Heat Treatment
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Heat Treatment
Heat Treatment
Heat Treatment is the process of heating and cooling metals to achieve desired physical and mechanical properties through modification of their crystalline structure. The temperature, length of time, and rate of cooling after heat treatment will all impact properties dramatically. The most common reasons to heat treat include increasing strength or hardness, increasing toughness, improving ductility and maximizing corrosion resistance.
What is purpose of Heat Treatment
Heat Treatment process effect on material structure and grains. Most carbon steels and carbon alloy steels can be heat treated for the purpose of improving mechanical properties such as tensile and yield strength. This is accomplished due to the heat treatment fundamentally altering the microstructure of the steel.
Heat treatment procedures
Heating. The steel material could be heated below the critical point or above critical point. The former heating way can stabilize structure and eliminated the residual stress. The latter way can make material austenitizing.
Heat Preservation. The purpose of heat preservation is to uniform the heating temperature of steel material, then it will get a reasonable heating organization.
Cooling. The cooling process is the key process in heat treatment, it determines mechanical properties of steel pipe after cooling process.