A method for predicting the volatilization amount of titanium alloy elements in electron beam cold hearth melting

By using a heat transfer-flow coupled CFD model and Langmuir formula to calculate the volatilization of titanium alloy elements, the shortcomings of existing technologies that rely on trial production and experience are overcome. This enables accurate prediction of the volatilization of titanium alloy elements, reduces costs, and improves production efficiency.

CN122369706APending Publication Date: 2026-07-10西部超导材料科技股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
西部超导材料科技股份有限公司
Filing Date
2026-03-26
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

In existing technologies, the prediction of element volatilization in electron beam cold hearth melting of titanium alloys relies on multiple trial productions and experience, which cannot achieve forward-looking prediction for multiple processes and grades, resulting in high costs and unreliability.

Method used

A heat transfer-flow coupled CFD model is used, combined with a molecular interaction volume model and Langmuir's element volatilization flux formula, to calculate the volatilization of alloying elements. By calculating the relationship between the activity coefficient, saturated vapor pressure and temperature of alloying elements, the volatilization of elements can be quantitatively predicted.

Benefits of technology

It enables accurate prediction of the volatilization of volatile elements, reduces the trial production cost and time cost of raw material ratio design, and improves the efficiency and stability of titanium alloy production.

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Abstract

This invention belongs to the field of titanium and titanium alloy material preparation technology, and relates to a method for predicting the volatilization of elements in titanium alloys smelted by electron beam cold hearth melting. First, a heat transfer-flow coupled CFD model of the electron beam cold hearth melting process is established, and physical property parameters are imported into the model to obtain the temperature field distribution of the alloy melt, as well as the temperature and area of ​​each grid. Then, the activity coefficients and saturated vapor pressures of the alloy elements are calculated. Subsequently, the activity coefficients, saturated vapor pressures, and temperatures of each grid are substituted into the Langmuir element volatilization flux formula to calculate the volatilization flux. Combining the temperature, area, and volatilization flux of each grid, the volatilization amount of the element is calculated. This prediction method does not rely on multiple batch trials and experience accumulation, and can quickly complete predictions for different process parameters and titanium alloy grades, reducing the trial production and time costs of raw material ratio design, and effectively solving the bottlenecks of unreliable volatilization prediction and poor applicability in traditional methods.
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