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Heat treatment method of mining scraper

A heat treatment method and scraper technology, applied in heat treatment furnaces, heat treatment equipment, furnace types, etc., can solve the problems of ineffective guarantee of parts quality, ineffective implementation of process parameters, high labor intensity, etc., and achieve labor intensity reduction, The distribution of hardened layer is reasonable and the effect of improving comprehensive performance

Inactive Publication Date: 2011-03-16
NINGXIA TIANDI BENNIU IND GRP
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] However, the traditional scraper heat treatment method has the following disadvantages: 1. Only one end can be processed at a time, and one scraper can be processed twice, and the efficiency is low
2. Using time relay and manual control, the process parameters cannot be effectively implemented, and the quality of parts cannot be effectively guaranteed
3. Only one workpiece can be clamped at a time, which is labor-intensive

Method used

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  • Heat treatment method of mining scraper

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Embodiment 1

[0010] Scraper with a length of 800mm, transfer to the heat treatment device, call up the 800mm scraper quenching program, run the machine dry once, check whether the induction coil and water spray ring are leaking, clamp 4 scraper parts at a time, turn on the power, and execute this program. The conveyor belt of the machine tool moves, and the scraper reaches the induction coil area at a speed of 0.04m / s. The scraper starts to heat for 200 seconds. At this time, the temperature at both ends of the scraper reaches 900℃, and the scraper reaches again at a speed of 0.04m / s In the spray area, the spray ring is opened immediately, and the two ends of the scraper are quickly cooled. The cooling time is 70 seconds. After cooling, the spray ring is closed and the scraper reaches the unloading area for unloading. When the plate reaches the unloading area for unloading, the second scraper enters the induction coil to heat, repeat the above action, and complete the continuous quenching pr...

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Abstract

The invention relates to a mining scraper which is commonly used in a scraper conveyor and a transfer conveyor, in particular to a heat treatment method of the mining scraper. The heat treatment method is characterized by comprising the following steps: the scraper is placed on a conveyor belt of a scraper quenching machine tool, heated to 880-920 DEG C after reaching an induction coil area, cooled rapidly by spraying water after reaching a water spray area, and then discharged after reaching a discharge area. The heat treatment method using the technical scheme provided in the invention has the technical effects as follows: the product quality is guaranteed, the comprehensive performance of the scraper is improved, ends are wear resistant and the service life is prolonged; two ends can be machined per time by adopting closed-coil medium-frequency quenching, thus improving the efficiency by 1 time compared with the original manufacturing method; and heating time and water spray time are controlled by programs, technological parameters are effectively executed, the scraper is subject to surface strengthening by induction heating so as to ensure that the strength and the hardness of a scraper matrix can meet the requirements, and a hardening layer is distributed rationally without hardening cracks, thus effectively guaranteeing the quality of parts.

Description

Technical field [0001] The invention relates to a mine scraper commonly used on scraper conveyors and transfer machines, in particular to a heat treatment method for mine scrapers. Background technique [0002] Scraper, as the main part of the scraper conveyor and transfer machine, is also a vulnerable part, and the amount is very large. When the scraper is in normal use, friction occurs between the ends of the scraper conveyor and the middle plate of the scraper conveyor, and the wear is very serious. Improve the hardness of the scraper end, which can greatly increase the service life of the scraper and improve the overall performance of the scraper conveyor. Service life, thereby increasing the amount of coal. [0003] The traditional squeegee heat treatment method has the following shortcomings: 1. Only one end can be processed at a time, and one squeegee is processed twice, which is low in efficiency. 2. With time relay and manual control, the process parameters cannot be imp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/18C21D1/667C21D1/42C21D9/00
CPCY02P10/20Y02P10/25
Inventor 金培武
Owner NINGXIA TIANDI BENNIU IND GRP
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