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上侧焊道的焊接:根据预位置的大小宽窄深浅选择合适的电弧运动方法。如果根部宽度稍小于焊条直径时采用直线或直线往复法,此法最为简单,如果焊道宽但不深时,采用斜锯齿法,如果宽而深时采用斜圆圈法。如果窄而深采用直线往复法(可以很好地防止根部未熔,未熔是主要缺陷)宽而深且根部窄时采用三角法。
焊接完成后首先要保证上下两面侧无夹角,二要保证平整,以利于下一层
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