Shenzhen Su's heat treatment on wear failure early active bevel gear is due to improper assembly adjustment of heat treatment and after heat treatment has been put forward improvement measures and results
(1) heat treatment: strict inspection and control of carburizing temperature and time, strengthening the process inspection, to strengthen the control flow, pressure, flow rate of carburizing agent. According to the carburizing process requirements, control in the different carburizing period carburizing agent per minute drop number, ensure the carbon content in carburized layer depth and hardness, carburized layer, in the low temperature tempering process, to the exclusion of water vapor, CO2, O2 and other harmful substances, preventing decarburization.
(2) from the beginning of tooth shape processing active spiral bevel gear pair gear, detection after machining tooth area distribution, adjusting Gleason gear processing machine tool, the guarantee period in the middle part of the gear tooth down location, to make up after heat treatment deformation caused by tooth area move.
(3) the heat treatment of gear pair meshing after inspection, paired into assembly workshop assembly. In the assembly, use red lead powder oil coating the upper face, distribution status check tooth area, assembly and adjustment strictly according to technical requirements, ensure the gear backlash and tooth position precision.
Through these measures, effectively guarantee the gear after heat treatment quality, obtained the proper hardness, carburized layer depth and microstructure, the gear tooth position was controlled effectively; tooth surface stress is uniform, gear oil lubrication, the wear resistance of gear have been fully guaranteed, to prevent early gear wear phenomena.