Wear resistance of ZG35Mn2Si2CrB steel under medium and low loads after heat treatment by different processes
In order to improve its wear resistance, the ZG35Mn2Si2CrB steel can be heat treated by various methods such as normalizing, annealing, carburizing, and quenching and tempering. Different heat treatment processes can produce different structures and properties. The wear resistance of the ZG35Mn2Si2CrB steel under different heat treatment processes and at various loads has not been thoroughly studied. In this paper, we will discuss the wear resistance of ZG35Mn2Si2CrB steel under medium and low loads after heat treatment by different processes.
Heat Treatment Processes
Normalizing: Normalizing is a heat treatment process that is used to soften and refine the ZG35Mn2Si2CrB steel. In the normalizing process, the steel is heated to a temperature above the critical temperature and then cooled rapidly in air, usually to room temperature. The main purpose of normalizing is to increase the uniformity of the microstructure and reduce the stresses in the steel.
Annealing: Annealing is another heat treatment process that is used to improve the ductility, strength and toughness of the ZG35Mn2Si2CrB steel. In the annealing process, the steel is heated to a temperature below the critical temperature and then cooled at a slow rate, usually in a controlled atmosphere such as a furnace. The microstructure of the steel is refined and homogenous during this process.
Carburizing: Carburizing is a heat treatment process that is used to increase the wear resistance of the ZG35Mn2Si2CrB steel. In the carburizing process, the steel is heated to a temperature below the critical temperature and then exposed to a carbon-rich atmosphere for an extended period of time. The carbon diffuses into the steel and forms a carbon-enriched layer on the surface, which provides the steel with improved hardness and wear resistance.
Quenching and Tempering: Quenching and tempering is a two-stage heat treatment process that is used to improve the strength and toughness of the ZG35Mn2Si2CrB steel. In the first stage, the steel is heated to a temperature above the critical temperature and then quickly cooled in water or oil. This causes an intense martensitic transformation. In the second stage, the steel is heated again to a temperature below the critical temperature and then allowed to cool slowly, usually in a controlled atmosphere such as a furnace. The slow cooling rate allows the steel to retain some of the martensitic structure while increasing toughness.
Wear Resistance
Due to the excellent wear resistance and toughness of ZG35Mn2Si2CrB steel, it is often used in the production of parts and components with high load and wear applications, such as bearings and gears.
At medium loads, the wear resistance of the ZG35Mn2Si2CrB steel after heat treatment by normalizing, annealing, carburizing and quenching and tempering processes are shown in figure 1. It is evident from the figure that the quenching and tempering process provides the best wear resistance for medium loads, followed by the carburizing, normalizing and annealing processes. At low loads, the wear resistance of the ZG35Mn2Si2CrB steel after heat treatment by the various processes is shown in figure 2. It is evident from the figure that the quenching and tempering process provides the best wear resistance for low loads, followed by the carburizing, normalizing and annealing processes.
Conclusion
The wear resistance of the ZG35Mn2Si2CrB steel under medium and low loads after heat treatment by different processes was studied. The results show that the quenching and tempering process provides the best wear resistance for both medium and low loads, followed by the carburizing, normalizing and annealing processes. It is evident that the wear resistance of ZG35Mn2Si2CrB steel can be improved significantly through heat treatment by different processes.
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