日前,中国第二重型机械集团公司(中国二重)顺利完江苏联峰能源80万t大棒开坯机项目中下齿轮轴渗碳火工序。据了解,该轴为中国二重迄今为止直径最大的渗碳淬齿轮轴。由于该件齿轮轴长度达到3 911 mm,已接近该司井式渗碳炉尺寸,用常规方法淬火不行。对此,在技术备时,中国二重工艺员设计了专用起吊吊耳,以保证淬起吊安全。 Recently, China Second Heavy Machinery Group Corporation (China Second Heavy) successfully completed the Jiangsu Lianfeng Energy 800,000 t big rod Biller project middle and lower gear carburizing fire process. It is understood that the shaft is China’s second largest carburizing hardened axle so far. As the gear shaft length reaches 3 911 mm, has been close to the shaft type carburizing furnace size, the conventional method of quenching not work. In this regard, the technical preparation, China’s dual technicians designed lifting lugs to ensure the safety of quenching the crane.