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High abrasion resisting centrifugal composite high-speed steel roll

A technology of centrifugal compounding and high-speed steel, which is applied in the direction of rolling, metal rolling, metal rolling, etc., and can solve the problems of low wear resistance and heat strength, low red hardness, low hardness, etc.

Inactive Publication Date: 2019-10-29
唐山市国宗元裕龙重工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current rolls still have the problems of low hardness, low wear resistance, low heat strength, and low red hardness.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] According to the chemical composition requirements of the high-wear-resistant centrifugal composite high-speed steel roll, the proportioning scrap steel and appropriate amount of pig iron and alloy are put into the intermediate frequency electric furnace for melting. After melting, the chemical composition of the original molten steel is analyzed, and the corresponding alloy raw material is added according to the process. , Sampling analysis at 1610°C, the obtained chemical analysis composition is: outer layer: C1.68%, S0.020%, Si0.35%, Mn0.84%, P0.030%, Ni0.51%, Cr5.52% , Mo4.53%, V3.11%, W2.45%, NB1.10%, and the rest are scrap steel and molten steel with impurities; the middle layer and the core molten iron are also smelted in an intermediate frequency furnace, sampled and analyzed at 1435°C, and the obtained chemical analysis The composition is: C3.08%, S0.012%, Si2.12%, Mn0.43%, P0.050%, Ni0.38%, Cr0.11%, Mo0.10%, Re0.040%, Mg0. 45%, and the rest is molten iron with...

Embodiment 2

[0015] According to the chemical composition requirements of high-wear-resistant centrifugal composite high-speed steel rolls, the proportioning scrap steel and appropriate amount of pig iron and alloys are put into the intermediate frequency electric furnace for melting. After melting, the chemical substances of the original molten steel are analyzed, and the corresponding alloy raw materials are added according to the process. , 1620°C sampling analysis, the obtained chemical analysis composition is: working layer: C1.75%, S0.018%, Si0.43%, Mn1.0, P0.033%, Ni0.46%, Cr5.33%, Mo4.28%, V3.58%, W2.24%, NB1.3%, and the rest are steel scrap and impurities. The middle layer and the core molten iron are also smelted in the intermediate frequency furnace. Sampling and analysis at 1428 ° C, the chemical analysis components obtained are: C3.13%, S0.010%, Si2.35%, Mn0.66%, P0.045%, Ni0.35%, Cr0.12%, Mo0.08%, Re0.030%, Mg0.06%, The rest is molten iron with iron and impurities;

[0016] ...

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PUM

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Abstract

The invention relates to metallurgy rolls, in particular to a high abrasion resisting centrifugal composite high-speed steel roll. The high abrasion resisting centrifugal composite high-speed steel roll comprises the chemical components of, by mass, an outer layer including, 1.6-1.9% of C, 0.30-0.80% of Si, 0.60-1.2% of Mn, smaller than or equal to 0.035% of P, smaller than or equal to 0.030% of S, 3.50-6.50% of Cr, 0.20-1.0% of Ni, 3.0-6.0% of Mo, 2.0-6.0% of V, 2.0-6.0% of W, 0.5-2.0% of Nb and the balance Fe and impurities, and a middle layer and a core portion including, 2.95-3.4% of C, 2.0-3.0% of Si, 0.4-1.0% of Mn, smaller than or equal to 0.05% of P, smaller than or equal to 0.035% of S, 0.01-0.04% of Re, 0.03-0.08% of Mg, smaller than or equal to 0.15% of Cr, smaller than or equalto 0.5% of Ni, smaller than or equal to 0.1% of Mo, smaller than or equal to 0.1% of Cu, and the balance Fe and impurities. The high abrasion resisting centrifugal composite high-speed steel roll hasthe characteristics of high hardness, high abrasion resistance, high heat intensity and high red hardness.

Description

technical field [0001] The invention relates to a metallurgical roll, in particular to a high wear-resistant centrifugal composite high-speed steel roll. Background technique [0002] Improving the inherent quality and dimensional accuracy of rolled products and reducing production costs have always been the unremitting goals of steel rolling workers. The application of new rolling technology can effectively improve the quality of rolled products, but at the same time, it also puts forward higher requirements on the quality of rolls, especially the wear resistance, strength and toughness of rolls. Changing the material of the roll is an important measure to improve the performance of the roll. The development trend of the material of the roll is to widely use alloying elements and gradually increase the degree of alloying to form more hard carbides on the surface of the roll body and improve the wear resistance of the roll. In order to meet this requirement, at the end of t...

Claims

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Application Information

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IPC IPC(8): C22C38/02C22C38/04C22C38/44C22C38/46C22C38/48C22C38/56C22C37/10C22C37/08C22C33/06C22C33/08B22D19/16B22D13/02C21D1/18C21D9/38B21B27/02
CPCB21B27/02B22D13/02B22D19/16C21D1/18C21D9/38C22C33/06C22C33/08C22C37/08C22C37/10C22C38/002C22C38/02C22C38/04C22C38/44C22C38/46C22C38/48C22C38/56
Inventor 刘士臣周雪普李素玲洪立明
Owner 唐山市国宗元裕龙重工有限公司
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