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Long-life bearing steel and manufacturing method thereof

A manufacturing method and technology of bearing steel, applied in the field of rolling steel manufacturing, can solve the problems that bearings cannot meet the requirements of use, etc.

Inactive Publication Date: 2017-05-10
龙南天宇蓝龙新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In order to solve the problem that the bearings in the prior art cannot meet the requirements of use, the present invention provides a high-life bearing steel and its manufacturing method. By optimizing and adjusting the content of each element in the bearing steel, the bearing steel can effectively ensure that the bearing steel has a longer life. , and can meet the requirements of use, and further provide a manufacturing method for the high-life bearing steel

Method used

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  • Long-life bearing steel and manufacturing method thereof
  • Long-life bearing steel and manufacturing method thereof

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Embodiment Construction

[0027] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the Some, but not all, embodiments are invented. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0028] (1) Design index setting of high-life bearing steel

[0029] In this embodiment, in order to ensure that the manufactured high-life bearing steel can obtain the following advantages, the composition of the bearing steel is designed:

[0030] (1) It has high elastic limit, tensile strength and contact fatigue strength;

[0031] (2) It has high hardenability and necessary...

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Abstract

The invention provides long-life bearing steel. The long-life bearing steel comprises 0.96wt%-1.03wt% of carbon, 0.15wt%-0.35wt% of silicon, 0.25wt%-0.45wt% of manganese, 1.4wt%-1.6wt% of chromium, 0.05wt%-0.09wt% of nickel, 0.02wt%-0.08wt% of molybdenum, 0.007wt%-0.030wt% of aluminum, 0.04wt%-0.08wt% of copper, 0.002wt%-0.030wt% of yttrium, less than 0.01wt% of phosphorus, less than 0.008wt% of sulphur, less than 0.0025wt% of titanium, less than 0.0008wt% of oxygen, less than 0.012wt% of arsenic, less than 0.002wt% of tin, less than 0.005wt% of antimony, less than 0.002wt% of lead, less than 0.001wt% of calcium, and the balance iron. The long-life bearing steel has better performance by strictly controlling the content of the elements in the bearing steel.

Description

technical field [0001] The invention relates to the technical field of rolling steel manufacturing, in particular to a high-life bearing steel and a manufacturing method thereof. Background technique [0002] Traditional heavy equipment manufacturing industries such as precision machine tools, metallurgical equipment, heavy equipment, and high-end automobile manufacturing, as well as emerging strategic industries such as wind power generation, high-speed railways, and aerospace, are important pillar industries of my country's industrial system, and the products used or manufactured in these industries Bearings are often used in equipment. Therefore, the service life and reliability of bearings will determine the performance of equipment to a certain extent. [0003] At the same time, with the rapid development of science and technology in our country, in many high-end fields, such as aviation, aerospace, transportation, energy (wind power, solar energy, nuclear power), marine...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/44C22C38/06C22C38/42C21D8/06C21D1/32
CPCC21D1/32C21D8/065C21D2211/003C21D2211/005C21D2211/009C22C38/005C22C38/02C22C38/04C22C38/06C22C38/42C22C38/44
Inventor 王宇远张成连
Owner 龙南天宇蓝龙新材料有限公司
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