發(fā)布時(shí)間：2018-11-25 19:38

【摘要】：針對(duì)使用常規(guī)鑄造工藝制造的新能源汽車電機(jī)殼出現(xiàn)縮松縮孔、氣密性合格率低的問(wèn)題,應(yīng)用數(shù)值模擬技術(shù)對(duì)電機(jī)殼的擠壓鑄造工藝進(jìn)行研究。通過(guò)對(duì)鑄造充型、凝固過(guò)程進(jìn)行模擬仿真,驗(yàn)證工藝設(shè)計(jì)的合理性,并結(jié)合單一變量法研究澆注溫度、模具溫度、比壓等工藝參數(shù)對(duì)縮松縮孔的影響。最終確定最佳工藝參數(shù)為澆注溫度680℃,模具溫度280℃,比壓110 MPa、壓射速度0.1 m/s、保壓30 s。在此參數(shù)下結(jié)合局部加壓裝置可以消除鑄件的縮松縮孔,得到的鑄件性能優(yōu)良,氣密性合格率達(dá)到88%。
[Abstract]:In order to solve the problem of shrinkage hole and low qualified rate of air tightness in the new energy motor shell manufactured by conventional casting technology, the squeeze casting process of motor shell was studied by numerical simulation technology. Through the simulation of casting filling and solidification process, the rationality of the process design is verified, and the effects of pouring temperature, mold temperature and specific pressure on shrinkage are studied with a single variable method. The optimum technological parameters are as follows: pouring temperature 680 鈩，

本文編號(hào)：2357182