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Taking 22CrMo material passive bevel gear of drive axle as the research object, this paper studies the influence of material composition fluctuation on carburizing and quenching characteristics of bevel gear by finite element method. Based on the upper and lower limits of the fluctuation range of the material elements, two groups of material property databases are established using material database software. The heat treatment simulation software is used to establish a model to simulate the carburizing and quenching process of 2 groups of passive bevel gears, and the surface carbon concentration, microstructure evolution and gear deformation of bevel gears are compared and analyzed. The results show that the material composition fluctuation has great influence on the phase structure distribution and gear deformation of 22CrMo bevel gear after quenching, but has little influence on carburizing layer.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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