New method of direct chill casting of Al-6Si-3Cu-Mg semisolid billet by annulus electromagnetic stirring
The electromagnetic direct chill (EMDC) casting process is a well-established production route for aluminum alloy ingot,however,the skin effect restricts the casting diameter.In order to avoid this problem,annulus electromagnetic direct chill (A-EMDC) casting process has been developed.A three-dimension finite element computational model of A-EMDC casting process was established by using ANSYS Magnetic-Nodal programs and FLOTRAN CFD programs.Microstructures of A-EMDC casting semi-solid Al-6Si-3Cu-Mg alloy billets were investigated.Two pairs of vortexes occur within the crystallizer with opposite direction in A-EMDC.The annulus gap is advantageous to increasing circulate flow,reducing the temperature gradient as well as shallowing liquid sump depth.The microstructure obtained by A-EMDC is globular or rosette-like,and the microstructure is homogeneous in the billet.
electromagnetic stirring semi-solid continuous casting Al-6Si-3Cu-Mg alloy
TANG Meng-ou XU Jun ZHANG Zhi-feng BAI Yue-long
General Research Institute for Nonferrous Metals, Beijing 100088, China
国际会议
北京
英文
1591-1596
2010-09-16（万方平台首次上网日期，不代表论文的发表时间）