Technique for induction heating steel rod tempering heat treatment

A quenching and tempering heat treatment and induction heating technology, applied in heat treatment furnaces, heat treatment equipment, manufacturing tools, etc., can solve problems such as poor steel bar structure, small batch production, poor process controllability, etc., to achieve convenient process and save The effect of materials and convenient transportation

Inactive Publication Date: 2008-05-28
TIANJIN JINNENG POWER ELECTRONICS
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  • Abstract
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Problems solved by technology

The traditional quenching and tempering heat treatment method, due to uneven heating, leads to poor microstructure of the treated steel rod, and poor process controll...

Method used

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  • Technique for induction heating steel rod tempering heat treatment

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Embodiment Construction

[0012] The specific implementation manner of the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0013] As shown in the figure, a process method of quenching and tempering heat treatment of steel rods by induction heating, the quenching and tempering process of steel rods through straightening-induction quenching-induction tempering-insulation tempering-rolling cooling and completed on a continuous production line, The specific process is:

[0014] A. Straightening: Put the steel rods on the feeding platform manually, and after they are leveled, they are sent to the parallel roller table 2 in a stepwise manner through the feeding machine 1, and are straightened by the seven-roller straightening machine 3 before entering the heat treatment. Through the parallel roller table 2, it is sent to the mechanical tractor 4 before the sensor;

[0015] B. Quenching: Through the steady speed operation of the t...

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Abstract

The invention relates to a process for modified heat treatment of induction heating steel rods, which is characterized in that modified process is accomplished on a continuous processing production line of straightening, induction hardening, induction tempering, heat-insulating tempering, and roll cooling of the steel rod. The specific process is straightening, quenching, tempering, cooling and straightening, blanking checking and warehousing. The beneficial effects of the invention are that heat effect of inductive loop is employed to carry on modified heat treatment of rolled steel, which enables the core organization to be evenly tempered sorbite organization, thereby preheating and warming are not needed, the temperature is raised rapidly, and manufacture of long pieces can be achieved via length sizing.

Description

technical field [0001] The invention belongs to metal heat treatment equipment, in particular to a process method for quenching and tempering heat treatment of induction heating steel rods. Background technique [0002] All steel blanks before machining need to be quenched and tempered. At present, the quenching and tempering treatment of steel bar materials has been adopted: according to the size of the workpiece, it is cut into the required size in advance, and then put into the resistance furnace for quenching and tempering treatment. The traditional quenching and tempering heat treatment method, due to uneven heating, leads to poor microstructure of the treated steel rod, and poor process controllability; it cannot be produced in small batches; and it consumes high energy, and it needs to be quenched with quenching oil, which affects environmental protection and is not safe. Safety. Contents of the invention [0003] The purpose of the present invention is to overcom...

Claims

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Application Information

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IPC IPC(8): C21D9/00C21D1/78C21D1/18
Inventor 李春长邓音张冬青袁俊亭高新华张传旭石蕊
Owner TIANJIN JINNENG POWER ELECTRONICS
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