42CrMo steel is a Chinese alloy steel, and has high strength and toughness, good hardenability, no obvious temper brittleness, good fatigue limit and repeated impact resistance after quenching and tempering, and good low temperature impact toughness. This material also has strong metallurgical stability. 42CrMo steel is widely used in the production of twisted Cords, permanent magnets, drive shafts, transmission axles and machine components.
42CrMo steel has high strength, good comprehensive mechanical properties, good hardenability, and is widely used in quenching and tempering. The parts processed from 42CrMo have high toughness and good comprehensive mechanical properties, and can be used under various special operating conditions. This material can also be used on hard shock-resistant and difficult cutting machine parts, such as gears, couplings and so on. In addition, 42CrMo steel also has wide applications in some pressures vessels and connecting rods.
The hardness of 42CrMo steel is improved by low temperature tempering treatment. After tempering, it has good stability and low temperature impact toughness, which is especially suitable for making large and complex shapes. In addition, the strength of 42CrMo can also be used to make forgings, flanges, and hot press molds. In automobile used transmission shafts and heavy-duty wheels, the use of 42CrMo steel from the point of view of production and use cost is more economical and practical.
In order to ensure the performance of 42CrMo steel, the foundation of guarantee is the use of advanced production technology and advanced production equipment to form a complete set of production process. During the production of the steel ingots of 42CrMo steel, the uniformity of the structure of the molten steel must be ensured. This can not only reduce the development of hot crack during the continuous casting process, but also improve the quality of the steel ingot.Microstructure of 42CrMo steel is refined and uniform, and it can obtain good comprehensive performance.
The quenching performance of 42CrMo steel is also very important. According to the requirements of use or the specified hardness range in the standard, the heating temperature and quenching temperature of the parts are determined. For parts that require certain mechanical properties and high hardness, the heating temperature should be controlled strictly.
In the quenching process of 42CrMo steel, the surface of the workpiece shall not be decarburized, and oxidation decarburization should be prevented. When the oxidation of 42CrMo steel parts is too severe, there are often holes, surface cracks and other defects, which seriously affect the quality of the parts.
Generally speaking, 42CrMo steel is suitable for making turbine rotor blades, spindles, connecting rods, screws, cams and other mechanical components of high load under alternating impact load and cyclic load, and also for making parts that are not allowed to be too brittle, such as gears. It is suitable for producing some tools that require high strength and high toughness below 250 °C, such as taps, aluminum die-casting molds, etc. In some cases, 42CrMo steel can also be used to make stamping dies, strips and cold-bending profiles.
In general, 42CrMo steel has excellent wear resistance, high strength, fatigue resistance, and good shock resistance. It has a wide range of applications in various industries. With the help of advanced production technology and process, 42CrMo steel can achieve excellent performance, so it will be more and more Popular in many industries.
