双金属复合管件浇铸缺陷控制研究  

Control of Casting Defects of Bimetal Composited Pipe Fittings

作　　者：杨宏博[1,2] 李京社[1,2] 杨树峰[1,2] 于满[1,2] 高向宙[1,2] 

机构地区：[1]北京科技大学钢铁冶金新技术国家重点实验室,北京100083 [2]北京科技大学冶金与生态工程学院,北京100083

出　　处：《铸造技术》2014年第1期86-89,共4页Foundry Technology

基　　金：国家自然科学基金资助项目(51304016)

摘　　要：采用熔模铸造法对双金属复合弯管的制造过程进行了工业试验,发现在内层金属管底部出现了浇不足缺陷。利用ProCAST软件建立了合理的双金属复合弯管熔模铸造过程数值模拟计算模型,基于该模型研究浇注压头和浇注系统变化对浇不足缺陷的影响规律,最终发现双金属弯管熔模铸造的最佳浇注压头为180 mm,并提出了一个可以完全消除浇不足缺陷的合理浇注系统。An industrial test about manufacturing process of bimetal composited pipe by the method of investment casting was carried out. The defect of misrun was found at the bottom of the pipe. A reasonable numerical model about the inveslment casting process of bimetal composited pipe was built by ProCAST to study the influences of pouring pressure head and pouring system on the misrun defect. Based on the simulation study, it is found that the best pouring pressure head was 180 mm, and a reasonable pouring system which could eliminate misrun defect was proposed.

关 键 词：双金属复合管 熔模铸造 缺陷 数值模拟 

分 类 号：TG245[金属学及工艺—铸造]