Simulation Study of Electron Beam Process Parameters on EB Furnace Melting Raw Materials

Abstract

In the process of melting titanium alloys in electron beam cold hearth melting furnace, the process parameters of electron beam are crucial to the melting rate of titanium alloys. In view of the influence of electron beam process parameters on the melting rate, the finite element method was used to calculate and analyze the melting process of titanium alloy in EB furnace in detail, and the change of raw material temperature field under different process parameters of electron beam was studied. The results show that increasing the scanning speed of the electron beam significantly reduces the melting depth and width. Increasing the diameter of the electron beam deepens and widens the melting depth. Widening the scan spacing can slightly reduce the melting depth, but significantly broaden the melting width. The accelerating voltage and the current emitted by the electron beam have a limited effect on the melting due to their thermal saturation effect. Furthermore, this study provides theoretical support for the optimization of electron beam process parameters for electron beam cold hearth melting of titanium alloys, and the optimization strategy needs to be combined with parameter adjustments to improve the efficiency of single melting and reduce the number of scans.