유리 단자용 무연(Pb-free)솔더 접합 공정 최적화 연구

As automotive industry faces fierce competition, developed countries make use of the ‘Environment-friendly’ issue as a trade barrier. Especially the European Union (EU) reinforced ELV (End of the Life Vehicle) regulation from January 1, 2013 and Korean government also reinforced ‘Act On The Resource Circulation Of Electrical And Electronic Equipment And Vehicle’ from July 1, 2013. Therefore it is not allowed to use Lead (Pb) for glass solder. In order to satisfy the regulation, the leaded solder in automotive glass should be replaced by lead-free solder. Generally, it is easily assumed that there is no problem with changing only solder material to Lead(Pb)-free solder. However, due to the unique property of the glass soldering, the solder material and soldering process should be changed at the same time. We investigated the effect of the flux, soldering temperature to find the best soldering condition which shows good bonding strength between glass and glass terminal. As a result of tying various the soldering conditions, temperature and flux, we finally found out the optimal condition enough to satisfy the automotive test standard.