电子束冷床炉制备TC4钛合金铸锭

Preparation of TC4 Titanium Alloy Ingot by Electron Beam Cold Bed Furnace

摘要: 采用Langmuir定律对电子束冷床炉一次熔炼制备TC4合金铸锭的工业化过程进行研究，探讨了熔炼工艺参数对铸锭化学成分的影响规律，并对熔炼过程中Al元素的挥发行为进行分析。研究结果表明：在电子束冷床熔炼过程中，Al元素出现显著挥发，实际挥发率达到20%至23%，明显高于理论预测值12.9%；通过优化工艺参数，所制备的铸锭整体化学成分均匀性良好，其中单个铸锭Al元素最大偏差 ≤ 0.17，V元素 ≤ 0.09，其化学成分完全符合国家标准要求。

Abstract: The industrial process of preparing TC4 alloy ingots by one-time melting in an electron beam cold hearth furnace was studied using the Langmuir law. The influence of melting process parameters on the chemical composition of the ingots was explored, and the volatilization behavior of Al element during the melting process was analyzed. The research results show that during the electron beam cold hearth melting process, Al element volatilizes significantly, with an actual volatilization rate of 20% to 23%, which is much higher than the theoretical predicted value of 12.9%. By optimizing the process parameters, the overall chemical composition uniformity of the prepared ingots is good, with the maximum deviation of Al element in a single ingot ≤ 0.17 and V element ≤ 0.09, and its chemical composition fully meets the national standard requirements.