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A kind of production method of high-speed steel composite roll

A composite roll and production method technology, which is applied in the field of roll preparation, can solve the problems of high manufacturing cost and inability to process rolls, and achieve the effects of reducing production costs, prolonging the service life, and increasing the number of rolls used

Active Publication Date: 2019-10-01
辽宁省亿联盛新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the existing high-speed steel roll production technology, for the deep-grooved rolls used for rolling large-scale rolled materials, especially when the diameter of the groove bottom of the groove is close to or smaller than the diameter of the roll neck, the roll pass is as attached figure 1 As shown, if the roll adopts the existing centrifugal compound casting technology, the thickness of the working layer of the roll cannot meet the use requirements; if the roll adopts integrally cast high-speed steel, although the use depth of the pass can meet the requirements, the hardness of the roll neck must also reach 80-90HSD, not only the keyway, flat head, positioning hole, etc. on the roll neck cannot be processed, but also the roll manufacturing cost is very high

Method used

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  • A kind of production method of high-speed steel composite roll
  • A kind of production method of high-speed steel composite roll

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The formula of the high-speed steel material for the roll body is: C 1.92%, Si 0.85%, Mn 0.63%, Cr 6.12%, Mo5.19%, W 2.82%, V 3.89%, P 0.029%, S 0.026%, and the balance is Fe ;

[0030] The formula of the roll neck ductile iron material at both ends of the roll is: C 3.28%, Si 2.56%, Mn 0.70%, Ni0.69%, Cr 0.25%, Mo 0.22%, P 0.032%, S 0.032%, and the balance is Fe;

[0031] (1) Centrifugal casting of high-speed steel molten steel on the outer layer of the roll body:

[0032] First, the high-speed steel material of the roll body and the ductile iron material of the roll neck are smelted separately according to the specific composition requirements. When the chemical composition and temperature of the two materials meet the set requirements, the high-speed steel molten steel for the outer layer of the roll is first discharged, and the high-speed steel molten steel for the outer layer is firstly smelted. After the slag is removed from the steel, it is poured into the centr...

Embodiment 2

[0041]The formula of the high-speed steel material for the roll body is: C 1.92%, Si 0.85%, Mn 0.63%, Cr 6.12%, Mo5.19%, W 2.82%, V 3.89%, P 0.029%, S 0.026%, and the balance is Fe ;

[0042] The formula of the roll neck ductile iron material at both ends of the roll is: C 3.28%, Si 2.56%, Mn 0.70%, Ni0.69%, Cr 0.25%, Mo 0.22%, P 0.032%, S 0.032%, and the balance is Fe;

[0043] (1) Centrifugal casting of high-speed steel molten steel on the outer layer of the roll body:

[0044] First, the high-speed steel material of the roll body and the ductile iron material of the roll neck are smelted separately according to the specific composition requirements. When the chemical composition and temperature of the two materials meet the set requirements, the high-speed steel molten steel for the outer layer of the roll is first discharged, and the high-speed steel molten steel for the outer layer is firstly smelted. After the slag is removed from the steel, it is poured into the centri...

Embodiment 3

[0053] The formula of the high-speed steel material for the roll body is: C 1.78%, Si 0.72%, Mn 0.61%, Cr 6.02%, Mo5.15%, W 2.66%, V 3.83%, P 0.022%, S 0.025%, and the balance is Fe ;

[0054] The formula of the roll neck ductile iron material at both ends of the roll is: C 3.25%, Si 2.76%, Mn 0.80%, Ni0.63%, Cr 0.29%, Mo 0.21%, P 0.030%, S 0.029%, and the balance is Fe;

[0055] (1) Centrifugal casting of high-speed steel molten steel on the outer layer of the roll body:

[0056] First, the high-speed steel material of the roll body and the ductile iron material of the roll neck are smelted separately according to the specific composition requirements. When the chemical composition and temperature of the two materials meet the set requirements, the high-speed steel molten steel for the outer layer of the roll is first discharged, and the high-speed steel molten steel for the outer layer is firstly smelted. After the slag is removed from the steel, it is poured into the centr...

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Abstract

The invention discloses a production method of a high-speed steel compound roller and belongs to the technical field of roller preparation. According to the production method of the high-speed steel compound roller, the compound roller comprises a roller body and roller necks which are located at the two ends of the roller body; the roller body is divided into a roller body outer layer and a roller body core portion which are made from a high-speed steel material; the roller necks are made from a nodular cast iron material; centrifugal casting is adopted for high-speed steel of the roller body outer layer; and static state casting is adopted for high-speed steel of the roller body core portion and nodular cast iron of the roller necks. By means of the method, the roller with the roller body and the roller necks made from different materials can be produced, and the thickness of the work layer of the prepared compound roller meets the using requirement.

Description

technical field [0001] The invention relates to the technical field of roll preparation, in particular to a production method of a high-speed steel composite roll. Background technique [0002] High-speed steel rolls are widely used and promoted in the field of steel rolling due to their high hardness, good wear resistance and excellent use effects. However, the roll is a non-standard rolling mill spare part. With the different types of rolling mills, types of rolled materials, and service orders, the dimensions, specifications, structural shapes, and pass depths of the rolls are also different. In the existing high-speed steel composite roll production technology, such as ZL97100083.2 discloses that the outer material of the roll is high-speed steel, and the core material of the roll is ductile iron. The manufacturing process is to pour the high-speed steel liquid into the rotating centrifuge mold Inside, when the high-speed molten steel in the outer layer has just solidif...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D19/16B22D19/04B22D13/02C22C38/36C22C38/22C22C38/24C22C38/02C22C38/04C22C37/10
Inventor 宫开令宫世禄
Owner 辽宁省亿联盛新材料有限公司
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