VAR熔炼纯锆铸锭表面质量控制研究  

Research on Surface Quality Control of Pure Zirconium Ingot Melted by VAR

作　　者：杨健 曹江海 侯秦龙 秦羽满 闫昭 李维 Yang Jian;Cao Jianghai;Hou Qinlong;Qin Yuman;Yan Zhao;Li Wei(Western Titanium Technologies Co.,Ltd.,Xi’an 710201,China;Western Metal Materials Co.,Ltd.,Xi’an 710201,China)

机构地区：[1]西部钛业有限责任公司,陕西西安710201 [2]西部金属材料股份有限公司,陕西西安710201

出　　处：《钛工业进展》2023年第3期33-38,共6页Titanium Industry Progress

基　　金：秦创原引用高层次创新创业人才项目(QCYRCXM-2022-179)。

摘　　要：以实际生产中遇到的纯锆铸锭表面夹层、结疤及冷隔缺陷为出发点,通过数值模拟和工业生产实验相结合的研究方法,确定了较佳的纯锆铸锭真空自耗电弧熔炼(VAR)工艺,明显改善了铸锭的表面质量。研究发现:各熔炼参数主要通过影响熔池形状和坩埚壁附近的熔体温度对铸锭表面质量产生影响;增大熔炼电流可以同时改善熔池到边情况和增加坩埚壁附近熔体的温度;增大稳弧电流和稳弧周期可以促进高温熔体向坩埚壁的运动,使熔池更加饱满,从而提高纯锆铸锭的表面质量。Based on the defects of surface lamination,scarring and cold separation of pure zirconium ingots encountered in actual production,the optimal vacuum arc remelting(VAR)process of pure zirconium ingot was determined by combining numerical simulation and industrial production experiments,which significantly improved the surface quality of ingots.It is found that the melting parameters mainly affect the surface quality of ingot by influencing the shape of melting pool and melt temperature near the crucible wall;the increase of melting current can improve the situation of molten pool to the edge and increase the temperature of melt near the crucible wall;the increase of coil’s current and period can promote the movement of high-temperature melt to the crucible wall,making the molten pool fuller,thereby improving the surface quality of the pure zirconium ingot.

关 键 词：表面质量 真空自耗电弧熔炼 数值模拟 纯锆铸锭 

分 类 号：TG146.414[一般工业技术—材料科学与工程]