铝板无铆钉自冲铆接质量及强度的试验研究

An experimental research on quality and strength of aluminous joints by clinch joining technique

由于具有传统点焊连接无法替代的优势,无铆钉自冲铆接技术在汽车、家电等行业中得到了较广泛的应用。铆接接头的质量及强度是人们关注的热点问题,而铆接工艺参数和模具结构参数是影响接头质量和强度的主要因素。通过对同种铝板件L5在不同的压边力及模具结构参数下的无铆钉自冲铆接的试验研究,分析这些参数对铆接接头的失效形式、断面质量和剪切强度的影响规律。研究结果表明:接头剪切时的主要失效形式是剪断;合理的铆接工艺参数及模具结构参数可以得到比较理想的接头断面质量及较高的接头剪切强度。

Due to its advantages over the spot welding technique,clinch joining technique is applied extensively in the automobile,electrical apparatus,etc. The quality and strength of the joints are the hot issues of the technique,which are severely affected by the processing parameters and die structure parameters. Clinch joining experiments of aluminous sheets L5 were carried out under various blank holder forces and die structure parameters,and the influence of the parameters on the failure mode,section quality and strength of the joints were analyzed.The results show that the failure of the joints is mainly the shearing and a good section quality and high shearing strength of the joints can be obtained by reasonable processing parameters and die structure parameters.