Differential-temperature thermal treatment process for forged steel BD roller

A technology of differential temperature heat treatment and process method, which is applied in the direction of heat treatment furnace, heat treatment equipment, heat treatment process control, etc. It can solve the problems of insufficient impact toughness and wear resistance, so as to improve toughness, reduce scrap rate, and control grain length. a large degree of effect
CN111139351AActive Publication Date: 2020-05-12SINOSTEEL XINGTAI MACHINERY & MILL ROLL
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SINOSTEEL XINGTAI MACHINERY & MILL ROLL
Publication Date
2020-05-12

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Abstract

The invention discloses a differential-temperature thermal treatment process for a forged steel BD roller, and relates to the technical field of high-performance roller special thermal treatment. Thedifferential-temperature thermal treatment process comprises three aspects of a forged steel BD roller thermal treatment process, pretreatment before heating, and thermal treatment process parameters.The differential-temperature thermal treatment process improves wear resistance of a roller body and toughness of a roller neck, avoids insufficient wear resistance caused by too low roller body hardness, and avoids insufficient impact toughness caused by too high hardness of the roller neck; and the roller body and the roller neck of the prepared forged steel BD roller have hardness which can meet the process requirements, and can meet the design purposes of high strength and high wear resistance of the roller body as well as high toughness of the roller neck.
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Description

technical field

[0001] The invention relates to the technical field of special heat treatment of high-performance rolls, in particular to a process method for differential temperature heat treatment of forged steel BD rolls. Background technique

[0002] For the blanking rolls used in the blanking mill, the forged steel material is designed with grooves of different depths due to the requirements of on-site rolling conditions. Usually, the ratio of the width to the depth of the grooves ranges from 0.8 to 1.5. In order to meet the requirements of use, the roll body needs to obtain a hardness of 55-65HSD to ensure high strength and wear resistance, and the roll neck needs to obtain a hardness of 30-40HSD to have a certain toughness to meet the requirements of the roll neck rolling process. Rolling conditions such as bending moment and torque. If the heat treatment process of overall heating and cooling is adopted, the roll body and roll neck cannot be guaranteed to meet the t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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