铸造工程
鑄造工程
주조공정
FOUNDRY ENGINEERING
2012年
1期
26-28,32
,共4页
残余应力%振动时效%退火
殘餘應力%振動時效%退火
잔여응력%진동시효%퇴화
residual stress%vibration stress relief%annealing
铸造残余应力的存在使铸件在使用过程中寿命缩短。为找到一种有效的工艺方法降低铸件的残余应力，试验验证了振动时效和退火工艺对气缸体、气缸盖残余应力和尺寸稳定性的影响，通过优化退火工艺进一步探索能有效消除气缸盖铸造残余应力的工艺方法。结果表明，振动时效工艺适合气缸体等简单铸件的处理，对于气缸盖等复杂结构铸件则建议采用退火工艺。
鑄造殘餘應力的存在使鑄件在使用過程中壽命縮短。為找到一種有效的工藝方法降低鑄件的殘餘應力，試驗驗證瞭振動時效和退火工藝對氣缸體、氣缸蓋殘餘應力和呎吋穩定性的影響，通過優化退火工藝進一步探索能有效消除氣缸蓋鑄造殘餘應力的工藝方法。結果錶明，振動時效工藝適閤氣缸體等簡單鑄件的處理，對于氣缸蓋等複雜結構鑄件則建議採用退火工藝。
주조잔여응력적존재사주건재사용과정중수명축단。위조도일충유효적공예방법강저주건적잔여응력，시험험증료진동시효화퇴화공예대기항체、기항개잔여응력화척촌은정성적영향，통과우화퇴화공예진일보탐색능유효소제기항개주조잔여응력적공예방법。결과표명，진동시효공예괄합기항체등간단주건적처리，대우기항개등복잡결구주건칙건의채용퇴화공예。
The life of casting is shortened by foundry residual stress. To find a method which can reduce the residual stress effectively, the effects of vibration stress relief and annealing on the residual stress and dimension stability of cylinder head and cylinder block were tested and compared, then the way of eliminating the residual stress through optimizing the annealing was researched. As the result, vibration stress relief is effective to simple castings, but it is better to adopt annealing for baroque castings, such as cylinder head.
