40CrNiMoA

,望完美翻译

Introduction:

40CrNiMoA is a kind of alloy structural steel with great strength, toughness and hardenability, good mechanical processing performance and excellent fatigue plasticity. It is heat resistence and corrosion resistance, and is widely used for making various parts in power drive machinery.

Characteristics of 40CrNiMoA:

The biggest characteristic of 40CrNiMoA steel is its hardened and tempered structure, and its good mechanical properties, which not only has good wear-resistance, hardness uniformity and deformability, but also enhances the fatigue endurance and toughness of parts, meeting the requirements of application technology. The atmospheric corrosion resistance of 40CrNiMoA steel is much higher than that of other low alloy structural steel, and it is basically free of maintenance during the use period. It has excellent hot workability and basically has no temper brittleness.

Application of 40CrNiMoA:

40CrNiMoA is often used for making various parts in power drive machinery with high strength, toughness and hardenability, as well as good machinability and weldability. It is often used for producing gear parts, shafts, forks, levers, fasteners, transmission components and other parts for automobiles, tractors and other agricultural machinery. It is also used for producing parts for hydraulic turbine, compressors and other motor related parts.

Heat Treatment Process of 40CrNiMoA:

1. Normalizing: It is to heat the parts to 880℃-910℃ and then keep in the furnace for some time until the temperature is uniform. Then withdraw the parts and release them in the air to cool.

2.Annealing: Heat treatment process of heating to 650℃-740℃ and cooling as slowly as possible in a furnace.

3.Quench and temper: Heat the parts to 880℃-910℃, then quench them to austenite and heat them again to 540℃-680℃ to temper, finally cooling in the air.

Conclusion:

40CrNiMoA is a kind of alloy structural steel, which not only has excellent mechanical properties and components, but also can meet the requirements of application technology. It is widely used for making various parts in power drive machinery and it also has excellent hot workability with little temper brittleness. The heat treatment process of 40CrNiMoA includes normalizing, annealing and quench and temper.

40CrNiMoA steel is a kind of alloy steel commonly used in China. It has the advantages of high strength, hardness, toughness and good wear resistance, making it widely used in the manufacture of engineering machinery transmission parts, steel pipes and machine tools.

40CrNiMoA steel belongs to the alloy structural steel, with good mechanical properties and hardenability, good processes and strong hardenability, good strength and toughness characteristics. It is a kind of alloy steel for engineering machinery parts and various mechanical parts with better overall performance. It is an important part of the manufacturing process of mechanical products.

40CrNiMoA steel has the characteristics of small quenching deformation, good high and low temperature impact toughness, and relatively high fatigue strength. It is mainly used for large and medium-sized plastic moulds and die-casting dies.

Chemical composition of 40CrNiMoA steel :The chemical composition of 40CrNiMoA steel is relatively complex, including carbon, silicon, manganese, phosphorus, sulfur, chromium and nickel in different concentrations. The distribution of these elements contributes to the characteristics of the steel.

Compared with other types of alloy steel, the comprehensive mechanical properties of 40CrNiMoA steel are superior. Among them, the yield strength is greater than 860MPa, the tensile strength is 1100-1300MPa, and the elongation is usually greater than 14%.

In conclusion, due to its excellent mechanical properties, wear resistance and hardenability, 40CrNiMoA steel is widely used in various engineering components manufacturing and disassembly, with good machinability, good weldability and high strength, making it one of the best alloy structural steels in the world.