Production technique of roller

A production process and roll technology, which is applied in the direction of rolls, metal rolling, manufacturing tools, etc., can solve the problems of difficult production, high production cost, cumbersome process, etc., and achieve the effects of convenient operation, increased yield, and reduced process steps

Inactive Publication Date: 2013-12-18
湖州市银鑫轧辊有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nowadays, the materials commonly used to manufacture rolls are conventional materials such as high-speed steel or composite steel. The rolls produced by these conventional materials are large, the production cost is high, the process is cumbersome, and the production is difficult.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] In the production process of the roll of the present invention, the roll includes an alloy outer layer and a core, and the chemical composition weight percentage of the alloy outer layer is: 1.50%≤C2.20%, Si≤0.060%, 0.40%≤Mn≤1.20%, P≤ 0.030%, S≤0.025%, 3.00%≤Cr≤8.00%, Ni≤1.50%, 2.00%≤Mo≤8.00%, 2.00%≤V≤9.00%, W≤3.00%, Nb≤0.85%, Al≤1.20 %, the balance is Fe; the weight percentage of the chemical composition of the core is: 2.8%≤C≤3.4%, 1.8%≤Si≤2.6%, 0.3%≤Mn≤0.6%, P≤0.08%, S≤0.03%, 0.04%≤Mg≤0.06%; the production steps of this roll are: 1) material preparation, leaving a length allowance for hoisting hole processing; 2) processing both ends of the blank; 3) processing the center holes at both ends; 4) top ends, Rough turning; 5) Drilling hoisting holes outside the length of the finished product; 6) Quenching and tempering treatment to make the hardness of the roller body reach 40-50HSD; 7) Correcting the center holes at both ends; 8) Semi-finishing the two ends of the top; ...

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PUM

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Abstract

The invention relates to a production technique of a roller, which is characterized by comprising the following steps: 1) preparing materials; 2) processing two end surfaces of a blank; 3) processing central holes on the two ends; 4) abutting against the two ends, and carrying out rough turning; 5) drilling a suspension hole beyond the length of the finished product; 6) carrying out quenching and tempering until the hardness of the roller body reaches 40-50 HSD; 7) correcting the central holes on the two ends; 8) abutting against the two ends, and carrying out semi-finish turning; 9) carrying out rough grinding on the roller body; 10) carrying out quenching and tempering until the as-quenched hardness of the roller body surface reaches 88-93 HSD; 11) processing the length between the two ends to the required size; 12) carrying out finish turning; 13) carrying out rough grinding on the roller body and journal; 14) carrying out stress relief treatment; 15) correcting the central holes on the two ends; 16) abutting against the two ends, and carrying out fine grinding on the roller body and journal; 17) abutting against the two ends, and carrying out supergrinding on the roller body and journal to obtain the finished product. The roller prepared from a steel tube material has better toughness, wear resistance, thermoplasticity and the like than the roller prepared from a common material.

Description

technical field [0001] The invention relates to a production process of rolls. Background technique [0002] The roll is a key tool in the production of steel rolling. It needs to withstand quite strong force and heat during work. Therefore, it is necessary to choose suitable materials and processes during manufacturing to ensure that the roll will not have problems during use. Now the materials generally used to make rolls are conventional materials such as high-speed steel or composite steel. The rolls produced by these conventional materials are relatively large, with high production costs, cumbersome processes and difficult production. Contents of the invention [0003] Aiming at the problems existing in the prior art, the object of the present invention is to provide a technical solution for the production process of rolls. [0004] The production process of a roll is characterized in that the roll includes an alloy outer layer and a core, and the chemical compositio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/24C22C38/56B21B27/00
Inventor 黄金荣范银芳
Owner 湖州市银鑫轧辊有限公司
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