1. Principle of low temperature correction
Low-temperature correction refers to a process method of straightening silver parts by applying external force under the condition of lower than the recrystallization temperature of the lack of alloy. In the low temperature state, the lack of alloy structure becomes unstable, the atomic activity ability to decline, at this time on the silver pieces of external force, can make it happen plastic deformation, so as to improve the internal structure and mechanical properties of forgings.

2. Low temperature correction process
Temperature control:Before low temperature correction, the forging needs to be cooled to the appropriate low temperature temperature. According to the type of alloy and the specific requirements of the forging, select the appropriate cooling temperature and cooling rate. Applying external force: In the low temperature state, the forging is subjected to external force by means of a press or a tensile machine, etc., so as to cause it to undergo plastic deformation. The application of external force needs to control the strength and direction to ensure uniform deformation of the forging. Deformation control: in the low-temperature calibration process, you need to control the degree and rate of deformation. Too large or too small a degree of deformation will affect the calibration effect. At the same time, the rate of deformation also needs to be controlled properly to avoid excessive internal stress. Cooling and recovery:After plastic deformation is completed, the forging needs to be cooled to room temperature and recovered. Reply to the external reason can eliminate internal stresses and improve the stability of the forging.

3. Application of low temperature correction
Improve the internal structure: through the low temperature correction, can be forging internal defects such as holes, cracks, etc. to eliminate, improve the density and mechanical properties of the material. Improve mechanical properties: through the low temperature correction, can refine the grain of the material, improve the mechanical properties of the alloy, such as strength, hardness and so on.
Restore mechanical properties: For some high-temperature treatment or after a large number of plastic deformation of ferroalloy forgings, their mechanical properties may decline. Through low-temperature calibration, it can restore its mechanical properties and improve the utilization rate of the material to optimize the processing flow: in some alloy forgings that need to go through multiple processing stations, any-temperature calibration can be used as an auxiliary process to optimize the processing flow and improve the production efficiency.