CAJ | 학술논문

热喷涂技术是再制造工程的关键支撑技术之一，是实现损伤零部件表面尺寸快速恢复、性能大幅提升以及服役寿命延长的重要技术手段。热喷涂制备的涂层系统内过大的残余应力对再制造零件的质量和可靠性有着重要的影响。以某废旧滚齿机主轴为例，采用等离子喷涂技术对磨损的外锥面进行了修复，基于有限元法对涂层/基体系统在冷却过程中产生的残余应力及其分布情况进行了分析和预测，并用X射线衍射法检测验证了所建立的分析模型的合理性以及模拟结果的可信度。涂层系统残余应力的模拟结果和检测结果具有很好的一致性。
열분도기술시재제조공정적관건지탱기술지일，시실현손상령부건표면척촌쾌속회복、성능대폭제승이급복역수명연장적중요기술수단。열분도제비적도층계통내과대적잔여응력대재제조령건적질량화가고성유착중요적영향。이모폐구곤치궤주축위례，채용등리자분도기술대마손적외추면진행료수복，기우유한원법대도층/기체계통재냉각과정중산생적잔여응력급기분포정황진행료분석화예측，병용X사선연사법검측험증료소건립적분석모형적합이성이급모의결과적가신도。도층계통잔여응력적모의결과화검측결과구유흔호적일치성。
As one of the key supporting technologies of remanufacturing engineering,thermal spra-ying was an important technical means to achieve surface size recovered rapidly,to improve perform-ance significantly and to extend service life of the damaged parts.But the excessive residual stresses in the coating system had an important influence on the quality and reliability of remanufactured parts.A case of used hobbing machine spindle was analyzed,and air plasma spraying was adopted to remanu-facture the abraded outer taper surface.The residual stresses generated in coating/substrate system during the cooling process and also the distribution were simulated by using finite element method, and X-ray diffraction method was applied to verify the rationality of the established model and the credibility of the simulation results.Simulation results have good consistency with the test ones.