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Surface insulating layer treating process for roller bearing

A processing technology and rolling bearing technology, which is applied in the direction of metal material coating technology, coating, molten spraying, etc., can solve the problems of bearing size change, large volume, and increased equipment investment

Inactive Publication Date: 2005-12-14
LUOYANG BEARING GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the disadvantages of these two methods are: first, the volume of the equipment is huge, which increases the investment of the equipment; second, the size of the bearing will change due to the fit.

Method used

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  • Surface insulating layer treating process for roller bearing
  • Surface insulating layer treating process for roller bearing
  • Surface insulating layer treating process for roller bearing

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Embodiment Construction

[0020] In conjunction with accompanying drawing, provide embodiment of the present invention as follows:

[0021] As shown in the drawings, the processing technology of the present invention is to evenly and firmly coat the insulating coating 1 on the inner surface of the inner ring 2 and the outer surface of the outer ring 3 of the bearing to form an insulating bearing used with the motor.

[0022] It includes the following specific steps:

[0023] 1. Use the emulsion cleaning method (national standard) to degrease and purify the steel substrate, use the brand LC-84 low-temperature degreasing agent, use LC-84 degreasing agent 15-25ml / L, sodium pyrophosphate 2-5g / L, Sodium 1-5g / L, immersion temperature 25-40℃, immersion time 3-5min;

[0024] 2. For all parts that do not require surface pretreatment, use steel strips or copper strips for shielding protection;

[0025] 3. Use the pressure sandblasting method with a pressure of 0.34-0.52MPa at the nozzle. The compressed air use...

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Abstract

The surface insulating layer preparing process for roller bearing is to form homogeneous and firm non-metal coating to the surface of bearing through plasma hot spraying process. The preparation process includes the following steps: degreasing the steel base of bearing; shielding the parts needing no surface treatment with steel or copper belt; sand blasting pre-treatment of the base with Ni-Al alloy powder; preparing coating material of alumina-titania alloy with alumina content of 3-13 wt% and size 200-360 / micron; spraying the coating material; sealing holes in coating; and final finishing treatment of the coating. The insulated roller bearing is used in motor mainly.

Description

Technical field [0001] The invention belongs to the bearing insulation processing technology, and mainly relates to a processing technology for the surface insulation layer of a rolling bearing, and the processed bearing is used as a matching motor. Background technique [0002] In recent years, with the advancement of science and technology, the operating environment and conditions of rolling bearings have become increasingly strict and diversified. Ordinary steel bearings have been difficult to meet the requirements of special working conditions. The reason for the premature failure of the supporting bearings of the motor is that the bearings cannot effectively prevent the erosion of the current during use. The typical damage is the pits and corrugated grooves on the rolling elements and raceways. When the instantaneous voltage exceeds 0.5V or the current density exceeds 0.1A / mm 2 , the bearing will fail. [0003] The countermeasures to solve the electric corrosion of be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/11C23C4/134
CPCF16C33/62
Inventor 王景夏李雅宁王黎峰马新志
Owner LUOYANG BEARING GROUP
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