In the process of gear processing and production, the most important thing is to select good materials and use good materials to produce high-quality gears. The selection of materials mainly focuses on the following points:

1.Meet the technical performance of gear production materials: the process performance of materials refers to the ability of materials to meet various processing process requirements. Therefore, the selection of gear processing and forging materials should be carried out through several heat treatment methods.

2.Economic requirements of materials: on the premise of meeting the service performance, the selection of gear production materials should also pay attention to reducing the total cost of parts as much as possible. Consider the price of the material itself. The price of carbon steel and cast iron is relatively low, so choosing carbon steel and cast iron on the premise of meeting the mechanical properties of parts not only has better processing performance, but also can reduce the cost. Consider the cost of gear production process. Firstly, different heat treatment methods lead to different relative processing costs. Secondly, the cost can be reduced by improving the heat treatment process.

3.Reasonable selection of gear processing and production materials: in order to meet the mechanical properties of materials, the tooth root is subjected to large bending stress, which may lead to the strength failure of tooth surface or tooth body. Each point on the tooth surface has relative sliding, which will cause wear. The main failure modes of gears are electric erosion, tooth surface bonding, plastic deformation and tooth fracture.

Therefore, gear manufacturing materials are required to have high bending fatigue strength and contact fatigue strength, tooth surface hardness and wear resistance, core strength and toughness.

The above is an introduction to the key points that should be followed in the selection of gear processing materials. Those who need gear processing are welcome to consult IHF Hefa gear manufacturers.