Introduction
Precipitation hardening stainless steel forging is a forging method that uses precipitation hardening stainless steel as a material and is processed by forging. Forging can be divided into hot forging, warm forging and cold forging according to the temperature range of the processing materials. During the forging process of precipitation hardening stainless steel, the structure of the whole steel material is improved, and various grain refinement, structure refinement, carbides precipitation differentiation and other processes are executed. Therefore, precipitation hardening stainless steel forging has excellent physical and mechanical properties.
Classification
The precipitation hardening stainless steel forging is divided into hot forging, warm forging and cold forging according to the temperature range of the material being processed. Hot forging is a process of forging at a temperature higher than the recrystallization temperature. It is divided into full hot forging and semi-hot forging. Warm forging is a forging process at a temperature close to the recrystallization temperature, usually in the range of 550℃-770℃. Cold forging is a process of forging at room temperature.
Working Principle
The working principle of precipitation hardening stainless steel forging is that after the precipitation hardening stainless steel material is heated, deformed and continuously forged, the precipitation hardening stainless steel material undergoes plastic deformation. As time goes on, the dislocation movement of the grain defect extends, and then a series of crystal structure changes occur, resulting in grain refinement and structure segregation. These processes make the stainless steel have excellent physical and mechanical properties.
Process Features
1. During the precipitation hardening stainless steel forging process, the metal temperature should be controlled strictly. Excessive heating temperature may cause recrystallization and cause serious waste losses; too low temperature may cause deformation embrittlement and reduce the mechanical properties of the material being forged.
2. During the precipitation hardening stainless steel forging process, the hammer should be started and stopped in a timely manner to ensure uniform changes in cross-sectional area, shape and distribution of metal flow.
3. The pressure of die forging should be increased and decreased in a regular manner to ensure the friendly cooperation between forging and die and prevent the formation of forging fracture, necking and other defects.
4. Precipitation hardening stainless steel forging has strong plasticity and can be forged at a lower temperature. It also has good hot forgability and can be used to make various complex shaped products.
Application
Precipitation hardening stainless steel forging is widely used in the aerospace, nuclear industry and other fields due to its good physical and mechanical properties such as high strength, high toughness and corrosion resistance. It can be used to process turbine blades, landing gear, fasteners and other high-performance components.
Conclusion
Precipitation hardening stainless steel forging is an important forging method that uses precipitation hardening stainless steel as a raw material. Its application can improve the corrosion resistance and strength of stainless steel components, so as to meet the needs of different industries.
