Heat treatment of Crusher
Author:xixi Addtime:2019-06-10 Click:
Heat treatment is the process of heating or cooling metal materials by changing their structure to obtain desired properties.
The main types of heat treatment are quenching, annealing, tempering, and normalizing the 4 ways.
The 1. is to simply say: quenching quenching material after heating treatment hardened. Manufacturing process of former Japanese sword in it. Of course, not what is cooling after heating it. Various materials (components) with corresponding heating temperature, holding time and cooling mode.
For the most common steel, the austenitizing temperature changes it into martensite structure, thus obtaining the operation of high hardness.
2. Annealing: this is the heat treatment by which the heated material is cooled slowly to soften it or to eliminate its residual stress. Of course, there are also heating temperatures, heat preservation times, and cooling methods.
Materials that cannot be machined can be machined by annealing. This problem can also be eliminated by annealing as a result of cutting deformed casting and forgings. Therefore, it is an important processing method.
3. Tempering: only by quenching, will it become hard and brittle, resulting in deformation due to residual stress. In order to solve this problem, tempering treatment is carried out, that is, the microstructure of the quenched material is in a state or precipitates, A stable structure can be obtained. In order to obtain such a structure, it is heated to a certain temperature and then cooled, known as tempering.
The tool steel represented by high-speed tool steel is toughened by tempering without reducing its hardness.
4.: normalizing the workpiece heated to austenite after cooling in the air operation, called normalizing. By normalizing, work organization will become a relatively fine ferrite or cementite and pearlite with the organization, so as to improve its mechanical properties, eliminate the influence factors of the processing, to improve its toughness. In addition, the heat treatment of steel and martensite, austenite method, solution heat treatment, precipitation hardening.
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