Product Code: ICAL08_606

Evolution of LAMP Joining to Dissimiliar Metal Welding
Authors:
Yusuke Niwa, Osaka University, Joining and Welding Research Institute; Ibaraki, Osaka Japan
Shuji Kubota, Research Center, Toyobo Co., Ltd; Otsu, Shiga Japan
Yousuke Kawahito, Osaka University, Joining and Welding Research Institute; Ibaraki, Osaka Japan
Seiji Katayama, Osaka University, Joining and Welding Research Institute; Ibaraki, Osaka Japan
Presented at ICALEO 2008

In recent years, transport machines such as automobiles and aircrafts need to be lightened from the environmental viewpoint, because the weight saving connects to saving energy and emission of greenhouse effect gas or air pollutant. In order to achieve this, dissimilar metals joining utilizing light weight metals is promising. However, in direct joining of dissimilar metals such as aluminum alloy and steel, brittle intermetallic compounds are formed between them and dissimilar metal corrosion or bimetal corrosion should occur. In this research, therefore, in order to solve the problems, LAMP (Laser Assisted Metal and Plastic) joining method, which needs neither parts nor tools such as adhesive and rivets, was applied to join dissimilar metal plates sandwiching a plastic plate as insulant. It was confirmed that the method could produce very strong joints between plastics and aluminum alloy or stainless steel. The process of LAMP joining for dissimilar metals and the effect of a plastic sheet between metals will be presented.

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