Flux leakage controller used for controlling workpiece groove induction quenching flux leakage and preparation process thereof

Abstract

The invention relates to a flux leakage controller used for controlling workpiece groove induction quenching flux leakage. The flux leakage controller comprises a quartz glass tube and a magnetic conduction device wrapping the outer layer of the quartz glass tube. The magnetic conduction device is a magnetizer or silicon-steel sheets; the magnetizer is a medium frequency magnetizer or a high frequency magnetizer; and mica sheets are uniformly distributed between the silicon-steel sheets, and the quantity ratio of the silicon-steel sheets to the mica sheets is 10:1-20:1. The silicon-steel sheets and the mica sheets are provided with holes matched with the quartz glass tube, and the silicon-steel sheets and the mica sheets are fixed on the quartz glass tube through the holes and binder. The invention also discloses a preparation process of the flux leakage controller used for controlling the workpiece groove flux leakage. According to the shape of a workpiece groove, the flux leakage controller coupled with the workpiece groove is made, the flux leakage controller is filled in the workpiece groove, and the problems of flux leakage and magnetic line effusion in the position of the workpiece groove are solved; and the induction heating efficiency is improved, and simultaneously the phenomena of distortion and hardening break are reduced.

Description

technical field [0001] The invention relates to a material surface heat treatment process, in particular to a magnetic flux leakage controller and a preparation process for controlling the magnetic flux leakage during induction hardening of workpiece grooves. Background technique [0002] In 2020, the energy consumption of heat treatment in the United States will be reduced by 80%, the process cycle will be shortened by 50%, the production cost will be reduced by 75%, heat treatment parts will achieve zero distortion, the service life of heating furnace will increase by 9 times, the price of heating furnace will be reduced by 50%, and production will achieve zero pollution. At present, the unit energy consumption of heat treatment in the United States is 400kW·h / t, while the energy consumption in my country is more than double that of the United States. Therefore, the task of energy saving and emission reduction in heat treatment in my country is a long way to go, and resear...

AI Technical Summary

Problems solved by technology

However, there are two problems in this quenching process: (1) it is not suitable for the screw with small pitch; (2) the gap between the induction coil and the screw raceway is still large, and the magnetic flux leakage generated at the corners of the raceway is likely to cause local overheating and overheating. burn phenomenon

Although this method can solve the problem of keyway quenching deformation, overheating or overburning, the quenching device is complicated and is not convenient for industrial production.

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