锻压技术

轻质合金无铆塑性连接方式及其关键技术的探讨

英文标题：Discussion on mechanical clinching type and its key technology for light-weight alloy

作者：陈超赵升吨韩晓兰崔敏超范淑琴

单位：西安交通大学

关键词：无铆连接塑性变形轻质合金

分类号：

出版年,卷(期):页码：2016,41(1):1-6

摘要：

为了实现车身的轻量化，很多轻质材料如铝合金、镁合金等得到了广泛应用。无铆塑性连接在轻质材料的连接上具有巨大优势。无铆塑性连接利用板材的塑性变形产生机械锁而实现连接，可以应用于连接表面有镀层和不可焊接的板材。首先介绍了板材无铆连接方式及其机制，将其成形过程分为3个阶段。介绍了无铆连接的优点，并对无铆连接、锁铆连接和点焊等连接方式进行了对比。分析了轻质合金板材无铆连接的关键技术。无铆连接的关键技术包括模具几何形状参数、机械锁结构参数、被连接材料板材表面状况、塑性变形程度的大小及对失效模式的影响等。

In order to realize the light-weight of the automobile body，various light-weight materials such as aluminum alloy and magnesium alloy are now being more and more widely used. Mechanical clinching has many advantages in the sheet connection for light-weight alloy. A mechanical interlock is generated by the plastic deformation of the sheets in the mechanical clinching which can be used to join coated or non-weldable sheets. The type and mechanism of mechanical clinching were introduced and the forming process was divided into three stages. The advantages of the mechanical clinching were introduced and then mechanical clinching，self-pierce riveting，spot welding and other connection methods were compared. The key technologies of mechanical clinching were discussed，which includes the geometrical parameters of the dies，the parameters of the mechanical interlock，the surface of the sheets，the plastic deformation degree and its effect on failure mode etc.

基金项目：

国家自然科学基金重点资助项目（51335009）；国家自然科学基金资助项目（51305333）；陕西省科学技术研究发展计划工业攻关计划（2014K07-23）

陈超（1990-），男，博士研究生

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