Zhao J.,Chongqing University |
Fu L.,Chongqing University |
Wang Z.,Ningxia KOCEL Machinery Co. |
Chen Y.,Zunyi Tuote Special Casting and Forging Co.
Tezhong Zhuzao Ji Youse Hejin/Special Casting and Nonferrous Alloys | Year: 2014
Effects of vacuum degree and filling temperature on the casting length of A356 aluminum alloy wire prepared by vacuum suction casting were investigated. The results show that absolute vacuum is directly responsible for the length of A356 aluminum alloy wire. With a given filling temperature, the length of A356 aluminum alloy wire is increased with the decrease of the absolute vacuum. And then, the absolute vacuum is decreased to a certain degree, the increase of the length of the wire is slown down. At a fixed absolute vacuum, the length of the A356 aluminum alloy wire is increased with the increase of the filling temperature. The appropriate parameters were presented as follows: absolute vacuum of 0.034~0.047 MPa and the filling temperature of 993~1023 K. Based on Bernoulli equation and principle of heat transfer, theoretical formula for the length of the wire was derived. The length of the wire with the initial filling temperature exhibits logarithmic relation. ©, 2014, Journal Office of Special Casting and Nonferrous Alloys. All right reserved.