China Automotive gear manufacturers

The selection of automotive gear materials should consider the following aspects:

1.Strength and hardness: automotive gears need to withstand large loads and wear, so they need to have high strength and hardness.
2.Toughness: automotive gear needs to withstand impact and vibration during the working process, so it needs to have good toughness to avoid fracture and crack.
3.Wear resistance: the car gear needs to work for a long time, so it needs to have good wear resistance to extend the service life.
4.Processing performance: automotive gear needs to be precision machined, so it needs to have good processing performance to ensure processing accuracy and surface quality.

Commonly used automotive gear materials are as follows:

1.Carbon steel: Carbon steel has high strength and hardness, but poor toughness, easy to crack and fracture.
2.Alloy steel: alloy steel has high strength, hardness and toughness, but the processing performance is poor, and advanced processing technology is required.
3.Cast iron: Cast iron has good wear resistance and toughness, but the strength and hardness are low, suitable for low speed and medium speed gear.
4.Stainless steel: Stainless steel has good corrosion resistance and toughness, but the strength and hardness are low, suitable for low speed and medium speed gear.

The heat treatment process of automotive gear material is also an important factor affecting its performance. Commonly used heat treatment processes are as follows:

1.Quenching: quenching can improve the hardness and strength of the gear, but it will reduce the toughness, easy to crack and fracture. 
2.Tempering: Tempering can improve the toughness and wear resistance of the gear, but it will reduce the hardness and strength.
 3.Normalizing: Normalizing can improve the strength and hardness of the gear, while maintaining a certain toughness and wear resistance.
4. Surface strengthening: Surface strengthening can improve the wear resistance and fatigue life of the gear, the commonly used methods are carburizing, nitriding and spraying.

The selection of automotive gear material and its heat treatment process is an important issue in automotive manufacturing, it is necessary to comprehensively consider the strength, hardness, toughness, wear resistance and machining performance of the material and other factors, select the appropriate material and heat treatment process to ensure the performance and life of automotive gear.

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