Round steel used for bearings and a preparing method thereof

A round steel and bearing technology, applied in the field of bearing round steel and its preparation, can solve the problems of bearing outer shaft deformation, low quality of bearing round steel, short compression and wear resistance time, etc.

Inactive Publication Date: 2016-11-30
湖北立晋钢铁集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the bearing needs to bear great pressure and friction when it is working, so the bearing round steel is required to have higher hardness and wear resistance, as well as a high elastic limit, and more stringent requirements are required on the manufacturing method. Although some bearings made of bearing round steel can play the role of compressive resistance and wear resistance, the time of compressive resistance and wear resistance is short. After long-term use, the outer shaft of the

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A round steel for bearings and a preparation method thereof, comprising the following steps:

[0022] S1. Add 5 parts of steel scrap and iron oxide in sequence to the converter for smelting and melting, control the time of soft blowing and other measures during smelting, and blow argon throughout the smelting process to ensure the smelting effect of the converter;

[0023] S2. After the conventional smelting time is up, both steel scrap and iron are melted into a metal solution, and when the metal solution reaches the effect of mixing and stirring, add 3.5 parts of carbon, 8 parts of silicon dioxide, 1.1 parts of niobium, 0.7 parts of manganese, and 3.8 parts of copper Aluminum alloy powder and 0.45 parts of phosphorus are mixed and stirred, and heated while stirring to promote their fusion effect, and form a mixed metal liquid;

[0024] S3. Control the stirring speed when forming the mixed metal liquid, and continue to heat the mixed metal liquid. While heating, add 0....

Embodiment 2

[0030] A round steel for bearings and a preparation method thereof, comprising the following steps:

[0031] S1. Add 7.5 parts of steel scrap and iron oxide in sequence to the converter for smelting and melting, control the time of soft blowing and other measures during smelting, and blow argon throughout the smelting process to ensure the smelting effect of the converter;

[0032] S2. After the conventional smelting time is up, the steel scrap and iron are all melted into a metal solution. When the metal solution reaches the effect of mixing and stirring, add 4 parts of carbon, 9 parts of silicon dioxide, 1.4 parts of niobium, 0.9 parts of manganese, and 4.3 parts of copper. Aluminum alloy powder and 0.55 parts of phosphorus are mixed and stirred, and heated while stirring to promote their fusion effect, and form a mixed metal liquid;

[0033] S3. Control the stirring speed when forming the mixed metal liquid, and continue to heat the mixed metal liquid. While heating, add 0....

Embodiment 3

[0039] A round steel for bearings and a preparation method thereof, comprising the following steps:

[0040] S1. Add 10 parts of steel scrap and iron oxide in sequence to the converter for smelting and melting, control the time of soft blowing and other measures during smelting, and blow argon throughout the smelting process to ensure the smelting effect of the converter;

[0041] S2. After the conventional smelting time is up, both steel scrap and iron are melted into a metal solution, and when the metal solution reaches the effect of mixing and stirring, add 4.5 parts of carbon, 10 parts of silicon dioxide, 1.7 parts of niobium, 1.1 parts of manganese, and 4.8 parts of copper Aluminum alloy powder and 0.65 parts of phosphorus are mixed and stirred, and heated while stirring to promote their fusion effect, and form a mixed metal liquid;

[0042] S3. Control the stirring speed when forming the mixed metal liquid, and continue to heat the mixed metal liquid. While heating, add ...

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PUM

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Abstract

Round steel used for bearings is provided. The round steel comprises 3.5-4.5 parts of carbon, 8-10 parts of silicon dioxide, 1.1-1.7 parts of niobium, 0.7-1.1 parts of manganese, 3.8-4.8 parts of copper aluminum alloy powder, 0.45-0.65 part of phosphorus, 0.14-0.2 part of sulfur, 3.5-5.5 parts of high ferrochrome, 1.3-2.5 parts of nickel, 1.2-1.9 parts of titanium, 0.25-0.45 part of magnesium and 5-10 parts of waste steel, with the balance being ferric oxide. The round steel used for bearings and a preparing method are provided. The round steel has high strength and hardness, good wear resistance and good smelting effects when the round steel is used for manufacturing bearings, makes the bearing using efficiency higher and bearing rotation smoother, reduces secondary oxidation in a continuous casting process and allows steel inclusion to fully float and be absorbed.

Description

technical field [0001] The invention relates to the technical field of preparation of round steel for bearings, in particular to a round steel for bearings and a preparation method thereof. Background technique [0002] Bearing round steel is a steel type used to manufacture balls, rollers and sleeves of rolling bearings. It belongs to high-quality special steel and can also be used to make precision measuring tools, cold dies, machine tool screws and precision coupling parts of diesel engine oil pumps. In addition to making balls, bearing rings, etc., bearing round steel is sometimes used to make tools, such as dies, measuring tools, taps, etc. [0003] At present, the bearing needs to bear great pressure and friction when it is working, so the bearing round steel is required to have higher hardness and wear resistance, as well as a high elastic limit, and more stringent requirements are required on the manufacturing method. Although some bearings made of bearing round ste...

Claims

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Application Information

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IPC IPC(8): C22C38/12C22C38/02C22C38/04C22C38/06C22C38/16C22C38/60C22C38/18C22C38/08C22C38/14C22C33/06
CPCC22C38/12C22C33/006C22C33/06C22C38/002C22C38/02C22C38/04C22C38/06C22C38/08C22C38/14C22C38/16C22C38/18C22C38/60
Inventor 曹刚宋磊肖圆
Owner 湖北立晋钢铁集团有限公司
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