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Alloy steel for manufacturing bearings

A technology of alloy steel and bearings, applied in the field of alloy steel, can solve the problems of failure to meet the needs of equipment work, changes in wear resistance, poor corrosion resistance, etc., to achieve cost savings, good surface wear resistance, and extended maintenance. effect of cycle

Inactive Publication Date: 2014-10-15
新昌县南明街道锦泰机械厂
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Problems solved by technology

[0003] Bearing alloy steel belongs to high-carbon alloy steel. The current bearing alloy steel has high hardness and strong wear resistance, but the wear resistance will change in special environments, which cannot meet the needs of equipment work. In addition, there is corrosion resistance Disadvantages of poor sex

Method used

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Embodiment Construction

[0008] An alloy steel used to manufacture bearings, comprising the following components in weight percent: molybdenum: 0.22-0.29; carbon: 0.36-0.45; manganese: 0.44-0.80; copper: less than 0.33; silicon: 0.16-0.23; sulfur: less than 0.05 ; Phosphorus: less than 0.03; chromium: less than 0.25; nickel: less than 0.25; unavoidable impurities less than 0.3; the balance is iron.

[0009] As a preference, an alloy steel used to manufacture bearings includes the following components in weight percent: molybdenum 0.24-0.27; carbon: 0.38-0.43; manganese: 0.50-0.70; copper: less than 0.30; silicon: 0.18-0.21; sulfur : less than 0.045; phosphorus: less than 0.025; chromium: less than 0.20; nickel: less than 0.20; unavoidable impurities less than 0.3; the balance is iron.

[0010] The invention has high strength and wear resistance, good cold deformation and good surface wear resistance, improves the overall quality and service life of bearing products, thereby effectively improving the c...

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Abstract

The invention relates to an alloy steel for manufacturing bearings. The alloy steel is characterized by comprising the following components in parts by weight: 0.22-0.29 part of molybdenum, 0.36-0.45 part of carbon, 0.44-0.80 part of manganese, less than 0.33 part of copper, 0.16-0.23 part of silicon, less than 0.05 part of sulfur, less than 0.03 part of phosphorus, less than 0.25 part of chromium, less than 0.25 part of nickel, less than 0.3 parts of unavoidable impurities and the balance of iron. The alloy steel provided by the invention has higher strength, is good in wear resistance, excellent in cold deformation shaping and good in surface wear resistance, and improves the whole quality and service life of the bearing product, thereby effectively improving the continuous operation time of equipment, lengthening the maintenance period of the equipment, and reducing the use cost of the equipment.

Description

technical field [0001] The invention relates to an alloy steel used for manufacturing bearings. Background technique [0002] Alloy steel has a history of more than 100 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 use of steel, the machinery manufacturing industry needed to solve the processing and cutting of steel. Problem, in 1868 the British R.F.Mushet invented self-hardening steel with a composition of 2.5%Mn-7%W, which increased 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, some industrial countries later switched to nickel Steel (3.5%Ni) for building long-span bridges. At the same time, some countries also use nickel steel to build warships. With the developm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/60C22C38/12C22C38/22C22C38/44C22C38/16
Inventor 刘立军
Owner 新昌县南明街道锦泰机械厂
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