论文部分内容阅读
针对G606风电内齿圈裂纹,对其材料42CrMo钢从化学、金相、扫描电镜等方面进行分析。从表面裂纹及端口形貌、金相组织、微观形貌和化学方面对齿圈裂纹进行检验与分析。通过工艺试验,优化铣齿工艺,改善齿圈淬火前表面质量,增加感应淬火前去应力回火工序,齿圈感应淬火后对其进行检查,表面硬度、金相组织及力学性能均达到要求。通过优化齿圈加工工艺,减少机加工应力,以及控制齿轮感应淬火内应力,保证G606风电内齿圈生产质量。
For the crack of G606 wind gear, the material 42CrMo steel was analyzed from the aspects of chemistry, metallography, SEM and so on. From the surface cracks and port morphology, microstructure, microstructure and chemical aspects of the ring crack test and analysis. Through technological experiments, the tooth milling process is optimized to improve the surface quality of the ring gear before quenching, and the stress-tempering process is added before the induction quenching. After the ring gear is induction hardened, its surface hardness, microstructure and mechanical properties are met. By optimizing the ring gear processing technology to reduce machining stress, as well as control gear induction hardening stress, to ensure G606 wind power ring gear production quality.