Transactions of Materials and Heat Treatment

Title：Discussion on mechanical clinching type and its key technology for light-weight alloy

Authors： Chen Chao Zhao Shengdun Han Xiaolan Cui Minchao Fan Shuqin

Unit： Xi'an Jiaotong University

KeyWords： mechanical clinching plastic deformation light-weight alloy

ClassificationCode：

year,vol(issue):pagenumber：2016,41(1):1-6

Abstract：

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.

Funds：

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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