Steel 1.7225 42CrMo4
Steel 1.7225 42CrMo4
Steel 1.7225 42CrMo4
Steel 1.7225 42CrMo4
Steel 1.7225 42CrMo4

Steel 1.7225 42CrMo4

Chemical composition Carbon C: 0.38 ~ 0.45% Silicon Si: ≤0.40% Manganese Mn: 0.60 ~ 0.90% Sulfur S: Allowable residual content ≤0.035% P: Allowable residual content ≤0.035% Chromium Cr: 0.90 ~ 1.20% Molybdenum Mo: 0.15 ~ 0.30%

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Product Introduction

Steel 1.7225 42CrMo4

42CrMo4 is a German grade of special steel. It has the characteristics of high strength, high hardness and high wear resistance, and is widely used in aerospace, automobile industry, military industry and other fields. The production process of 42CrMo4 requires strict quality control and high technical skills to ensure the stability and reliability of its material. At present, the domestic 42CrMo4 production technology has gradually matured, and is developing towards a higher level. In the future, we are confident that 42CrMo4 will become one of the representatives of domestic special steel and make greater contributions to the development of China's manufacturing industry.

This special steel has the following characteristics and applications:

High strength and hardness: with high yield strength and tensile strength, it is suitable for parts that bear high loads and impact loads.

Good heat resistance: can work at high temperatures for a long time without losing strength and hardness.

Good wear resistance: It has good wear resistance and is suitable for parts working in high friction and wear environment.

Suitable for manufacturing gear, bearing, crankshaft and other mechanical parts.

Its properties can be adjusted by heat treatment, such as quenching and tempering processes.

How to make 42CRMO4/DIN1.7225 steel?

The process of manufacturing high-quality 42CrMo4 steel is a strict quality control process, and every step of the connection requires sufficient experience and strict quality control. From the picture below, we can roughly see a production flow chart. The following is mainly about the following points of 42CrMo4 steel manufacturing.

Fusion casting technology There are two main methods of smelting and casting, one is electric arc furnace smelting, secondary refining and vacuum degassing, and the other is the continuous casting technology of converter steelmaking used by large steel mills. The difference is that electric arc furnace steelmaking is suitable for small batch production, and the composition of molten steel is greatly affected by scrap steel. The converter steelmaking is suitable for mass production and the purity of molten steel is high. Compared with electric arc furnace steelmaking, the smelting cycle is shorter and the power consumption is lower.

Hot working Corresponding to smelting and casting processes, 42CrMo4 ingot produced by EAL+LF+VD is mainly used in hot forging processes, including free forging and die forging. 42CrMo4 billets produced by the converter + continuous casting process are usually used as hot-rolled products with extremely high production efficiency.

Finally, it should be noted that they can be applied to each other, but must match the size of the blank to ensure an adequate compression ratio. Preliminary heat treatment process selection For 42CrMo4 steel, after hot rolling or hot forging, it is usually delivered without heat treatment. However, sometimes considering the machinability of the material, 42CrMo4 steel is usually selected for softening annealing treatment. 42CrMo4 normalizing is often selected to improve processing performance, eliminate internal stress, and prepare a good metallurgical structure for final heat treatment.

Steel 42CrMo4