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High-speed bearing steel and preparation method thereof

A high-speed bearing and steel retention technology, applied in the field of iron and steel metallurgy, can solve problems such as high price, and achieve the effects of improving hardenability, refining grains, and increasing hardness

Inactive Publication Date: 2017-01-04
DEQING TIANMA BEARING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] According to these performance requirements of the material, no suitable material meeting the above requirements has been found in China, and there are materials meeting the above requirements abroad, but the price is very expensive, and the material cost of the bearing ring is dozens of times the price of the original set of bearings. even hundreds of times

Method used

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  • High-speed bearing steel and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A high-speed bearing steel comprising the following components by weight percentage:

[0036] Carbon 0.4-0.45%

[0037] Silicon 0.9-1%

[0038] Manganese 0.95-1.05%

[0039] Phosphorus less than 0.01%

[0040] Sulfur less than 0.005%

[0041] Chromium 1.4-1.6%

[0042] Molybdenum 0.85-0.95%

[0043] Copper less than 0.1%

[0044] Aluminum 0.085-0.1%

[0045] the rest is iron;

[0046] The high-speed bearing steel has an oxygen content lower than 15PPM;

[0047] The high-speed bearing steel has a hydrogen content lower than 2PPM.

[0048] The preparation method of the above-mentioned high-speed bearing steel comprises the following steps in turn:

[0049] In the first step, the basic steel 42CrMo is initially smelted in the EBT electric furnace; after the raw materials are melted, coke powder is sprayed into the foamed slag, and the height of the slag is 550-650mm, and the slag is flowed in time and lime is added to Reduce the phosphorus content during slag ta...

Embodiment 2

[0055] A high-speed bearing steel comprising the following components by weight percentage:

[0056] Carbon 0.4-0.45%

[0057] Silicon 0.9-1%

[0058] Manganese 0.95-1.05%

[0059] Phosphorus less than 0.01%

[0060] Sulfur less than 0.005%

[0061] Chromium 1.4-1.6%

[0062] Nickel 0.4-0.5%

[0063] Molybdenum 0.85-0.95%

[0064] Copper less than 0.1%

[0065] Aluminum 0.085-0.1%

[0066] the rest is iron;

[0067] The high-speed bearing steel has an oxygen content lower than 15PPM;

[0068] The high-speed bearing steel has a hydrogen content lower than 2PPM.

[0069] Compared with Example 1, nickel element was added.

[0070]In the first step, the basic steel 42CrMo is initially smelted in the EBT electric furnace; after the raw materials are melted, coke powder is sprayed into the foamed slag, and the height of the slag is 550-650mm, and the slag is flowed in time and lime is added to Reduce the phosphorus content during slag tapping, and reduce the phosphorus t...

Embodiment 3

[0076] A high-speed bearing steel comprising the following components by weight percentage:

[0077] Carbon 0.4-0.45%

[0078] Silicon 0.9-1%

[0079] Manganese 0.95-1.05%

[0080] Phosphorus less than 0.01%

[0081] Sulfur less than 0.005%

[0082] Chromium 1.4-1.6%

[0083] Molybdenum 0.85-0.95%

[0084] Copper less than 0.1%

[0085] Aluminum 0.085-0.1%

[0086] Vanadium 0.08-0.15%

[0087] Niobium 0.08-0.15%

[0088] the rest is iron;

[0089] The high-speed bearing steel has an oxygen content lower than 15PPM;

[0090] The high-speed bearing steel has a hydrogen content lower than 2PPM.

[0091] Compared with Example 2, vanadium and niobium elements are added.

[0092] In the first step, the basic steel 42CrMo is initially smelted in the EBT electric furnace; after the raw materials are melted, coke powder is sprayed into the foamed slag, and the height of the slag is 550-650mm, and the slag is flowed in time and lime is added to Reduce the phosphorus content...

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Abstract

The invention discloses high-speed bearing steel and a preparation method thereof. The high-speed bearing steel comprises the following components in percentages by weight: 0.4-0.45% of carbon, 0.9-1% of silicon, 0.95-1.05% of manganese, less than 0.01% of phosphorus, less than 0.005% of sulfur, 1.4-1.6% of chromium, 0.4-0.5% of nickel, 0.85-0.95% of molybdenum, less than 0.1% of copper, 0.085-0.1% of aluminum, 0.08-0.15% of vanadium, 0.08-0.15% of niobium and the balance iron. The oxygen content of the high-speed bearing steel is lower than 15PPM. The hydrogen content of the high-speed bearing steel is lower than 2PPM. The high-speed bearing steel disclosed by the invention is low in production cost and meets various mechanical performance requirements.

Description

technical field [0001] The invention belongs to the technical field of iron and steel metallurgy; in particular, it relates to a new type of high-speed bearing steel TMB-012, which is mainly suitable for high-speed air-conditioning compressor bearings, automobile gearbox bearings, vibrating screen bearings and the like. Background technique [0002] In order to improve the working conditions of long life, high speed, impact resistance, and alternating load resistance of bearings such as high-speed air-conditioning compressors, automobile gearboxes, and vibrating screens, the development department consulted a large number of technical materials. Bearings, high-speed upsetting machine bearings, vibrating screen bearings, etc., have the characteristics of high speed, long service life, need to bear impact loads, and the working environment may be outdoors, etc. The mechanical performance requirements of the materials required for the above-mentioned bearings are proposed; [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/18C22C38/02C22C38/04C22C38/08C22C38/12C22C38/16C22C38/06C22C33/06C21C7/10C21C7/072
CPCC22C38/18C21C7/072C21C7/10C22C33/06C22C38/02C22C38/04C22C38/06C22C38/08C22C38/12C22C38/16
Inventor 时大方陈康胤刘国仓谢维兵
Owner DEQING TIANMA BEARING CO LTD
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