焊接电弧的物理基础

15563947202 · 发表于 2025-7-25 08:10:09

焊接电弧发出强烈的光和热，但却不是一般的物质燃烧现象。实质上，焊接电弧是在焊接电源供给一定电压的两个电极之间或者电极与焊件之间的一种气体放电现象，亦即电荷通过两电极间的气体空间的一种导电现象（见图）。借助于这种气体放电，把电能转变为热能、机械能和光能。焊接时主要是利用电弧的热能和机械能。

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