一种医用钛合金铸件熔模铸造工艺设计  

Process Design of Investment Casting of a Medical Titanium Alloy Casting

作　　者：程亚珍 柴自毫 李渤渤 杜延乐 CHENG Ya-zhen;CHAI Zi-hao;LI Bo-bo;DU Yan-le(Luoyang shuangrui precision casting titanium Co.,Ltd.,Luoyang 471023,Henan,China)

机构地区：[1]洛阳双瑞精铸钛业有限公司,河南洛阳471023

出　　处：《铸造》2022年第3期362-366,共5页Foundry

基　　金：国家重点研发计划项目(2020YFB2008300、2020YFB2008301)

摘　　要：一种医用钛合金铸件采用ZTC4钛合金,由熔模铸造工艺生产。通过对浇注系统进行模拟分析,确定适用于生产该医用钛合金铸件的浇注系统。面层采用1#粘结剂制壳工艺、加固层硅溶胶制壳工艺,采用蒸汽脱蜡及合适的焙烧工艺、离心浇注工艺获得医用钛合金铸件,铸件经过修整、热等静压等工序获得了内部及外观质量好、尺寸精度高的钛合金铸件,批量试制产品的一次合格率达到97.6%,表明该熔模铸造工艺方法适合生产结构相似的医用钛合金铸件。A medical titanium alloy casting was made of ZTC4 titanium alloy and produced by investment casting process.Through simulation analysis of the gating system,the suitable pouring system for the production of the medical titanium alloy casting was determined.Surface shell adopted 1#binder shell making process,reinforced shell was silica sol making process,and steam dew axing and appropriate roasting process,centrifugal casting process were used,followed by HIP,dressing process to obtain titanium alloy castings with good internal and external quality and high dimensional accuracy.The first pass rate of batch trial products was 97.6%,indicating that the investment casting technology is suitable for the medical titanium alloy casting with similar structure.

关 键 词：医用钛合金铸件 熔模铸造 浇注系统 制壳工艺 离心浇注 

分 类 号：TG249.5[机械工程—精密仪器及机械]