一种电子束冷床炉熔铸清边封顶补缩方法
By adjusting the scanning current and power of the electron beam cold hearth furnace, the problem of shrinkage at the tail of the ingot during electron beam cold hearth furnace melting was solved, thereby improving the ingot yield and reducing costs.
CN117737446BActive Publication Date: 2026-07-17PANGANG GRP PANZHIHUA STEEL & VANADIUM
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- PANGANG GRP PANZHIHUA STEEL & VANADIUM
- Filing Date
- 2023-12-21
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
During electron beam cold hearth furnace smelting, shrinkage cavities are easily generated in the crystallizer at the tail of the ingot, which leads to a decrease in the yield of cast ingots.
Method used
The electron beam cold hearth furnace melting and casting method for edge clearing, sealing and feeding is adopted. By adjusting the scanning current and power of the electron gun, the temperature and volume of the molten metal pool are gradually reduced to avoid the formation of shrinkage cavities and ensure that inclusions float to the surface.
Benefits of technology
This effectively reduces the amount of ingot cutting, increases the yield of titanium ingots, and lowers production costs.
✦ Generated by Eureka AI based on patent content.
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Figure CN117737446B_ABST
Abstract
本发明公开了一种电子束冷床炉熔铸清边封顶补缩方法，属于钛冶炼技术领域。该方法包括：加料完成后停止进料；使用负责冷床初炼区的两个电子枪对冷床初炼区吸附的挥发物进行清理；使用负责冷床精炼区的电子枪对冷床精炼区吸附的挥发物进行清理；关闭负责冷床初炼区和冷床精炼区的电子枪，使用负责结晶区的电子枪对结晶器四周吸附的挥发物进行清理；进入封顶补缩阶段，在封顶补缩阶段，负责结晶区的电子枪的扫描图形保持不变，扫描电流按照平均1min降0.25A的方式减小；封顶补缩完成后，关闭负责结晶区的电子枪，进入冷却阶段。该方法保证了钛锭内部的夹杂物能够上浮以及缩孔体积减小。有效减少了铸锭的切头量，提高钛锭成材率。
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