家用电器热镀锌板外壳氩弧焊接成型技术探索应用.pdfVIP

第21 期 制冷科技 No.21 2013 年1 月 Refrigeration ScienceTechnology Jan.2013 家用电器热镀锌板外壳氩弧焊接成型技术探索应用 余文鹏，李剑，郑健斌，朱波，李震 (美的中央空调事业部 顺德工厂) 摘 要：在中央空调事业部的空气能热水机水箱外壳制造上，高端的产品一直采用的是电镀锌板焊接成型，这种方法喷 涂成型美观，成型技术成熟，而用于普通型号产品则用热镀锌板扣接成型，因为对热镀锌薄板焊接技术缺少摸索，且 因其锌层比电镀锌板厚，氩弧焊成型难以控制，烟尘较大，所以一直采用扣接成型。扣接成型技术虽然简单，但相较 于焊接成型存在几点不足：首先，扣接成型比焊接成型需要消耗更多的板材定额；其次，扣接成型的连接缝存在高度 差和缝隙，影响了产品的外观品质；再者，扣接成型在生产中工序多，工艺路线长，操作岗位多，相较于焊接成型效 率低下不少；最后，扣接成型的连接缝强度仅为焊接成型连接缝的1/10，给产品质量造成了隐患。为了提升产品质量， 降低生产成本，中央空调事业部顺德工厂工程技术部门对热镀锌板氩弧焊接成型技术进行了探索性的实验和研究，得 到了一套可行，高效的工艺方案。实验结果表明：热镀锌薄板在适当的焊接工艺参数下，辅以简单的防护措施，可以 得到成型优良，表面美观的热镀锌板外壳制品，可以推广应用。 关键词：氩弧焊(TIG)；热镀锌板；焊接成型；家电外壳 The Research and Application Of TIG On Hot-dip Galvanized Sheet Household Appliances Shell FormingTechnology Wengpeng Yu, Jian Li,Jianbin Zheng, Bo Zhu, Zhen Li Abstract：TIG welding is widely applied in high-end air-source pump container shell forming technology at department of centre air conditioning, the thchnology is ripe to production and the product quality is excellent. Meanwhile in normal grade product Hot-dip Galvanized Sheet shell, fastening is main forming technology, the fastening technology need more sheet size, the fastening joint has altitude difference and interstice which should be harmful to spray coating process and the strength of fastening joint is 1/10 of welding joint. For these reason, making TIG welding technology applied in Hot-dip Galvanized Sheet shell forming is very important and meaningful. In TIG welding applied in Hot-dip Galvanized experiment which carryed out by department of technique show that, the excellent quality Hot-dip Galvanized Sheet shell can be manufactured by a total and suit