Study on Optimization of the Casting Process of a Surge Relief Valve Body
Author of the article:FENG Kun, SHI Yu
Author's Workplace:Beijing Aerospace Petrochemical Technology Equipment Engineering Co., Ltd., Beijing 100176, China
Key Words:surge relief valve; cast process; stability; optimization
Abstract: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.