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碳钢和不锈钢焊接用什么型号焊条

更新时间: 2020-11-30 15:49:04     

A302或者A307型号的焊条,即E309型。因为这两种作为异种钢的焊接,更要严格的控制焊缝中母材金属的成分比例,是为了保障减少焊缝的裂纹。如果使用常见的A102、A132进行焊接,焊缝中无法避免的将会出现马氏体组织,此时肯定会产生裂纹。而使用E309型焊条,母材金属的成分比例要控制造百分之30以内,此时便会得到理想的奥氏体加铁素体双向组织,可以完美的避免焊缝中裂纹的出现。

关键词: 碳钢 不锈钢 焊接 什么 型号 焊条

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