The selection of good planetary reducer materials is conducive to improve the bearing capacity and service life of gear reducer. According to the structural characteristics of precision reducer and the load properties of gear, hard gear should be widely used. There are many heat treatment methods to obtain hardened gears. Such as surface quenching, integral quenching, carburizing quenching, nitriding, etc., shall be selected according to the characteristics of gear reducer. Gear reducer 1. Surface quenching There are two common surface quenching methods: high frequency quenching (for small size gears) and flame quenching (for large size gears). When the hardened layer of surface quenching includes the bottom of tooth root, its effect is good. The tooth surface hardness can reach 45-55hrc 2. Nitriding The use of nitriding can ensure that the gear can achieve high tooth surface hardness and wear resistance under the condition of as little deformation as possible. After heat treatment, no finishing machining is carried out, and the bearing capacity is improved. 3. Carburizing and quenching Carburized and quenched gears have relatively large bearing capacity, but finishing process (gear grinding) must be used to eliminate heat treatment deformation to ensure accuracy. Carburized and quenched gears are usually made of alloy steel with carbon content of 0.2% - 0.3% before carburization. The hardness of tooth surface is often in the range of 58-62hrc. If it is lower than 57hrc, the hard surface strength decreases significantly, and if it is higher than 62hr, the brittleness increases. The hardness of the carburized and quenched gear gradually decreases from the gear surface to the deep layer, and the effective carburizing depth is specified as the depth from the surface to the hardness of 5.25hrc. The effect of carburizing and quenching on the bending fatigue strength of gears not only improves the hardness of the core, but also lies in the residual compressive stress on the surface. It can reduce the stress in the maximum compressive stress area, so the tooth root cannot be ground during tooth grinding
Our products are mainly exported to Japan, the United States, Germany, Southeast Asia and other countries and regions. Our customers include many OEM customers specializing in construction machinery. We have partnered with several of the Fortune 500 companies to become one of their major foundry suppliers in China.
How to provide goods?
Usually we will ship the goods to the sea. The factory is only 460 kilometers away from the port. It is very convenient and convenient to transport the goods to any other country. Of course, if your cargo is very urgent, Ningbo Airport and Shanghai Airport are also nearby.
What is the payment term?
When we provide you with a quotation, we will negotiate with you: EXW, FCA, FOB, CIF, CRF, DAP Etc. For mass production, you need to pay 30% of the deposit before production and 70% of the balance before shipment. Our most common way is T/T.
How to ensure the quality of your products?
First, we will check after each process. For finished products, according to customer requirements and international standards.
How many employees does your company have? What is the relationship between technicians?
We now have more than 180 employees, including 36 engineers and 28 QCs.
What is the ability of your company?
We have a number of production lines with a monthly production capacity of 1,600 units and an annual production capacity of 20,000 units.
