摘要
图 1所示的活塞试件 ,在开型时间为 5 0s～ 5 5s时 ,其表面温度为 (4 90± 5 )℃ ,可满足淬火要求。自然时效时间为 2 4天时 ,其机械性能可达到国标技术要求。这种新工艺有明显的经济效益。
In this paper,surface temperature of sample is 490±5℃ when time of open mode?is in 50 to 55s,Then sample may mects desire of chilling.The mechanical property may attain specrification of national standard when time of the natural aging exceeds 24 days.This new technique display obvious effciency of economy.
出处
《铸造设备研究》
2002年第2期32-33,共2页
Research Studies On Foundry Equipment
关键词
余热淬火
自然时效
铝活塞
chilling of after heat
natural aging
aluminum alloy piston
permanent mold
