TC4合金的电子束冷床熔炼热平衡计算  

Heat Balance Calculation of Electron Beam Cold Hearth Melting Process of TC4 Alloy

作　　者：张英明[1,2] 周廉[2] 孙军[1] 韩明臣[2] 杨建朝[2] 赵永庆[2] 毛小南[2] 倪沛彤[2] 

机构地区：[1]西安交通大学,陕西西安710049 [2]西北有色金属研究院,陕西西安710016

出　　处：《稀有金属材料与工程》2008年第A04期649-651,共3页Rare Metal Materials and Engineering

基　　金：国家"973"项目2007CB613802的资助

摘　　要：通过对TC4合金电子束冷床熔炼过程热平衡的计算和实验验证,为制定合理的熔炼工艺提供了理论依据。结果表明,对于100kg/h的熔炼速度,维持冷床液态熔池表面125℃过热和结晶坩埚内100℃过热的条件下,熔炼原料的功率为70kW,维持冷床内液态熔池的功率为122kW,维持结晶坩埚良好凝固温度的功率为62kW。在此功率熔炼时冷床内液态熔池表面温度和计算吻合。Instead of the traditional vacuum arc remelting process, electron beam cold hearth melting process as advanced titanium alloy melting technology, is widely used in the titanium melting plant in the world due to its outstanding inclusion removing ability and reducing production cost ability. Through the heat balance calculation of TC4 alloy during the electron beam cold hearth melting process, the research provides the theoretical basis to make the suitable melting recipe. The calculation result shows that, under condition of melting rate of 100 kg/h and the 100 ℃ overheat of the molten TC4 surface in cold hearth and crucible, the power needed to melt the raw material is 70 kW, the power needed to maintain the temperature of molten TC4 in the cold hearth is 120 kW, and the power to maintain the temperature of molten TC4 in crucible is 70 kW. The molten surface temperature at the melting power matches the calculation.

关 键 词：钛合金 TC4 冷床熔炼 热平衡 真空熔炼 

分 类 号：TG27[金属学及工艺—铸造]