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在进行发动机大修时,曲轴的修复通常都是把连杆颈轴和主轴颈重磨到一个修理尺寸。如果由于轴瓦转动而使发动机曲轴发生意外的损坏,则可能形成裂纹或很深的机械损伤。此时即使重磨到最后的修理尺寸也不可能消除这些损伤,这样的曲轴一般就不修复了。“汽车柴油机”生产联合企业的专家们已研究出众所周知的修复柴油机曲轴的各种方法,并在国内和国外得到了采用。在使用曲轴修复工艺过程中,一般都是采用直径4毫米的-1型焊条来修补裂纹,
During engine overhauls, the crankshaft is usually repaired by resharpening the neck shaft and the main journal to a repair size. If the crankshaft of the engine is accidentally damaged due to the rotation of the bearing bush, cracks or deep mechanical damage may result. At this point, it is impossible to eliminate these damages even if the final repair size is resharpened, and such a crankshaft is generally not repaired. Experts in the Automotive Diesel Production Syndicate have studied various well-known methods of repairing diesel crankshafts and have adopted them domestically and abroad. In the process of using the crankshaft repair process, generally use the diameter of 4 mm -1 type electrode to repair cracks,