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507焊條怎麼避免氣孔
507焊條怎麼避免氣孔
更新时间:2025-05-18 00:09:25

  1、預熱保溫:焊接前溫度300-350度烘幹,然後恒溫1-1.5小時後緩降到100度保溫,焊接時也要用保溫桶裝焊條,随取随用。

  2、焊接手法:焊接時極性反接,焊接角度70-80度(焊條與工件的角度),焊條3mm電流用120A左右,焊接速度不宜過快,這樣基本能控制氣孔。

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