节约用铜、以铝代铜,是执行毛主席“备战、备荒、为人民”伟大指示的重要措施之一。根据这一精神,我厂设计和试制成功一台铝线交流手工电弧焊机,经使用证明效果良好。本机的特点是:结构简单,重量轻,体积小,操作维护方便,电弧稳定性很好。主要技术数据(1)电焊机容量21仟伏安;(2)焊接变压器一次电压380伏,二次空载电压70伏;(3)电流调节范围30～300安,使用 Saving copper and replacing aluminum with copper is one of the important measures to implement Chairman Mao’s great instructions on “preparing for war, preparing for war and for the people.” According to this spirit, I successfully design and trial production of a hand-held aluminum arc AC welding machine, the use of proven good results. The machine is characterized by: simple structure, light weight, small size, easy operation and maintenance, good arc stability. Main technical data (1) Welder capacity 21 kVA; (2) 380V primary voltage of welding transformer, 70V secondary idle voltage; (3) Current regulation range 30 ~ 300A, use