QT800-5轻量化平衡轴支架的开发

Development of QT800-5 Lightweight Balance Shaft Bracket

介绍了轻量化平衡轴支架的开发过程:(1)通过对产品结构进行优化设计,利用CAE软件模拟铸件的受力情况,将原结构的平衡轴支架和锻钢轴合二为一,组合为1个新铸件;(2)通过熔炼工艺的优化,成功开发了应用砂型铸造工艺生产性能较高的QT800-5新材料,替代了QT500-7;(3)观察铸件的宏观断口和利用CAE软件模拟受力情况,通过消除缩松缺陷、改善加工质量及增加过渡圆角,使平衡轴支架顺利通过台架试验和整车耐久试验,成功地实现了总成产品降重30%的目标。

The development process of lightweight balance shaft bracket was introduced:(1)By optimizing the product structure and using CAE software to simulate the force of the casting,the balance shaft bracket and the forged steel shaft of the original structure were combined into one.The combination was a new casting.(2)Through the optimization of the smelting process,the QT800-5 new material with high production performance of sand casting process had been successfully developed,replacing QT500-7.(3)By observing the macro fracture and using CAE software simulated the stress situation,eliminating the shrinkage defects,improving the processing quality and increasing the transition fillet,the balance shaft bracket passed the bench test and the vehicle durability test.And successfully achieved the target of 30%weight reduction of the assembly product.