钛合金离心泵泵体铸造工艺设计及优化  

Design and Optimization of Casting Process for Titanium Alloy Centrifugal Pump Casing

作　　者：翟宇龙 陈战考 程佳 谢霄 殷莹 孙博 ZHAI Yu-long;CHEN Zhan-kao;CHENG Jia;XIE Xiao;YIN Ying;SUN Bo(Xi'an Pump Valve General Factory Co.,Ltd.,Xi'an Shaanxi 710032,China)

机构地区：[1]西安泵阀总厂有限公司,陕西西安710032

出　　处：《铸造设备与工艺》2023年第6期14-18,共5页Foundry Equipment & Technology

摘　　要：针对钛合金离心泵泵体铸造过程中存在的气缩孔缺陷问题展开研究。对原有铸造工艺进行优化设计,包括优化泵体结构、调整浇注位置、优化冒口设计等;然后,采用熔模精密铸造与石墨型两种铸造工艺对优化后的工艺进行验证。验证结果表明:优化工艺后铸件中气缩孔缺陷得到有效控制,同时可以保证整个铸造过程的稳定性和可控性。This article focuses on the problem of gas shrinkage defects in the casting process of titanium alloy centrifugal pump body.By adopting investment casting and graphite casting processes,the original casting process is optimized and designed,including adjusting the pouring position,riser design,and pump body structure optimization.After process optimization,the gas shrinkage defects in the castings are effectively controlled,while ensuring the stability and controllability of the entire casting process.The use of side pouring and reducing liquid reflux measures for centrifugal pump body castings is an effective way to improve the internal quality of castings.It can increase the first pass rate of castings to at least 90%,significantly improving the overall surface quality of castings.However,the shell precision casting method requires strict control during the shell making process in order to reduce the occurrence of inclusion defects in the casting.

关 键 词：离心泵钛泵体 熔模精密铸造 石墨型铸造 气缩孔 工艺优化 

分 类 号：TG249.4[金属学及工艺—铸造]