What impact does normalizing and tempering treatment have on the performance of ZLY250-11.2-2 gear reducer

Normalization and tempering treatment have different effects on the performance of ZLY250-11.2-2 gear reducer, as follows:

• The impact of normalizing treatment

• Removal of stress : Normalization treatment can eliminate excessive stress inside the gear, reduce the risk of deformation or cracking caused by internal stress during use, and improve the dimensional stability of the gear.

• Increase toughness : Normalization can increase the toughness of the gear, so that the gears are not prone to brittle fracture when they bear a certain impact load. For some working scenarios with small impact loads, normalized gears can meet the usage requirements.

• Improve cutting performance : Normalization can improve the cutting performance of gear materials, make subsequent cutting processing smoother, improve processing efficiency, and reduce tool wear. The hardness of normalized gears is generally in HB163-217, which is conducive to cutting and processing.

• Refining grains : Normalizing the grains can be refined and evenly organized by heating the gears to a suitable temperature and cooling them in the air. However, compared with tempering and tempering, the strength and hardness of the gears are limited.

• The impact of tempering and quality treatment

• Improve comprehensive mechanical properties : The tempering treatment can refine the grains and obtain uniform tempered cornula structure, so that the gears have excellent comprehensive mechanical properties. The hardness of tempered gears can generally reach HB220-285, and its yield limit and impact toughness can be about 40% higher than that of normalized treatment, and its strength limit and cross-section shrinkage rate are also 5%-6% higher (for carbon steel), which can better withstand alternating loads and impact loads.

• Enhanced impact resistance : Because the tempering gear has high strength and good toughness, it is easy to run in operation, has a large strength margin for the tooth root and has strong impact resistance. It is suitable for occasions with high mechanical performance requirements. For example, the gears treated by the ZLY250-11.2-2 The gear reducer can work more reliably in heavy load, high speed or high impact working environments with large impact.

• Improve dimensional stability : The material after tempering treatment has better dimensional stability during subsequent processing and use, which can ensure the accuracy of the gears, reduce transmission errors caused by dimensional changes, and improve the transmission efficiency and stability of the reducer.