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我厂生产的门式起重机,主梁结构大多是箱形偏轨梁,大吨位主梁为工字梁,其四条角焊缝设计上要求焊透。过去是采用手弧焊和埋弧焊进行施焊,对角焊缝的焊透问题始终未很好解决。我们在10吨三用门式起重机主梁及超跨度50吨桥式起重机主梁上,采用粗丝CO_2保护焊工艺,一次焊透,满足了设计要求,提高了生产效率,对要求焊透的角焊缝是一项值得推广的工艺方法。 10吨门式起重机偏轨梁焊接 1.焊接设备粗丝CO_2气体保护焊,要求大功率焊接电源。根据生产需要,我们与大连铁道学院一起改装了MZ-1000型埋弧焊机,设计了比较简
I plant gantry crane, girder structure are mostly box-shaped derailment beam, the large tonnage of girders for the I-beam, the four fillet weld design requirements penetration. The past is the use of hand arc welding and submerged arc welding, diagonal welding penetration problem has not been well resolved. We 10-ton three-gantry crane girder and super-span 50 ton overhead crane girder, the use of thick wire CO_2 protection welding process, a penetration, to meet the design requirements and improve production efficiency, the required penetration of the fillet welding Seam is a worthy promotion process. 10 tons of gantry crane rail welding rail 1. Welding equipment coarse wire CO_2 gas shielded welding, welding power requirements of high-power. According to production needs, we and Dalian Railway Institute together modified MZ-1000 submerged arc welding machine, designed a simple