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曲轴修复的迫切性以及长期运行后内燃机车柴油机的使用寿命问题是众所周知的。对于铁路修理机械联合体所属各内燃机车修理工厂来说，在它们完成交通部延长使用寿命及国产化计划时，这个问题显得特别尖锐。在许多工厂，由于修复工艺的复杂性和修复费用的昂贵，因而对损坏的曲轴至今还不予修复。曲轴修复的主要类别有：消除跳动的修正；通过磨削消除椭圆度和局部机械损伤（如擦伤伤痕），以修复曲轴的主轴顿和连杆轴颈；用涂覆涂层的方法，修复磨损大的轴颈的直径；焊补裂纹；消除曲轴在长时间工作过程中所产生的残余应力。本文将详细介绍铁路修理机械联合体所属工厂所积累的修复曲轴的经验。
The urgency of crankshaft repair and the long service life of diesel locomotive diesel engines are well known. This problem is particularly acute for diesel locomotive repair shops owned by the Railway Repair Machinery Complex as they complete the Department of Transportation’s extended service life and localization program. In many plants, the damaged crankshaft has not yet been repaired due to the complexity of the repair process and the cost of repairing it. The main categories of crankshaft repair are: elimination of beating correction; elimination of ovality and local mechanical damage (such as scratches) by grinding to repair the crankshaft’s mainton and connecting rod journals; and coating by coating Wear and tear large journal diameter; weld crack; eliminate the crankshaft in the long working process of residual stress. This article details the experience of repairing a crankshaft that has been accumulated at the factory owned by the Railway Repair Machinery Complex.