Induction quenching method and device for multi-tooth column of mining tooth rail

Abstract

The invention relates to an induction quenching method and device for a multi-tooth column of a mining tooth rail, and provides the induction quenching method for the multi-tooth column of the miningtooth rail. The induction quenching device for the multi-tooth column of the mining tooth rail is adopted to quench a semi-finished three-tooth column of a tooth rail, and compared with a conventionalintegral quenching and tempering or integral quenching and tempering and tooth column induction quenching, according to the scheme, the semi-finished three-tooth column of the tooth rail can be subjected to induction quenching at a time, the quenching efficiency is improved by 40% or higher, and the quenching efficiency is higher. The invention further provides the induction quenching device forthe multi-tooth column of the mining tooth rail. The device comprises a quenching induction mechanism, spraying mechanisms and a fixing mechanism, wherein the quenching induction mechanism is providedwith a first heating ring, a second heating ring and a third heating ring, and the spraying mechanisms are further arranged on the two sides of the shape contour of the semi-finished three-tooth column of the tooth rail; and compared with the conventional integral quenching and tempering or integral quenching and tempering and tooth column induction quenching, the quenching quality is higher, andit is guaranteed that the quenching quality of a conventional tooth column of the tooth rail and a special-shaped curved surface multi-tooth column of the tooth rail is stable.

Description

technical field [0001] The invention relates to the technical field of mine gear rail processing, in particular to an induction hardening method and device for mine gear rail multi-tooth columns. Background technique [0002] The rack is one of the main parts of the mining scraper conveyor. Generally, there are two heat treatment processes of quenching and tempering and induction hardening on the surface of the rack. The rack is subjected to complex forces and harsh environments during use. After years of feedback from customers, the rack materials are finally selected as 42CrMo and 40Mn2. [0003] There are two conventional heat treatment methods for mine racks, the first is overall quenching and tempering; the second is overall quenching and tempering + tooth column induction hardening. The first type of overall quenching and tempering rack is suitable for supporting equipment with small bearing capacity. The disadvantages of overall quenching and tempering are: 1) It can...

AI Technical Summary

Problems solved by technology

The first type of overall quenching and tempering rack is suitable for supporting equipment with small bearing capacity. The disadvantages of overall quenching and tempering are: 1) It can only be used for equipment with small fully mechanized mining capacity, which is easy to wear and requires many spare parts

2) The quenching and tempering quality is unstable, and the hardness consistency of each tooth column is poor

The second type is the gear rack with overall quenching and tempering + tooth column induction hardening, which is only suitable for quenching single-shaped rack rack single tooth column or double tooth column, and is suitable for supporting equipment with large bearing capacity, but there is still quenching of rack tooth column There are problems such as unstable quality and low quenching efficiency, and there is also the problem that induction hardening cannot be performed for multi-tooth columns with heterogeneous curved surfaces of racks.

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