Measures to improve fatigue of hardened gear reducer

The causes of fatigue damage of tooth surface gear reducer are: first, the quality problems in the machining and manufacturing process of the reducer; Second, the selection of process equipment is wrong, and the thermal power can not meet the requirements of production process, resulting in large load during actual operation, and hidden defects are gradually exposed, resulting in contact fatigue damage of final gear pair, peeling and fracture of rack, and scrapping of equipment. Therefore, the selection of hardened gear reducer must be careful.
(1) The selection of process equipment is wrong, and the thermal power can not meet the requirements of production process, resulting in large load during actual operation, and hidden defects are gradually exposed, resulting in contact fatigue damage of * * * final gear pair, peeling and fracture of rack, and scrapping of equipment. Therefore, the selection of hardened gear reducer must be careful.
(2) Due to the quality problems in the machining and manufacturing process of the reducer.
Measures to improve fatigue of hardened gear reducer:
(1) Adjust the reduction, reduce the load and eliminate low-temperature rolling, so as to ensure that the thermal power value of the reducer will not decrease due to excessive rolling force.
(2) Improve the environmental conditions of the reducer, adopt forced blowing, and reduce the oil temperature of the reducer body.
(3) Negotiate with the manufacturer to change the material of intermediate gear shaft from 20CrMnTi to 20CrMnMo to improve its comprehensive mechanical properties and prolong its service life.
(4) Maintain and operate carefully, strengthen inspection, ensure the amount of lubricating and cooling oil, and replace the medium in time to ensure the oil quality and performance.
(5) It is planned to add oil circuit circulation facilities.
(6) In addition, the oil pump of the oil tank replaces the fixed oil in the oil pool of the small capacity engine with the flowing oil to further reduce the cooling, inject oil, improve the lubrication capacity and improve the contact state.