灰铸铁电弧冷焊时焊材对加工性能的影响
Effect of Welding Mateial on Mechanical Working Properity of Gay Cast-iron by Cold Arc Welding
李日娟
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作者单位：自贡市特种设备监督检验所， 四川 自贡 643200
中文关键字：灰铸铁； 电弧冷焊； 焊材； 加工性能
英文关键字：gay cast-iron; cold arc welding; welding material; mechanical working property
中文摘要：采用Z208、Z248、Z308、Z116四种焊条对灰铸铁进行电弧冷焊试验，对比了焊缝组织、半熔化区白口硬度及宽度，并从焊接冶金角度作出分析。结果表明：Z208、Z248所焊焊缝同母材一样为灰铸铁，Z208因白口宽度大不能进行后续机加工；Z308、Z116所焊焊缝与母材异质，Z308几乎无白口，具有优良的加工性能。
英文摘要：The welding tests on Gay cast-iron were made with four kinds of electrode by cold arc welding(Z208 Z248 Z308 Z116), metallographic microstructure, the width and microhardness of the partial fusion were compared in welding metallurgy. The results show that the welded joint by Z208 and Z248 is same with base metal, the welded joint by Z208 are not matched; the welded joint by Z308 and Z116 is not same with the base metal, but the machining property is better.