钛合金构件真空吸铸成形控制技术的研究

Investigation on Suction Casting Control Technology for Titanium Alloy Parts

反重力铸造技术已广泛应用于铝、镁合金构件的生产。文中结合冷坩埚真空熔炼技术,将反重力真空吸铸技术应用到钛合金成形过程中,研制开发了钛合金真空吸铸控制系统。试验结果表明,该系统运行平稳,能使钛合金液迅速平稳地自下而上填充铸型型腔,避免产生涡流、喷溅和断流,为铸件创造良好的补缩和顺序凝固条件。

Counter-gravity casting method has been. widely used in the production of aluminum and magnesium alloy castings. Based on the cold crucible induction melting technology, this paper introduced the counter-gravity casting technique into the shaping of titanium alloy castings. A kind of suction casting control system for titanium alloys was developed. The experimental results indicate that this system can run reliably, and can make the molten titanium fill the mold from the bottom quickly and smoothly. Molten swirl, splash and flow-interrupt are avoided, a good condition for the feedinq and the sequential solidification are provided.