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190型柴油机是在我国普遍应用的柴油机之一,其机体大部采用铸铁材料制造,而铸铁材料在长期使用之下并容易发生裂纹扩展,如果因裂纹而频繁更换部件经济价值过高,不更换则裂纹的扩展会严重影响设备的安全使用,进行焊补则因铸铁焊接性差,受热不均匀裂纹容易扩展等问题影响焊接质量并给机体造成损害。本文针对灰铸件机体裂纹在冷焊方法下的
190 diesel engine is one of the commonly used diesel engines in our country. Most of its body is made of cast iron material, while the cast iron material is prone to crack propagation under long-term use. If the frequent replacement of parts due to cracks is too high economic value, it will not be replaced The crack growth will seriously affect the safe use of equipment, welding repair due to poor welding of cast iron, uneven heating cracks easily expand and other issues affect the welding quality and damage to the body. In this paper, gray castings body cracks in the cold welding method