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Steel for rolling mill bearing

A technology of steel for bearings and rolling mills, applied in the field of steels for rolling mill bearings, can solve the problems that have not been involved in solving high-strength and toughness bearing steels, bearings are easily polluted, and the working environment is harsh

Inactive Publication Date: 2014-05-14
锡山区鹅湖慧盾机械厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(2) The working environment is harsh. When the rolling mill is rolling, the rolls must be cooled with water, and there is splashing of iron oxide scales, and the bearings are easily polluted
[0005] The above-mentioned patents involve technologies for improving rolling fatigue performance and specific applicable performance, but do not involve solving the problem of manufacturing high-strength and toughness bearing steel suitable for heavy loads and high impact conditions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A steel for rolling mill bearings, the chemical composition of the steel consists of the following components in weight percentage: C: 1.05, Si: 0.5, Mn: 1.3, Mo: 1.3, V: 0.2, Cr: 1.4, Ni: 0.4, Cu: 0.4, S≤0.015, P≤0.015, Ti: 0.02, [O]≤15×10 -4 , [H]≤2×10 -4 , the remainder being Fe and unavoidable impurities.

Embodiment 2

[0018] A steel for rolling mill bearings, the chemical composition of the steel consists of the following components in weight percentage: C: 1.15, Si: 0.3, Mn: 1.5, Mo: 1.1, V: 0.4, Cr: 1.2, Ni: 0.6, Cu: 0.2, S≤0.015, P≤0.015, Ti: 0.02-0.04, [O]≤15×10 -4 , [H]≤2×10 -4 , the remainder being Fe and unavoidable impurities.

Embodiment 3

[0020] A steel for rolling mill bearings, the chemical composition of the steel consists of the following components in weight percentage: C: 1.08, Si: 0.45, Mn: 1.35, Mo: 1.25, V: 0.25, Cr: 1.35, Ni: 0.45, Cu: 0.35, S≤0.015, P≤0.015, Ti: 0.025, [O]≤15×10 -4 , [H]≤2×10 -4 , the remainder being Fe and unavoidable impurities.

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PUM

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Abstract

The invention discloses steel for a rolling mill bearing. The steel is composed of the following chemical components in percentage by weight: 1.05-1.15% of C, 0.3-0.5% of Si, 1.3-1.5% of Mn, 1.1-1.3% of Mo, 0.2-0.4% of V, 1.2-1.4% of Cr, 0.4-0.6% of Ni, 0.2-0.4% of Cu, less than or equal to 0.015% of S, less than or equal to 0.015% of P, 0.02-0.04% of Ti, less than or equal to 15*10<-4> of O, less than or equal to 2*10<-4> of H and the balance of Fe and unavoidable impurities.

Description

technical field [0001] The invention relates to the technical field of iron and steel metallurgy, in particular to steel for rolling mill bearings. Background technique [0002] At present, the rolling mill is developing towards high speed, heavy load, high strength, high rigidity, high precision, continuous rolling and automation. The rolling mill bearing is a key part of the rolling mill, which is directly related to the production efficiency, product quality and production cost of the rolling mill. Compared with general-purpose bearings, rolling mill bearings have the following characteristics: (1) The working load is large. Generally speaking, the rolled piece is rolled when it is bitten, that is, the load is suddenly established, so the impact load is Bearing load characteristics. Generally, the unit pressure of rolling mill bearings is 2-4 times higher than that of general-purpose bearings, and the pv value (the product of bearing unit pressure and line speed) is 3-20...

Claims

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Application Information

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IPC IPC(8): C22C38/50F16C33/00
Inventor 诸金平
Owner 锡山区鹅湖慧盾机械厂
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