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China non quenched and tempered steel

Compared with similar foreign materials, the gap between China’s non quenched and tempered steel is as follows: 1) Poor quality of hot rolled products; 2) There is no certain control range for residual elements, resulting in great fluctuations in mechanical properties; 3) The chemical range specified in the standard...

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Forging residual heat quenching process parameters

The process parameters of forging and quenching have a great influence on its strengthening effect. The main process parameters include: forging heating temperature, forging deformation, residence time after forging, forging quenching temperature, tempering after quenching with forging waste heat, etc. 1) Forging heating temperature (initial forging temperature): since the...

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Advantages of forging residual heat quenching process

Application of forging heat quenching process: 1) The connecting rod produced by forging heat quenching has higher strength and toughness than that by ordinary heat treatment, especially the yield strength ratio of the connecting rod has been greatly improved. 2) The initial forging temperature of 45 steel shall not...

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Theory of forging residual heat quenching

Compared with ordinary quenching and tempering, the hardness, tensile strength, elongation and impact value of forgings can be increased by 10%, 3-10%, 10-40% and 20-30% respectively. Generally, the increase of strength and hardness by ordinary heat treatment is always accompanied by the decrease of plasticity and toughness, while the...

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Powder metallurgy forging automobile connecting rod

Among the automobile connecting rods made of various materials, the powder metallurgy automobile connecting rod has advantages in hardness, wear resistance and strength. Powder metallurgy is a material saving, energy-saving and low production cost manufacturing technology for mechanical parts, which is very suitable for mass production. Powder metallurgy automobile...

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Billet die forged connecting rod

In order to ensure that the connecting rod has sufficient stiffness and strength under the condition of light structure, in the past, high-quality medium carbon structural steel with selected carbon content, such as No. 40 steel or No. 45 steel, was generally used for die forging. The hardness of...

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Die forged connecting rod

The performance of the die forged connecting rod is reliable. The inspection method is simpler than that of the cast connecting rod, and it can be mass produced on the automatic line. There are many dimensions and specifications of the die forged connecting rod. For example, the die forged...

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China automobile connecting rod forging

Connecting rod is widely used in all kinds of power machinery. It is an important part of all kinds of diesel or gasoline engines. In recent years, China’s annual automobile output has reached the production level of 1.5 million cars and 500000 trucks. Based on an average of 4.5...

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