齿冠镶铸高铬铸铁

Cast-in High Chromium Cast Iron Gear Crown

为了提高齿冠耐磨寿命,在该铸件工作部位采用镶铸的方法,局部性地用高铬铸铁取代原材质,而改善其使用性能。本文从高铬铸铁的熔炼和铸造工艺两方面探讨了齿冠的镶铸工艺,指出控制高铬铸铁的含C量上限,并配合适当工艺,可得到最大限度的铸态硬度,并对现行工艺提出了改进意见。

The cast-in technique is used to the manufactwing of gear crown in order to extend its service life. The contacting-face of the gear casting is replaced by high chromiam cast iron therefore the performance of gear is improved. The article approaches the casting-in technology process of gear crown from both the melting and the casting technology of high chromiun cast iron, and points out that the maximum as-casting hardness will be achieved by controlling the carbon content of high chromium cast iron at upper limit and the proper casting process design.