Alloy steel formula for bearing

A technology of alloy steel and formula, which is applied in the field of alloy steel formula for bearings, can solve problems such as changes in wear resistance, failure to meet the needs of equipment work, and poor corrosion resistance, so as to achieve good surface wear resistance and save use costs , the effect of extending the maintenance cycle

Inactive Publication Date: 2014-05-21
俞政
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Problems solved by technology

[0004] Bearing alloy steel belongs to high-carbon alloy steel. The current bearing alloy steel has high hardness and strong wear resistance, but the wear resis

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[0009] The present invention will be further illustrated below in conjunction with specific embodiments, and it should be understood that the following specific embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0010] An alloy steel formula for bearings disclosed by the present invention has the weight percent of each component (wt%): carbon: 0.37-0.45; molybdenum: 0.24-0.29; zirconium: 0.33-0.39; silicon: 0.17-0.37; manganese: 0.50-0.80; sulfur: less than 0.04; phosphorus: less than 0.05; chromium: less than or equal to 0.25; nickel: less than 0.25; copper: less than 0.25; other inevitable impurities: less than 0.1; the balance is iron. Steel die forging temperature is 1200±50°C, final forging temperature is 950-1050°C, air-cooled to 800-900°C in non-oxidizing medium after final forging, then water-cooled to room temperature, sampling 10 groups of 40*40mm column samples, the average of the samples ...

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Abstract

The invention discloses an alloy steel formula for a bearing. The alloy steel formula comprises the following components in percentage by weight: 0.37-0.45 percent of carbon, 0.24-0.29 percent of molybdenum, 0.33-0.39 percent of zirconium, 0.17-0.37 percent of silicon, 0.50-0.80 percent of manganese, less than 0.4 percent of sulfur, less than 0.05 percent of phosphorus, less than or equal to 0.25 percent of chromium, less than 0.25 percent of nickel, less than 0.25 percent of copper, less than 0.1 percent of other inevitable impurities and the balance of iron. The alloy steel has high strength and wear resistance, high cold deformation shaping and high surface abrasion resistance, the overall quality of the bearing product is improved, and the service life is prolonged, so that the continuous operating time of equipment is effectively improved, the maintenance period of the equipment is prolonged, and the use cost of the equipment is saved.

Description

technical field [0001] The invention relates to an alloy steel formula for bearings, in particular. Background technique [0002] Alloy steel has a history of more than one hundred years. The industrial use of alloy steel was about the second half of the 19th century. At that time, due to the increasing production and usage of steel, the machinery manufacturing industry needed to solve the problem of steel processing and cutting. In 1868, the British R.F.Mushet invented self-hardening steel with a composition of 2.5%Mn-7%W. Increase the cutting speed to 5 m / min. With the development of commerce and transportation, a bridge with a span of 158.5 meters was built on the Mississippi River in the United States in 1870 with chromium steel (1.5-2.0%Cr); due to difficulties in processing components, later, some industrial countries switched to nickel Steel (3.5%Ni) is used to build long-span bridges. At the same time, some countries also use nickel steel to build warships. ...

Claims

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Application Information

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IPC IPC(8): C22C38/50C22C38/28C22C38/14
Inventor 俞政
Owner 俞政
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