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Novel bearing steel

A kind of bearing steel, a new type of technology, applied in the field of bearing steel, can solve the problems of bearing steel steel quality, poor performance stability, hard toughness of bearing steel that cannot meet the demand, poor appearance quality, etc., and achieve the effect of improving product quality

Inactive Publication Date: 2016-06-08
赵俭
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(2) The quality and performance stability of bearing steel is poor, and the appearance quality is not good
(3) The degree of specialized production of bearing steel is low
The problem with this invention is that air holes are often generated in the steel during the carburizing process, so that the strength and toughness of the bearing steel cannot meet the demand

Method used

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  • Novel bearing steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Example 1: carbon: 0.15%; chromium: 0.05%; sulfur: 0.001%; ​​nickel: 3.20%; aluminum: 0.015%; vanadium: 0.04%; Phosphorus ≤ 0.020%; the balance is Fe and unavoidable impurities.

Embodiment 2

[0011] Example 2: carbon: 0.18%; chromium: 0.15%; sulfur: 0.005%; nickel: 3.10%; aluminum: 0.020%; vanadium: 0.04%; Phosphorus ≤ 0.020%; the balance is Fe and unavoidable impurities.

Embodiment 3

[0012] Example 3: carbon: 0.16%; chromium: 0.25%; sulfur: 0.001%; ​​nickel: 3.50%; aluminum: 0.040%; vanadium: 0.08%; Phosphorus ≤ 0.020%; the balance is Fe and unavoidable impurities.

[0013] Table 1 Performance comparison of various low-alloy steels.

[0014]

[0015] Experiments show that the bearing steel shown in the invention has good mechanical properties and fatigue strength, and at the same time reduces the overheating sensitivity and decarburization tendency of the steel.

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PUM

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Abstract

The invention discloses a formula of novel bearing steel, relates to a kind of novel bearing steel and belongs to the field of metal materials and bearings. In order to solve the problems that crystalline grains are coarse and matching of toughness is poor, especially meet the requirements for heavy-duty bearings, the formula of the novel bearing steel is provided. The novel bearing steel comprises, by mass, 0.12-0.18% of carbon, 0.05-0.25% of chromium, 0.001-0.005% of sulfur, 3.10-3.50% of nickel, 0.015-0.040 % of aluminum, 0.04-0.08% of vanadium, 0.5-1.0% of manganese, more than or equal to 2% of aluminum / nitrogen, less than or equal to 0.0010% of oxygen, less than or equal to 0.020% of phosphorus, and the balance Fe and inevitable impurities.

Description

technical field [0001] The invention relates to a novel bearing steel, which belongs to the field of metal materials and bearings. Background technique [0002] Bearings are devices that allow limited relative motion between two parts. Rolling element bearings consist of inner and outer raceways and a large number of rolling elements (balls or rollers) arranged between them. For long-term reliability and performance, it is important that the different parts have a high resistance to rolling contact fatigue, wear and creep. With the rapid development of the machinery manufacturing industry, especially the automobile, aviation, and atomic energy industries, the performance requirements for bearings are constantly increasing, such as special bearings that need to work under harsh conditions such as high temperature, high speed, high load, and corrosion resistance. In order to meet the needs of these bearings, countries have successively developed and developed a number of new...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/46
Inventor 赵俭
Owner 赵俭
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