The selection of gear material is very important for qualified and high-quality spiral bevel gear, which is mainly based on the load borne by the gear, the accuracy requirements of spiral bevel gear and the speed. The load is measured by the unit compressive stress on the tooth surface...
Compared with similar products in advanced countries, the quality of truck gears in China lags far behind, with an average service life of only about half, high energy consumption per unit product and low labor productivity. In order to improve the quality of truck gears, in addition to appropriate...
1. Effect of temperature on gear deformation There is no doubt that with the increase of heating temperature and quenching temperature, the heat treatment deformation of parts will increase. Therefore, the quenching temperature of general parts should be as low as possible on the premise of ensuring hardness and...
Through the process test of two different pre heat treatments on the deformation law of the parts after final carburizing and quenching, and the analysis and Research on the deformation law, the following conclusions are drawn: (1) The deformation of gear with isothermal annealing of gear blank after carburizing...
1. Test purpose Verifying the rationality of bevel gear process is an effective guarantee to reduce the heat treatment deformation of bevel gear; 2. Test object We selected the representative of thin-walled parts that are most sensitive to bevel gear technology: 9t 3456 speed gear sleeve (drawing No. 1701357-4e...
With the increasing demand for coal mine output, the TBM model has higher and higher requirements for gear quality and performance. The gear is deformed and cracked in the process of heat treatment and the gear box pushing gear occurs from time to time in coal mining excavation. Here,...
The depth of carburizing layer on the gear surface is uneven, resulting in discontinuous performance of different parts. The weak area is damaged first, and then the whole gear is damaged, which seriously affects the service life of the gear. 1. Cause analysis (1) During solid carburizing, the temperature...
Due to improper treatment and excessive carburization, massive and network carbides will appear on the surface of carburized gear. When in use, the plastic deformation capacity of gear will be reduced, the impact resistance will be weakened, the bending fatigue performance of tooth root will be reduced, the tooth...
In addition to the old standard well carburizing furnace, deep carburizing well furnace, sealed box multi-purpose furnace, single and double row continuous carburizing automatic line, rotary kiln and other furnace types can also be produced in China. In recent years, these furnaces have made great progress in terms of...
Although the deep carburizing of large heavy duty gears improves the bearing capacity and prolongs the service life, it still has the disadvantages of long production cycle, high cost and large deformation. Therefore, the deep nitriding process is being studied abroad to replace the deep carburizing process. ZHY gear...