水击泄压阀阀体铸造工艺优化研究  

Study on Optimization of the Casting Process of a Surge Relief Valve Body

作　　者：冯坤 师羽 FENG Kun;SHI Yu(Beijing Aerospace Petrochemical Technology Equipment Engineering Co.,Ltd.,Beijing 100176,China)

机构地区：[1]北京航天石化技术装备工程有限公司,北京100176

出　　处：《铸造技术》2022年第12期1096-1099,共4页Foundry Technology

摘　　要：水击泄压阀产品是预防水击危害发生的核心产品,常用于液体介质的长输储运行业中,具有泄放量大、压力高的特点,且阀门使用介质通常具腐蚀性。近年来,随着市场需求量的增加,应用工况日趋复杂,阀门设计难度增加,固有传统生产工艺已无法匹配现有技术难度需求。为提升水击泄压阀的铸造工艺稳定性,使产品适应更多高压、高腐蚀的复杂工况,本文以铸造缺陷易发的高压阀门为研究对象,使用MAGMA铸造仿真软件对现有铸造工艺进行仿真,并对浇注工艺系统及冷却工艺系统进行工艺优化。将改进后的样阀进行试验验证,得出可靠的铸造工艺定型方案,试制铸件未发生打压泄漏情况,缺陷率降低了20%,基本消除内腔缺陷,且进出口法兰位置均满足ASME B16.34探伤标准,极大提升现有水击泄压阀阀体铸造工艺的稳定性。Surge relief valve products are core products used to prevent water hammer hazards and are often used in the long-distance transportation and storage industry of liquid media. It has the characteristics of a large relief volume and high pressure, and the medium used for valves is usually corrosive. In recent years, with the increase in market demand, the application conditions have become increasingly complicated, and the difficulty of valve design is increasing. The traditional production process can no longer match the difficulty requirements of the existing technology. To improve the casting process stability of the surge relief valve and make the product adapt to more complex working conditions of high pressure and high corrosion, this paper takes the high-pressure valve prone to casting defects as the research object,simulates the existing casting process with MAGMA casting simulation software, and optimizes the casting process system and cooling process system. The improved sample valve was tested and verified, and a reliable casting process setting scheme was obtained. No pressure leakage occurred in the trial casting, and the defect rate was reduced by 20%, basically eliminating the cavity defects. The inlet and outlet flanges all met the ASME B16.34 flaw detection standard, which greatly improved the stability of the existing casting process of the surge relief valve body.

关 键 词：水击泄压阀 铸造工艺 稳定性 优化 

分 类 号：TG24[金属学及工艺—铸造]