Surface chemico-thermal treatment method for mechanical parts and equipment used thereby

Abstract

The invention relates to a surface chemico-thermal treatment method for mechanical parts and equipment used by the surface chemico-thermal treatment method. The equipment comprises a material feeding and storing platform, a front washing machine, a pre-oxidizing furnace, a heating furnace, a rotary health carburizing furnace, a rotary bottom type diffusion furnace, a quenching cooling furnace, a quenching heat insulating chamber, a quenching oil tank, a rear washing machine, a low-temperature tempering furnace, an air cooling platform and a discharging platform. The devices are relatively independent, and integrally connected with transmission mechanisms to achieve the production technology of feeding material and preparing material-primarily washing-pre-oxidizing- heating-carburizin-diffusing-cooling-preserving temperature-quenching-finally washing-tempering-cooling with air-discharging and storing material. According to the devices, the forcible carburizing and diffusing in the carburizing technology are decomposed and individually carried out through an individual forcible carburizing chamber and an individual diffusion chamber, and the forcible carburizing and diffusing are combined based on different processing times, so that the requirements on mass production of the same furnaces different in requirements on layer depth and different in materials and parts are achieved; and the efficiency of the equipment is exerted to the maximum.

Description

technical field [0001] The invention relates to a method for heat treatment of workpieces and equipment used therefor, in particular to a method for surface chemical heat treatment of mechanical parts and equipment used therefor. Background technique [0002] As we all know, mechanical parts can be modified by surface chemical heat treatment (carburizing, nitriding, carbon, nitriding, etc.), and the required properties can be obtained, such as high hardness, high wear resistance, anti-seizure performance, etc. Carburizing (including carbon and nitriding) is one of the typical surface chemical heat treatment processes with a wide range of applications. [0003] Mechanical parts (such as gears) are treated by carburizing and quenching, which not only has high surface hardness and wear resistance, but also greatly increases their fatigue life. The typical carburizing and quenching process of parts is as follows: furnace heating-intensive infiltration-diffusion-lower temperatur...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a method for surface chemical heat treatment of mechanical parts, which overcomes the problem that existing cycle furnaces or cycle furnaces cannot heat treat parts with large differences in carburized layer depth or different steel types in the same furnace. defects in the parts

Images