推压齿轮粘砂缺陷的分析与防止

Dissection and Prevention of Burn—on Defect on Driing Gear

本文分析了ЗКТ—4挖掘机推压齿轮铸齿粘砂缺陷后,采取了改进工艺。提高原砂质量等措施,彻底消除了缺陷,铸造一次合格率由9.38％提高到99％以上,效果明显。

This paper has analysed the burn—on defect accurred in the as—cast teeth of OKT—4 excavator driving gear.In practice.author improved the casting techniques and replaced the sand,so that the defects were eliminated and the casting percent of pass was increased from 9.38％to over 99％.It is evident that the new process has great economic effect.