Forging forming -- English · 2023年7月26日 0

How do stainless steel forgings cope with high temperature environment?

Stainless steel forgings may be subject to some challenges in high temperature environments, such as oxidation, creep, thermal fatigue, etc. The following are some methods and suggestions to cope with high temperature environment: Material selection: Choose stainless steel materials suitable for high temperature environment, such as high temperature austenitic stainless steel (such as 316L, 310S, etc.) or cobalt based, nickel based superalloys. These materials have good high temperature resistance and oxidation resistance. Surface protection: Increase the oxidation resistance of stainless steel forgings by means of surface coating, coating, spraying, etc. For example, a protective layer can be formed on the surface of stainless steel by electroplating, thermal spraying, gas carburizing and other methods to improve high temperature resistance and oxidation resistance. Controlled cooling rate: In high temperature environments, controlling the cooling rate of stainless steel forgings can reduce thermal stress and prevent the generation of hot cracks. Appropriate cooling medium, cooling rate and reasonable cooling process can be used to achieve the best results. Process optimization: When manufacturing stainless steel forgings, optimizing the processing process can improve its high temperature performance. For example, the deformation temperature and deformation rate are controlled during the forging process to avoid overtemperature or too fast deformation and reduce residual stress. Comprehensive design considerations: When designing stainless steel forgings, it is necessary to fully consider the working conditions and needs under high temperature environment. For example, rational layout of structures to reduce stress concentration areas; Using appropriate angles, arcs, etc., to reduce stress concentration; Avoid forging too thin wall. Inspection and maintenance: Regular inspection and maintenance of stainless steel forgings, timely detection and repair of possible cracks, oxidation or other damage. Non-destructive testing methods, such as ultrasonic and X-ray testing, can be used to ensure the safety and reliability of stainless steel forgings in high temperature working environments. Please note that the requirements and challenges of different high temperature environments are different, and specific solutions need to be evaluated and determined according to the actual situation and specific requirements.