Physical Simulation of Mold-Filling Processing of Thin-Walled Castings under Traveling Magnetic Field

材料科学技术（英文）, 2004, 20(1): 27-30.

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1.School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China

2.School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China;Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China

3.School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China

4.School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China

5.School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China

6.School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China

7.School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China

基金项目: 国家重点基础研究发展计划(973计划)(G2000067202-2)

Physical Simulation of Mold-Filling Processing of Thin-Walled Castings under Traveling Magnetic Field

Keywords： Traveling magnetic field

Mold-filling process of thin-walled castings under the condition of traveling magnetic field has been studied by physical simulation method using gallium melt and fast speed photography. Flow morphology and its formation mechanism were obtained and discussed for thin-walled casting. The influences of magnetic field density on the filling ability,filling velocity and mold filling time have been studied. The differences in filling capability between gravity casting and casting under the traveling magnetic field have been compared. The results indicate that the mold filling ability of the gallium melt increases greatly under the condition of traveling magnetic field; the filling time is shortened from 18 s under gravity field to 3 s under the traveling magnetic field and average flow rate of the melt increases from 1.6to 8.68 cm3/s; the change law of the cross-section morphology of the gallium melt during the mold filling is that at first, the cross-section area does not change, then it decreases gradually. When the front of the melt reaches the end of the mold cavity, the front melt will backfill the mold; the wider the width of mold cavity, the better the mold filling ability. The mold filling ability of gallium melt in mold with upper magnetic conductor is better than that without upper magnetic conductor.

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Physical Simulation of Mold-Filling Processing of Thin-Walled Castings under Traveling Magnetic Field

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