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针对内燃机车16V280ZJ型柴油机连杆的微动损伤,在失效分析和接触力学分析的基础上,进行了表面工程技术可行性方案的比较,确定了固体润滑涂层的表面处理方案。研究采用了极图法,对粘接MoS2、粘接石墨、粘接PTFE和电刷镀Pb/Ni等4种涂层的性能和微动特性进行了定量比较,结果表明,粘接MoS2涂层具有最佳的抗微动损伤特性。实际应用表明,经表面工程设计选择的涂层显著提高了连杆部件的使用寿命。
Aimed at the fretting damage of 16V280ZJ diesel engine connecting rod of diesel locomotive, the feasibility of surface engineering technology was compared on the basis of failure analysis and contact mechanics analysis, and the surface treatment scheme of solid lubricating coating was determined. The pole figure method was used to quantitatively compare the performance and the fretting characteristics of four kinds of coatings, MoS2, bonded graphite, bonded PTFE and Pb-Ni-plated brush. The results showed that the adhesion of MoS2 coating Has the best anti-fretting characteristics. Practical applications show that the choice of surface engineering design coating significantly improve the life of the connecting rod components.