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铸铁的焊接工艺有那些
更新时间: 2020-09-21 00:00:00  

铸铁件的焊接工艺一般分为热焊、半热焊、冷焊三种工艺,不同的焊接工艺选用的焊接材料各不相同。铸铁热焊工艺是将铸铁件整体或局部预热至600至700度,并在焊接过程中保持温度,焊后趁红热状态覆盖石棉粉或其他保温材料,缓慢冷却,有利于石墨析出。热焊方法的优点是降低焊缝与母材的温差,从而降低焊接接头应力水平,有利于防止裂纹产生,避免产生白口及淬硬组织。

关键词: 铸铁 焊接 工艺 那些

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