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一、引言 我校焊接专业74届部分师生于一九七七年五月和北京金属结构厂合作,共同进行了富氩混合气体熔化极脉冲弧焊(以下简称GMA—P)对18—8不锈钢焊接中存在某些工艺问题进行试验研究。 该厂于1974年试制成功一体式脉冲弧焊机,并就A_r+O_2,A_r+CO_2等混合气体对18—8不锈钢进行过一些初步的焊接工艺试验,并采用A_r+O_2作为保护气试用于生产,但
I. INTRODUCTION The 74th session of our school welding professional teachers and students in May 1977 and the Beijing Metal Structure Factory cooperation, jointly carried out argon-rich mixed gas melting pulsed pulse welding (hereinafter referred to as GMA-P) 18-8 There are some technical problems in the welding of stainless steel for experimental research. The plant trial success in 1974, integrated pulse arc welding machine, and A_r + O_2, A_r + CO_2 and other gases on 18-8 stainless steel had some preliminary welding process test, and the use of A_r + O_2 as a protective gas test Production, however