高均质钛合金铸锭的制备技术及评价方法  

Preparation Technology and Evaluation Method of High Homogeneous Titanium Alloy Ingots

作　　者：韩云飞 麻毅 乔海滨 孙冰 袁兵兵 杨峰 HAN Yunfei;MA Yi;QIAO Haibin;SUN Bing;YUAN Bingbing;YANG Feng(Luoyang Sunrui Titanium Precision Casting Co.,Ltd.,Luoyang 471000,Henan China;Luoyang Ship MaterialResearch Institute,Luoyang 471000,Henan China)

机构地区：[1]洛阳双瑞精铸钛业有限公司,河南洛阳471000 [2]中国船舶集团有限公司第七二五研究所,河南洛阳471000

出　　处：《铸造工程》2024年第4期8-12,共5页Foundry Engineering

基　　金：中国船舶集团有限公司第七二五研究所研发基金项目(3723025001)。

摘　　要：基于真空自耗电极电弧熔炼技术(VAR)制备二次熔炼钛合金铸锭。使用高级别原材料,调整合金配方,精确称量,控制主化学元素Al、Zr、Mo及V的成分波动,混料均匀,避免异物污染,总结电流、电压和真空度等熔炼经验参数,优化操作方法,经二次熔炼得到4批4根钛合金铸锭。从每根铸锭上、下部端面的中心、1/2R和边缘各取1份试样,从中部边缘取2份试样,总计32份,检测化学成分,初步判断成分较均匀。利用统计方法量化成分均匀性及一致性,为保证数据分析的准确性,使用Minitab软件计算铸锭主化学元素Al、Zr、Mo及V的过程能力指数(Cp、Cpk),Cp及Cpk值均大于1.0,说明过程能力较强,控制水平较高,成分均匀性及一致性高。Secondary melting of titanium alloy ingots was conducted using the vacuum consumable electrode arc melting(VAR)technique.High-grade raw materials were employed,with precise adjustments to the alloy formula and accurate weighing,to manage the compositional fluctuations of the key chemical elements Al,Zr,Mo,and V.The mixture was thoroughly blended to prevent contamination from foreign matter.Key smelting parameters including current,voltage,and vacuum levels were documented,and operational methods were optimized.This process yielded four batches of four titanium alloy ingots.Samples were collected from the center,1/2R,and edges of both the upper and lower end faces of each ingot,as well as two samples from the central edge,totaling 32 samples.Chemical composition analysis was conducted,suggesting that the composition is initially judged to be uniformly distributed.Statistical methods were utilized to quantify the uniformity and consistency of the composition.To ensure accurate data analysis,the process capability indices(Cp and Cpk)for the main chemical elements Al,Zr,Mo,and V of the ingots were calculated using Minitab software.Both Cp and Cpk values exceed 1.0,signifying strong process capability,high level of control,and high uniformity and consistency of the composition.

关 键 词：钛合金铸锭 真空自耗电极电弧熔炼 成分均匀性 Minitab软件 过程能力指数 

分 类 号：TG292[金属学及工艺—铸造]