Alloy material for bearing rolling body and preparation method thereof

A technology of alloy materials and rolling elements, which is applied in metal processing equipment, transportation and packaging, etc., can solve the problems of radial size, large vibration and noise, and high price, and achieve the effects of improving strength, enhancing hardness, and inhibiting grain growth Effect

Active Publication Date: 2019-07-30
NINGBO DAER MACHINERY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the rolling bearing has been standardized and serialized, but compared with the sliding bearing, its radial size, vibration and noise are larger, and the price is also higher.

Method used

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  • Alloy material for bearing rolling body and preparation method thereof

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preparation example Construction

[0039] A method for preparing an alloy material for a bearing rolling body, comprising the following steps:

[0040] Step S1. Mix the metal powders of the base material, add a lubricant, and place them in a cleaned ball mill tank (made of stainless steel). The ball mill tank is evacuated and filled with argon inert gas to prevent the powder from grinding during the ball milling process. Adhesive oxidation, ball milling the mixed powder, ball milling at 250r / min for 2 hours, the ball milling medium is alumina balls, the ball diameters are 10mm, 6mm and 3mm, and the ball-to-material ratio is 10:1;

[0041] Step S2, after the above-mentioned mixed powder is cooled to room temperature, add modified graphene oxide, and continue ball milling at 250r / min for 2h under the protection of argon (divided into two steps of ball milling, which can prevent graphene from being easily wrapped in the composite material) The surface of the metal particles makes it difficult for the metal particl...

Embodiment 1

[0048] An alloy material for a bearing rolling body, made of the following raw materials in parts by weight: 80 parts of base material, 9 parts of lubricant, and 6 parts of modified graphene oxide;

[0049] The alloy material is made by the following steps:

[0050] Step S1. Mix the metal powders of the base material, add lubricant, and place them in a cleaned ball mill tank. The ball mill tank is evacuated and filled with argon inert gas to prevent the powder from bonding and oxidation during the ball milling process. The mixed powder is ball milled for 2 hours at 250r / min, the ball milling medium is alumina balls, the ball diameters are 10mm, 6mm and 3mm, and the ball-to-material ratio is 10:1;

[0051] Step S2, after the above-mentioned mixed powder is cooled to room temperature, then add modified graphene oxide, and continue ball milling at 250r / min for 2h under the protection of argon;

[0052] Step S3, the mixed powder after ball milling is sintered under the sintering ...

Embodiment 2

[0055] An alloy material for a bearing rolling body, made of the following raw materials in parts by weight: 90 parts of a base material, 10 parts of a lubricant, and 6.5 parts of modified graphene oxide;

[0056] The alloy material is made by the following steps:

[0057] Step S1. Mix the metal powders of the base material, add lubricant, and place them in a cleaned ball mill tank. The ball mill tank is evacuated and filled with argon inert gas to prevent the powder from bonding and oxidation during the ball milling process. The mixed powder is ball milled for 2 hours at 250r / min, the ball milling medium is alumina balls, the ball diameters are 10mm, 6mm and 3mm, and the ball-to-material ratio is 10:1;

[0058] Step S2, after the above-mentioned mixed powder is cooled to room temperature, then add modified graphene oxide, and continue ball milling at 250r / min for 2h under the protection of argon;

[0059] Step S3, the mixed powder after ball milling is sintered under the sin...

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Abstract

The invention discloses an alloy material for a bearing rolling body. The alloy material is prepared from the following raw materials in parts by weight: 80-100 parts of a base material, 9-11 parts ofa lubricant and 6-7 parts of modified graphene oxide, wherein the base material comprises Ti powder, Al powder, Cr powder, Nb powder and Al2O3 powder. The invention also discloses a preparation method of the alloy material. The preparation method comprises the following steps: two-step grinding, plasma sintering and the like. By taking the Ti powder, Al powder, Cr powder, Nb powder and Al2O3 powder as the base material of the alloy, the alloy material is prepared by means of two-step grinding and plasma sintering by adding the lubricant and the modified graphene oxide. By adding the stretchedlaminar graphene oxide, the mechanical properties of hardness, strength and the like of the alloy material can be improved. The self-lubricating effect of the alloy material can be improved by meansof a synergistic effect of the lubricant and a graphene lubricating film. The alloy material is prepared into the bearing rolling body which is excellent in comprehensive performance.

Description

technical field [0001] The invention belongs to the technical field of bearing rolling body preparation, and in particular relates to an alloy material for a bearing rolling body and a preparation method thereof. Background technique [0002] Bearing is an important part of contemporary mechanical equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy. According to the different friction properties of moving elements, bearings can be divided into two categories: rolling bearings and sliding bearings. Among them, the rolling bearing has been standardized and serialized, but compared with the sliding bearing, its radial dimension, vibration and noise are larger, and the price is also higher. Rolling bearings are generally composed of four parts: outer ring, inner ring, rolling body and cage. As a part of the bearing structure, the rolling body plays a very significant role...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/05C22C14/00C22C1/10B22F1/00B22F3/105B22F9/04
CPCC22C1/05C22C14/00B22F9/04B22F3/105B22F2009/043B22F1/10
Inventor 刘正龙
Owner NINGBO DAER MACHINERY TECH CO LTD
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