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Fakai Valve Factory Site: Yongxing Industrial Zone, Longwan District, Wenzhou City Tel: 0577-88767789
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Briefly introduce the process design of stainless steel check valve

Release Date: December 12, 2016

1. Quality: The quality of forgings is ensured by ultrasonic inspection and liquid penetration inspection. According to the requirements of RCC-M, 100% ultrasonic flaw detection and evaluation are performed on the forgings, and liquid penetration inspection and evaluation are performed on all surfaces of the stainless steel check valve forging .
Quality control of the main body blank All parts of the stainless steel check valve are forgings. Forging is strictly performed in accordance with the forging process regulations and process cards. The forging temperature, the forging temperature, the degree of deformation and the deformation speed are strictly controlled. Method for cooling. The chemical composition analysis, mechanical property test, intergranular corrosion test, and metallographic structure analysis of the forged product meet the corresponding standards after analysis, test and determination.

2. Assembly: Testing high-quality products requires not only high-precision parts, but also how to assemble these high-precision parts into high-performance stainless steel check valves . Wenzhou Fake Valve has organized an experienced and skilled assembly and commissioning team composed of multiple technicians and senior technicians, which is responsible for valve assembly, commissioning, and testing, and has formulated cleaning processes and assembly processes for parts. Strict control during assembly and commissioning, to keep improving, to ensure the successful assembly and commissioning of stainless steel check valves , and to perform various performance tests, all indicators meet the requirements of the design task.
3. Welding: In order to improve the quality of surfacing, plasma argon arc welding is used for surfacing of the sealing surface of the valve disc and the valve seat. At the same time, in order to ensure the welding quality of stainless steel check valves, the welding process used in production was re-evaluated.
4. Process inspection: A quality plan has been prepared for the stainless steel check valve to ensure that the stainless steel check valve is obtained from raw materials, blank input, machining, welding, heat treatment, non-destructive testing, cleaning, assembly, factory test and various type tests. Quality control, and was approved and witnessed by the Second Research and Design Institute of the Nuclear Industry.