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Resource-saving type high-boron high-speed steel composite roll and manufacturing method thereof

A composite roll and high-speed steel technology, which is applied to high-speed steel rolls and their preparation, resource-saving high-boron high-speed steel composite rolls and their preparation fields, can solve the problems of a large amount of precious alloys added to the rolls, low roll performance and high manufacturing costs. , to achieve the effect of excellent wear resistance, low cost and lower production cost

Active Publication Date: 2014-03-12
枣庄瑞兴机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the above-mentioned wear-resistant roll preparation technology has disadvantages such as complex process, low roll performance and short service life, or high manufacturing cost due to the high amount of precious alloy added to the roll, which limits its popularization and application.

Method used

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  • Resource-saving type high-boron high-speed steel composite roll and manufacturing method thereof
  • Resource-saving type high-boron high-speed steel composite roll and manufacturing method thereof

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Effect test

Embodiment 1

[0030] The resource-saving high-boron high-speed steel composite roll of the present invention (roll body length 600mm, roll body diameter 320mm) is composed of three parts: outer layer high-boron high-speed steel, intermediate transition layer graphite steel and roll core hot-rolled medium carbon round steel. High-layer boron high-speed steel and intermediate transition layer graphite steel are smelted in 1000 kg and 500 kg intermediate frequency induction furnaces respectively, and composited by a horizontal centrifuge, while transition layer graphite steel and roll core hot-rolled medium carbon round steel are composited by hot charging made. Its specific preparation process is:

[0031] ①Use scrap steel and high-chromium cast iron roll waste in the electric furnace first (the chemical composition and mass fraction of high-chromium cast iron roll waste are: 2.30~3.30%C, 0.30~1.00%Si, 0.50~1.20%Mn, P≤0.10% , S≤0.05%, 0.70~1.70%Ni, 18.01~22.00%Cr, 1.51~3.00%Mo, 0.00~0.60%V, ...

Embodiment 2

[0035] The resource-saving high-boron high-speed steel composite roll of the present invention (the length of the roll body is 600mm, and the diameter of the roll body is 350mm) is composed of three parts: high-boron high-speed steel in the outer layer, graphite steel in the middle transition layer, and hot-rolled medium carbon round steel in the roll core. High-layer boron high-speed steel and intermediate transition layer graphite steel are smelted in 1000 kg and 500 kg intermediate frequency induction furnaces respectively, and composited by a horizontal centrifuge, while transition layer graphite steel and roll core hot-rolled medium carbon round steel are composited by hot charging made. Its specific preparation process is:

[0036]①Use scrap steel and high-chromium cast iron roll waste in the electric furnace first (the chemical composition and mass fraction of high-chromium cast iron roll waste are: 2.30~3.30%C, 0.30~1.00%Si, 0.50~1.20%Mn, P≤0.10% , S≤0.05%, 0.70~1.70%...

Embodiment 3

[0040] The resource-saving high-boron high-speed steel composite roll of the present invention (roll body length 650mm, roll body diameter 380mm) is composed of three parts: outer layer high-boron high-speed steel, intermediate transition layer graphite steel and roll core hot-rolled medium carbon round steel. High-layer boron high-speed steel and intermediate transition layer graphite steel are smelted in 1000 kg and 500 kg intermediate frequency induction furnaces respectively, and composited by a horizontal centrifuge, while transition layer graphite steel and roll core hot-rolled medium carbon round steel are composited by hot charging made. Its specific preparation process is:

[0041] ①Use scrap steel and high-chromium cast iron roll waste in the electric furnace first (the chemical composition and mass fraction of high-chromium cast iron roll waste are: 2.30~3.30%C, 0.30~1.00%Si, 0.50~1.20%Mn, P≤0.10% , S≤0.05%, 0.70~1.70%Ni, 18.01~22.00%Cr, 1.51~3.00%Mo, 0.00~0.60%V, ...

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Abstract

The invention discloses a resource-saving type high-boron high-speed steel composite roll and a manufacturing method of the resource-saving type high-boron high-speed steel composite roll, and belongs to the technical field of rolls. The composite roll is composed of outer-layer high-boron high-speed steel, middle transition-layer graphitic steel and roll core hot rolling medium-carbon round steel, the outer-layer high-boron high-speed steel and the middle transition-layer graphitic steel are formed in a centrifugal combination mode, and the transition-layer graphitic steel and the roll core hot rolling medium-carbon round steel are formed in a hot charging combination mode. The composite roll is high in roll face rigidity and good in rigidity uniformity, and it is guaranteed that the composite roll is excellent in abrasive resistance. A roll core is formed by machining the hot rolling medium-carbon round steel and is good in obdurability, the roll breakage accident cannot happen in the roll using process, and good economic benefits and social benefits are achieved through popularization and application.

Description

technical field [0001] The invention relates to a high-speed steel roll and a preparation method thereof, in particular to a resource-saving high-boron high-speed steel composite roll and a preparation method thereof, belonging to the technical field of rolls. Background technique [0002]The roll is an important consumable part in steel rolling production. The performance and quality of the roll directly determine the production cost of the rolled material, the surface quality of the rolled material and the operating rate of the rolling mill. The research on improving the performance of the roll and reducing the manufacturing cost of the roll has continuously aroused the attention of domestic and foreign roll manufacturers. attention of researchers and researchers. In order to improve the performance of the roll, the Chinese invention patent CN103031496A discloses a cast steel roll, including an alloy outer layer and a core, and the chemical composition weight percentage of...

Claims

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Application Information

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IPC IPC(8): B21B27/02C22C38/54C22C38/56B22D13/02
Inventor 徐继亮符寒光
Owner 枣庄瑞兴机械制造有限公司
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