How to ensure the quality of valve forgings to meet the needs of various industrial applications?

Quality assurance of valve forgings is a complex and systematic process involving multiple links and factors to ensure that they can meet the needs of various industrial applications. The quality of valve forgings depends largely on the raw materials used. Therefore, it is necessary to purchase high-quality raw materials from reliable suppliers and conduct strict quality inspections. The inspection items of raw materials include material, hardness, chemical composition, etc. Only raw materials that pass the inspection and meet the relevant standards can be put into production.
Valve forgings need to go through multiple processes during the production process, including forging, processing, welding, assembly, etc. The production process needs to be strictly controlled in each link to ensure the stable quality of the finished valve forgings. The forging temperature and pressure need to be controlled during the forging process to ensure that the internal structure and performance of the forgings meet the requirements. At the same time, the head and bottom of the forgings need to be sufficiently cut to ensure that the finished forgings are free of shrinkage cavities, looseness, severe segregation and other harmful defects.
The size and surface finish need to be controlled during the processing to ensure that the forgings meet the design requirements. This includes two stages: roughing and finishing, and strict size inspection and quality control are required at each stage. For valve forgings that need to be welded, the welding temperature and weld quality need to be controlled during the welding process. After welding is completed, non-destructive testing of the weld, such as ultrasonic testing and magnetic particle testing, is also required to ensure the integrity and sealing of the weld.
During the production process of valve forgings, a variety of tests are required to ensure product quality. These tests include dimensional testing, leakage testing, strength testing, etc. The inner and outer diameters, length and other dimensions of the valve forging are measured to ensure that it meets the design requirements. The sealing performance of the valve forging is tested by performing internal and external leakage tests on the valve forging. This usually includes two methods: air pressure testing and hydraulic testing. The pressure resistance of the valve forging is tested by performing pressure testing on the valve forging. This ensures that the valve forging can still maintain stable and reliable operation under high pressure.
Valve forging manufacturers need to establish and implement a strict quality management system, including quality manuals, quality control procedures, quality inspection processes and quality tracking records. These documents and control procedures clarify the quality requirements and quality control measures of the products, ensuring that the quality is controllable and traceable.