【摘 要】
：
一、引言上海工业设备安装公司加工厂自1978年以来,坚持用MAG焊生产液化石油气瓶(以下简称液化瓶),目前年产量已达六万只以上。采用该焊接新工艺生产液化瓶,焊速高,焊缝成形
【机 构】
：
上海交通大学,上海交通大学,上海交通大学,上海工业设备安装公司,上海工业设备安装公司,上海工业设备安装公司,上海工业设备安装公司,
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一、引言上海工业设备安装公司加工厂自1978年以来,坚持用MAG焊生产液化石油气瓶(以下简称液化瓶),目前年产量已达六万只以上。采用该焊接新工艺生产液化瓶,焊速高,焊缝成形美观。但长期以来,焊缝气孔问题十分突出,直接影响生产的进一步发展。据焊缝X光检验结果统计,气孔约占不合格片总数的70％左右,
I. INTRODUCTION Since its establishment in 1978, Shanghai Industrial Equipment Installation Company has insisted on producing liquefied petroleum gas cylinders (hereinafter referred to as liquefied petroleum gas bottles) by MAG welding. At present, the annual output has reached more than 60,000. The use of the new production process of welding liquefied bottle, high-speed welding, weld appearance. But for a long time, the issue of weld porosity is very prominent, which has a direct impact on the further development of production. According to the results of X-ray weld inspection statistics, stomata accounted for about 70% of the total number of unqualified films,
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