中小型铝合金铸件半固态流变压铸技术研究  

Semisolid Rheological Die Casting Technology for Small and MediumSized Aluminum Alloy Castings

作　　者：龙文元[1] 龚杰 宋国金 LONG Wen-yuan;GONG Jie;SONG Guo-jin(School of Aeronautical Manufacturing Engineering,Nanchang Hangkong University,Nanchang 330063,Jiangxi,China;Xiamen Gnaire Technology Co.,Ltd.,Xiamen 361028,Fujian,China)

机构地区：[1]南昌航空大学航空制造工程学院,江西南昌330063 [2]厦门格耐尔科技有限公司,福建厦门361028

出　　处：《铸造》2021年第6期651-656,共6页Foundry

摘　　要：基于智铸超云—压铸领域专业CAE云平台,采用扣手铝合金铸件为研究对象,模拟分析了压射工艺参数对半固态流变压铸充型过程的影响,优选出了一种最佳的匀加速料筒孕育半固态流变压铸工艺方案进行实际产品的生产试验。结果表明:采用五段低速射出模式B压铸工艺方案,可使合金液在压室中流动平稳,呈层流状态,没有出现紊流;根据模拟结果优化了料筒孕育半固态流变压铸工艺,成功实现了扣手铸件的半固态流变压铸成形,得到了合格的压铸件,组织中初生α-Al相主要呈近球状或颗粒状,内部无气孔缺陷,可进行T6处理和焊接加工。Based on the professional CAE cloud platform in the field of die casting,the influence of injection process parameters on the filling process of semi-solid rheo-diecasting buttons was studied by using computer numerical simulation.The simulation results show that the flow of the alloy liquid in the chamber is steady,laminar and without turbulence by adopting the five stage low-speed injection mode B.According to the simulation results,the semi-solid rheo-diecasting process with uniform acceleration barrel inoculation was optimized,and the semi-solid rheo-diecasting of button castings was successfully realized.The qualified die castings were obtained and no porosity defects were observed.The primaryα-Al phase in the microstructure of the button semi-solid die casting is mainly spherical or granular.The die cast buttons can be processed by T6 treatment and welding.

关 键 词：半固态浆料 流变压铸 云计算 工艺优化 

分 类 号：TG244[金属学及工艺—铸造]