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230问答网 > 氧气，已炔气割工作原理是什么，回火会照成什么后果，怎么防止回火

氧气，已炔气割工作原理是什么，回火会照成什么后果，怎么防止回火

2025-04-04 01:07:45

推荐回答（1个）

回答1：

氧气是助燃气体，乙炔是可燃气体，两种气体混合点燃后会产生高温，可以切割金属板料。回火处置不当，火焰可随着乙炔管道迅速蔓延至管道顶端，乙炔瓶因受高温影响，易发生爆炸事故。发生回火后，应尽快关闭乙炔阀门、氧气阀门和切割氧阀门，预防回火最常见的方法是控制割嘴与板料的距离，割嘴与板料之间的距离不能太近。因乙炔的压力没有氧气的高，所以在乙炔瓶压力不足的情况下也易有回火发生，所以应当及时更换乙炔。

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