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ban dui jie yang wei han tiao dian hu han
Author(s): 
Pages: 6-7
Year: Issue:  S1
Journal: Welding Technology

Keyword:  仰位焊条电弧焊焊接工艺;
Abstract: <正>板对接仰位焊条电弧焊容易出现的缺陷有:气孔、夹渣、背部内凹、焊瘤、焊道偏移等,这些缺陷是由于操作人员的操作方法和工艺参数选择不当引起的,其严重影响了焊缝的质量。因此,为获得优质的焊缝,克服上述焊接缺陷,必须合理地选择操作方法和焊接工艺参数。1焊前准备及焊接工艺参数1.1母材、焊机及焊材焊机选用ZX7-400,焊条选用J507,直径为3.2 mm和4.0 mm等,焊前严格按要求烘干焊条,并备好焊条保温筒、扁铲、清渣锤、角向磨光机。2块300 mm×150 mm×12 mm试板,坡口角度为30°±2°,材质为Q235-B。用角向磨光机把母材坡口两侧表面正反两面20 mm范围内的油锈、污物打磨干净,直至露出金属光泽。
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