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横焊的方法

2025-04-01 16:41:46

推荐回答（1个）

回答1：

焊接有四种位置,分别是,平,横,仰,立.其中仰焊最难,对于横焊,选用CO2气体保焊,手工电弧焊都行,它们都适用于横焊,埋弧自动焊不行它只适合于平焊位置的焊接.至于怎么焊,方法如下:
不开坡口的对接横焊，当板厚为3-5毫米时应采用双面焊。正面焊时焊条直径为3.2-4毫米,焊条与下板成75-80度.当焊件较薄时,用直线往返形运条法,使熔池金属有机会冷却,不致于使熔池温度过高,可以防止烧穿.焊件较厚时,可采用短弧直线形或小斜圆圈形运条法焊接,便可得到合适的熔深,运条速度应稍快些,旦要均匀,避免焊条熔化金属过多地聚集在某一点上形成焊瘤和焊缝上部咬边等缺陷。
开坡口的对接横焊,第一道焊缝选用细焊条,当间隙大时宜采用直线往复形运条法.第二道焊缝采用斜圆圈运条法.在施焊过程中,为防止焊缝表面咬边和下面产生熔化金属下淌现象,每个斜圆圈形与焊颖中心线的斜度不得大于45度.当焊条末端运到斜圆上面时,电弧应更短,并稍停片刻,然后缓慢将电弧引到焊缝的下边,即原先电弧停留的旁边,这样做能有效地避免各种缺陷,使焊缝成形良好。

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