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Anodic oxidation protection method for bearing surface

A technology of anodic oxidation and bearing surface, applied in anodic oxidation and other directions, can solve problems such as fatigue failure, and achieve the effects of delaying fatigue failure, high hardness and high compactness

Active Publication Date: 2015-03-04
WUHU JINLONG MOLD FORGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem of fatigue failure caused by long-term rolling friction with balls on the inner surface of the existing bearing, the present invention provides an anodic oxidation protection method for the bearing surface, which obtains a hard oxide film by anodizing the inner surface of the bearing , so as to improve its wear resistance and delay the occurrence of bearing fatigue failure

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0023] A method for protecting a bearing surface from anodic oxidation, comprising the following steps:

[0024] (1) Electrolyte preparation:

[0025] The electrolyte is composed of 15% sulfuric acid, 4% chromic acid, and 3% oxalic acid;

[0026] (2) Preparation of bearing material:

[0027] After finishing the bearing, wash it;

[0028] (3) Oxidation treatment:

[0029] Put the bearing into the electrolyte, electrify it, the electrification voltage is 220V, and heat the electrolyte to 60°C, and the oxidation treatment time is 10min;

[0030] (4) Post-processing:

[0031] Take the bearing out of the acid solution, rinse it with clean water, and let it dry.

Embodiment 2

[0033] A method for protecting a bearing surface from anodic oxidation, comprising the following steps:

[0034] (1) Electrolyte preparation:

[0035] The electrolyte is composed of 23% sulfuric acid, 11% chromic acid, and 8% oxalic acid;

[0036] (2) Preparation of bearing material:

[0037] After finishing the bearing, wash it;

[0038] (3) Oxidation treatment:

[0039] Put the bearing into the electrolyte, electrify it, the electrification voltage is 220V, and heat the electrolyte to 60°C, and the oxidation treatment time is 15min;

[0040] (4) Post-processing:

[0041] Take the bearing out of the acid solution, rinse it with clean water, and let it dry.

Embodiment 3

[0043] A method for protecting a bearing surface from anodic oxidation, comprising the following steps:

[0044] (1) Electrolyte preparation:

[0045] The electrolyte is composed of 18% sulfuric acid, 7% chromic acid, and 6% oxalic acid;

[0046] (2) Preparation of bearing material:

[0047] After finishing the bearing, wash it;

[0048] (3) Oxidation treatment:

[0049] Put the bearing into the electrolyte, electrify it, the electrification voltage is 220V, and heat the electrolyte to 60°C, and the oxidation treatment time is 13min;

[0050] (4) Post-processing:

[0051] Take the bearing out of the acid solution, rinse it with clean water, and let it dry.

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PUM

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Abstract

The invention discloses an anodic oxidation protection method for a bearing surface and belongs to the technical field of machine manufacturing. The method comprises the processing steps: (1) preparing an electrolyte; (2) preparing a bearing material; (3) carrying out oxidation treatment; (4) carrying out after-treatment. According to the method, the problem of fatigue failure caused by long-time rolling friction between internal surfaces of the existing bearings and rolling balls is solved; the method has the advantages of simplicity, low cost and easiness in processing.

Description

technical field [0001] The invention belongs to the technical field of mechanical manufacturing, and more specifically relates to an anodic oxidation treatment method for a bearing surface. Background technique [0002] The main failure mode of engineering materials is surface failure, including wear, corrosion, surface damage, etc., and general fatigue fracture failure also starts from the surface. To make the material both inside and outside have the ability to resist surface failure, it adds technical difficulty to the manufacturing process and is not economical. While the original performance of the material body is maintained, it is of positive economic significance to resist its failure through surface treatment. [0003] Bearings are widely used in the field of machinery. Commonly used materials for bearing manufacturing include soft matrix hard point bearing alloys and hard matrix soft point bearing alloys. For hard matrix soft point bearing alloys, high-tin alumin...

Claims

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Application Information

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IPC IPC(8): C25D11/06
CPCC25D11/06
Inventor 李大志
Owner WUHU JINLONG MOLD FORGING
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