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...
During gear heat treatment, carburizing and quenching, a reasonable furnace charging method shall be adopted according to the specific conditions such as the shape and requirements of parts, so as to ensure uniform gear heating, quenching and carburizing atmosphere, so as to reduce deformation and ensure quality. Generally, there...
1. Test purpose Our company adopts high-grade and high-quality zocrmntih steel with 6 bandwidths according to the steel factory standard. According to the performance requirements of different parts, we select 20CrMnTiHA2, 20CrMnTiHA3 and 20CrMnTiHA4, which are respectively applied to the synchronizer part – two speed gear sleeve (representative of...
Three typical parts of heavy truck gearbox hc7s-120: first and second speed gear sleeve (representative of thin-walled castings), fourth speed gear (representative of transmission gear), and second shaft (representative of shaft parts). Carburizing and quenching process test of steel with guaranteed hardenability is carried out and its deformation law...
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...
1. Test purpose Verify the influence of different pre heat treatment methods on the deformation of final carburized helical cylindrical gear. 2. Test conditions Test equipment: Pre heat treatment equipment: ordinary normalizing adopts ordinary box resistance furnace: isothermal annealing is carried out on the isothermal annealing production line of...
1. Effect of pre heat treatment on cylindrical gear deformation Before 2010, our company adopted the ordinary normalizing method for the pre heat treatment of gear blanks, and after 2010, the isothermal annealing method was adopted for automobile gear blanks The influence of two pre heat treatment methods...
Among the main factors affecting the gear heat treatment deformation, the only thing that can be improved by the heat treatment department is the heat treatment itself or the material. In order to improve the cold and hot processing conditions of gears, the heat treatment plant of Hangzhou gear...
The corrugation, arris and cold deformation of gears are less, and the damage seems less. They show a surface state of material change and surface deformation. As shown in the figure, the surface of the gear has corrugation, which is a typical state of corrugation on the hardened off-axis...