锻压技术

超高强钢补丁板的热冲压成形工艺

英文标题：Hot stamping process of ultra high strength steel patchworks

作者：高宪臣贺东方李文德刘鹏徐筱璐

单位：东风天汽模（武汉）金属材料成型有限公司

关键词：超高强钢热冲压补丁板虚焊焊点拉裂

分类号：TG35;TG44

出版年,卷(期):页码：2016,41(9):80-83

摘要：

超高强钢补丁板（Ultra High Strength Steel Patchworks, UHSSP）热冲压成形工艺是一种将两种不同形

状尺寸的热冲压钢板（USIBOR1500P等）进行焊接，整体加热至930～950 ℃并保温，之后在模具内完成冲压

成形及淬火工序的复杂热冲压成形技术。针对UHSSP热冲压工艺中存在的焊点虚焊、镀层挤出、焊点拉裂等

技术难点，采用数值模拟和零件试制等方法，进行了零件结构设计、成形工艺分析和产品质量检测等方面的

研究。结果表明，补丁板边界不能设置在主体零件圆角处，补丁板边界与主体零件边界不能完全平齐；优化

了焊接电流、焊接时间和冷却时间等点焊参数；确定了热冲压零件的质量检测方法。采用优化后的热冲压成

形工艺，成功试制出B柱加强板和顶盖弧形里板等零件，并已实现批量生产，产品尺寸精度及产品一致性均

符合装车要求。

Hot stamping process of Ultra High Strength Steel Patchworks (UHSSP) is a complex forming and

quenching technology completed in mold, in which two blanks (USIBOR1500P) of different shapes

and thicknesses are connected with spot welding and then heated to 930-950 ℃. For the

technical difficulties such as loose welding, coating extrusion, welding spot crack, it was

studied the product structure design, forming process and product quality testing etc. by

numerical simulation and parts tryout. The result shows that the patch boundary cannot be

located on the corner of the main parts, the patch parts boundary and the main parts boundary

cannot be on the same plane completely. Then, the spot welding parameters such as welding

current, welding time and cooling time are optimized, and the method for quality inspection is

determined. Furthermore, reinforcement central pillar (B pillar) and double arc pavilion plate

are produced successfully with mass industrial manufacture. The quality and consistency of all

products meet the OEM assembly requirements.

基金项目：

湖北省武汉市工业投资和技术改造项目（2012011 237250070）

高宪臣（1977-），男，学士，工程师

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