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High quality bearing

A high-quality, bearing technology, applied in other chemical processes, chemical instruments and methods, etc., can solve the problems of difficult to meet the requirements of high-precision processes, the problem of ceramic bearing processing restricting development, increasing the cost of raw material consumption, etc., to improve the polishing effect. , The effect of reducing surface defects and low friction coefficient

Active Publication Date: 2019-11-01
山东华工轴承有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the bearing roller has defects, it will weaken the stability of the bearing, and even cause major safety accidents in serious cases; on the other hand, the occurrence of surface defects on the bearing roller will also greatly increase the consumption of raw materials and the cost of the enterprise
[0003] At present, the processing of ceramic bearings has been restricting its development
[0006] However, the surface defects of the rolling elements involved in the above-mentioned patents are still relatively obvious, and it is difficult to meet the requirements of high-precision technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A high-quality bearing, the bearing includes ceramic ball bearing rolling elements, and the ceramic ball bearing rolling elements are prepared by the following method:

[0040] S1 Preparation of ceramic raw materials: Mix the ceramic raw materials uniformly according to the proportion, pass through a 120-mesh sieve, and place them in a ball mill for ball milling; the ceramic raw materials include β-Si by weight percentage 3 N 4 80%, aluminum nitride 16%, boron nitride 3%, yttrium trioxide 0.5%, calcium fluoride 0.5%;

[0041] S2 pressing and forming: placing the powder obtained in step S1 in an abrasive tool and pressing it into a spherical shape by cold isostatic pressing;

[0042] S3 sintering: In a nitrogen atmosphere, put the powder in a mold and heat up to 1750°C in a sintering furnace, keep it for 3 hours, stop heating and then cool to room temperature with the furnace;

[0043] S4 Grinding and polishing: grinding and polishing the ceramic balls obtained in step S3 to obta...

Embodiment 2

[0063] A high-quality bearing, the bearing includes ceramic ball bearing rolling elements, and the ceramic ball bearing rolling elements are prepared by the following method:

[0064] S1 Preparation of ceramic raw materials: Mix the ceramic raw materials uniformly according to the proportion, pass through a 120-mesh sieve, and place them in a ball mill; the ceramic raw materials include β-Si in weight percentage 3 N 4 80%, aluminum nitride 16%, boron nitride 3%, yttrium trioxide 0.5%, calcium fluoride 0.5%;

[0065] S2 compression molding: placing the powder obtained in step S1 in an abrasive tool and compressing it into a spherical shape by cold isostatic pressing;

[0066] S3 sintering: In a nitrogen atmosphere, put the powder in a mold and heat up to 1750°C in a sintering furnace, keep it for 3 hours, stop heating and then cool to room temperature with the furnace;

[0067] S4 grinding and polishing: grinding and polishing the ceramic balls obtained in step S3 to obtain ceramic ball...

Embodiment 3

[0087] A high-quality bearing, the bearing includes ceramic ball bearing rolling elements, and the ceramic ball bearing rolling elements are prepared by the following method:

[0088] S1 Preparation of ceramic raw materials: the ceramic raw materials are mixed uniformly according to the proportion, passed through a 120-mesh sieve, and placed in a ball mill for ball milling; the ceramic raw materials include β-Si in weight percentage 3 N 4 80%, aluminum nitride 16%, boron nitride 3%, yttrium trioxide 0.5%, calcium fluoride 0.5%;

[0089] S2 compression molding: placing the powder obtained in step S1 in an abrasive tool and compressing it into a spherical shape by cold isostatic pressing;

[0090] S3 sintering: In a nitrogen atmosphere, put the powder in a mold and heat up to 1750°C in a sintering furnace, keep it for 3 hours, stop heating and then cool to room temperature with the furnace;

[0091] S4 grinding and polishing: grinding and polishing the ceramic balls obtained in step S3 t...

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Abstract

The invention relates to a high quality bearing. The high quality bearing comprises a ceramic ball bearing rolling element. The ceramic ball bearing rolling element is prepared from following steps: 1, ceramic raw material preparation, wherein ceramic raw materials are mixed to be uniform at a certain ratio, an obtained mixture is sieved using a 120 mesh sieve, and is subjected to ball milling ina ball milling machine; 2, pressing into balls, wherein a powder material obtained in step 1 is introduced into a grinding tool for pressing into balls using methods such as cold isostatic pressing; 3, sintering, wherein in nitrogen atmosphere, the powder material is introduced into a die for heating to 1750 DEG C in a sintering furnace, thermal insulation treatment is carried out for 3h, heatingis stopped, and cooling in furnace to room temperature is carried out; and 4, grinding and polishing. The prepared bearing is low in friction coefficient, few in defects, high in stability, and excellent in wear resistance, self lubricating performance, and rigidity, the adopted raw materials are simple, and raw material consumption and enterprise cost can be reduced.

Description

Technical field [0001] The invention relates to a high-quality bearing. Background technique [0002] As an important basic part in the machinery industry, rolling bearings are widely used in many fields of national industry such as aerospace, transportation, machinery manufacturing, etc. They have the function of supporting and reducing friction, and are essential for rotating machinery. One of the most easily damaged parts. Bearing rollers, as the most commonly used rolling elements in rolling bearings, play a role in transmitting force and bearing loads. The quality of the rollers will affect the performance, accuracy and service life of the bearing to a certain extent. When the bearing roller has defects, it will weaken the stability of the bearing, and even cause major safety accidents in severe cases; on the other hand, the surface defects of the bearing roller will also greatly increase the consumption of raw materials and the cost of the enterprise. . [0003] At present...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/584C04B35/626C09K3/14
CPCC04B35/584C04B35/6261C04B2235/3225C04B2235/386C04B2235/3865C04B2235/445C09K3/1436
Inventor 不公告发明人
Owner 山东华工轴承有限公司