搜索 - 科创

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下面简单科普一下。利用钨合金制成的电极，靠近欲加热之金属，通过氩气拉弧。不可以让电极接触金属，一定要通过气体拉弧。氩气起到冷却和保护作用。大家可以在网上买到焊机，以及找到相应操作知识。

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