Design and Practice of Finish Machining Process for Main Feed Pump of Hongyanhe Nuclear Power Plant Unit 5&6
Author of the article:LIU Kexin;XU Jikun;LIU Xia
Author's Workplace：Luoyang Shuangrui Special Equipment Co.,Ltd.,Luoyang 471003,China;Shanghai Aiways Automobile Sales Co.,Ltd.,Shanghai 200000,China
Key Words：nuclear power plant main feed pump processing technology On-site audit
Abstract：The finish machining process scheme of the casting of the main feed pump was designed.Through reasonable processing and testing steps,the site requirements of the third party were met,and casting defects were investigated and repaired,so as to avoid the failure and repeated audit of large castings due to processing defects.The results show that the machining process scheme is reasonable and the process flow is smooth,and the relationship between the size,shape and position tolerance,welding repair and maintenance,post-welding heat treatment and site audit of large precision casting of martensitic steel is solved,and the product quality meets the standard requirements.
