摘要
研究了半固态流变压铸成形技术,设计并制造出不同内浇道尺寸的锁扣半固态压铸模,利用模拟软件对半固态流变压铸充型及凝固过程进行了数值模拟,并进行了试验验证。结果表明,模具温度对半固态压铸影响较大,应保持在250~300℃。压铸模内浇道尺寸也有重要影响,较大内浇道面积(17mm2)的铸件硬度优于较小内浇道面积(11mm2)的铸件硬度。试验得到的最优半固态压铸工艺参数,压射速度为1m/s,模具预热温度为240℃,浆料温度为590℃。
The die-casting technology of semi-solid rheological was developed.And the semi-solid die casting die for locking with different dimensions of ingates was designed.The filling and solidification process of semi-solid theological die-casting was simulated by using Flow-3D software,and practical production was conducted to verify the simulated result.The result shows that during semi-solid rheological die-casting,the temperature of mold has greatly effects on die-casting,where the temperature of 250-300℃is a acceptable selection.Meanwhile,ingate dimension of die-casting mold is closely related to the quality of semi-solid die-casting product.The mechanical properties of the semi-solid rheological forming parts in condition of a larger ingate area are superior to those of one in a smaller ingate area.The optimized processing parameters are as follows:injection velocity of 1 m/s,mould pre-heating temperature of 240℃and semi-solid slurry temperature of 590℃.
作者
黄勇
姚国海
王淼
刘凤国
Huang yong;Yao Guohai;Wang Miao;Liu Fengguo(School of Material and Engineering,Shenyang Ligong University)
出处
《特种铸造及有色合金》
CAS
CSCD
北大核心
2013年第5期433-435,共3页
Special Casting & Nonferrous Alloys
关键词
半固态
铝合金
数值模拟
Semi-Solid
Aluminum Alloy
Numerical Simulation
