Electrolytic Polishing Method for Bearing Cage

A bearing cage and electrolytic polishing technology, applied in the field of electrolytic polishing, can solve problems such as insufficient guarantee of low noise level and rotational performance of air-conditioning compressors, unfavorable bearing vibration and noise level, and influence on the rotation accuracy of rolling elements, etc. Reduced strength, improved self-lubricating performance, convenient clamping and loading and unloading

CN102995099BActive Publication Date: 2015-08-12DEQING TIANMA BEARING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2015-08-12
Patent Text Reader

Abstract

The invention relates to an electrochemical polishing method for a bearing retainer. The electrochemical polishing method for the bearing retainer comprises the steps of: preparing, electrochemical polishing, electrolyte mixing, cleaning by using cold water, passivating, cleaning by using hot water, drying and rust preventing; the electrolyte is prepared from phosphoric acid, water and chromic anhydride in a volume ratio of 8:4:1; the temperature of the electrolyte is controlled to be below 40 DEG C; in the electrochemical polishing step, the current density is 35A / square decimeter, the working voltage is 8-10V, the distance between the negative pole of an electrochemical polishing machine and a processed workpiece is 5-10mm, and the electrochemical polishing time is 90s; the preparing step comprises the sub-steps of: preparing the electrolyte, adding the electrolyte in an electrolytic vessel, placing a lead plate in the electrolytic vessel, connecting the lead plate and the negative pole of the electrochemical polishing machine, and preparing the processed workpiece; and the step of preparing the processed workpiece comprises the following sub-steps of: performing oil removing and cleaning on the processed workpiece, cleaning by using hot water, cleaning by using cold water, hanging on a hanger, and connecting the processed workpiece with the positive pole of the electrochemical polishing machine. According to the electrochemical polishing method, the clamping as well as the material charging and discharging are convenient, the occupying area is small, the cost is low, the burr removing effect is good, the labor intensity is obviously reduced, and the time and the labor are saved.
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Description

technical field

[0001] The patent of the present invention relates to an electrolytic polishing method for a bearing cage, in particular to an electrolytic polishing method for a special-type short cylindrical roller bearing cage. Background technique

[0002] A bearing is a component used in a rotating mechanism to support, reduce friction and bear loads. The bearing is specially designed for air-conditioning compressors. Due to its small cross-section, high bearing capacity and small deformation, it is suitable for high-speed operation, low vibration and quiet occasions. At the same time, the product has a large radial load-bearing capacity, and the rollers and raceways Linear contact, suitable for shock loads, long life. This product is widely used in air-conditioning compressors because of its simple structure, compact size, high strength, strong bearing capacity, high rated speed and high precision. At present, most of the special-type products are imported or a small...

Examples

Embodiment Construction

[0013] The invention patent implements the electrolytic polishing method of the bearing cage. The equipment used includes an electrolytic polishing machine, a cooling water circulation pool, a sufficient amount of electrolyte (mainly phosphoric acid liquid), a sufficient amount of saponification cleaning solution (oil removal and cleaning link), Sufficient amount of hot water (hot water cleaning link), sufficient amount of cold water (cold water cleaning link), sufficient amount of passivation solution (passivation link), sufficient amount of antirust solution (rust prevention link), etc.

[0014] The electrolytic polishing method of the bearing cage in the embodiment of the present invention includes the following steps: preparation step → electrolytic polishing → stirring the electrolyte → cold water washing (60s) → passivation (prepared with benzotriazole and clear water with a volume ratio of 1.85:10 passivation solution, and the passivation time is 60s) → hot water washing...