昆钢650轧机辊道转动所使用的12模数重达20公斤的伞齿轮,以及中板轧机辊道转动使用的14模数重达27公斤(连冒口共重50公斤)的伞齿轮,过去都在省外订货,用机床切削加工,其加工量大,占用机床多,成本高。后来省外不生产该种产品。由于生产急需,我们采用熔模精密铸造试制生产。经过两年来的生产实践摸索,大胆试制,闯过了难关,拿出了合格 Kunming Iron and Steel 650 rolling mill used in the 12 modulus of 20 kg bevel gear used in the plate mill rolling roller 14 modulus 27 kg (with risers total weight 50 kg) bevel gear, In the past are ordering outside the province, with machine cutting, the processing volume, take up more machine tools, high cost. Later, the province does not produce such products. Due to the urgent need of production, we use trial investment casting production. After two years of trial production practice, bold trial, passed the storm, come up with qualified