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用镀锡薄板制作金属包装容器时,过去一直是采用咬口锡焊的方法。一般圆形罐身的制作都要经过剪切、切角和圈圆、端折、咬口、压平、锡焊、等多道工序。采用上述工序不但生产效率低、劳动强度大,而且在锡焊时所用的锡铅焊料中的铅和焊药中的氯化锌、氯化铵都可挥发出对人体有害的物质,污染环境。为此,我厂自行设计并研制了ZFN-9半自动缝焊机。该焊机是专门用来焊接镀锡薄板的,它与一般的缝焊机主要区别
When using tinplate to make metal containers, it used to be a seaming method. The production of the general circular cans have to go through cutting, cutting angle and circle, end fold, bite, flatten, soldered, and many other processes. The use of the above process not only low production efficiency, labor-intensive, and in the soldering tin-lead solder used in the lead and solder in the zinc chloride, ammonium chloride can be volatile substances harmful to humans, polluting the environment. To this end, I plant designed and developed ZFN-9 semi-automatic seam welder. The welder is designed to weld tin plate, which is the main difference with the general seam welder