Method for manufacturing high-performance bearing retainer

A bearing cage and manufacturing method technology, applied in bearing components, shafts and bearings, mechanical equipment and other directions, can solve the problems of increased friction, wear and heat, wear, low operating temperature, etc., to improve service life and performance, process Well-arranged, high-quality finish

Inactive Publication Date: 2016-01-13
苏州市大力电器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the rolling bearing is working, the bearing heats up and wears due to sliding friction. Especially under high-temperature operating conditions, the action of inertial centrifugal force intensifies the friction, wear and heat generation. In severe cases, the cage will be burned or broken, resulting in the bearing not working properly.
Therefore, in addition to a certain strength, the material of the cage must also have good thermal conductivity, small friction factor, good wear resistance, strong impact toughness, and low density; the bearing cage is generally made of nylon and brass. The nylon cage has the advantages of light weight, strong elasticity, good sliding properties and marginal lubrication performance, but the operating temperature is low; the brass cage has the advantages of high strength, shock resistance, anti-acceleration and high-speed operation ability, etc., but the price is relatively higher
[0003] There are many kinds of bearing cages with various functions. Improving the structure and manufacturing method of bearing cages is conducive to improving its overall performance and service life. Based on the limitations of technology and materials, it is difficult for bearing cages to balance performance and cost, resulting in performance The levels are uneven and need to be further improved

Method used

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  • Method for manufacturing high-performance bearing retainer

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Experimental program
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Effect test

Embodiment 1

[0016] The specific manufacturing steps of the high-performance bearing cage mentioned in the present invention are as follows:

[0017] a) Material selection and preparation, the raw material is aluminum-magnesium alloy ZL101, and rare earth lanthanum is added to the raw material, and the amount of rare earth added is controlled at 4.5%;

[0018] b) heating and melting, the melting temperature of the raw material is controlled at 540°C-580°C, the heating rate is controlled at 70°C-80°C / min, and the raw material is melted and subjected to constant temperature treatment at 540°C for 2-2.5 hours;

[0019] c) Die-casting treatment, the equipment adopts hot chamber die-casting machine, the material of the mold is heat-resistant mold steel, and its preheating temperature is controlled at 300°C-320°C; during the die-casting process, the injection specific pressure is controlled at 40-45MPa, and the injection speed is controlled At 2cm / s, the holding time is controlled at 2 minutes; ...

Embodiment 2

[0022] The specific manufacturing steps of the high-performance bearing cage mentioned in the present invention are as follows:

[0023] a) Material selection and preparation, the raw material is aluminum-magnesium alloy ZL104, and rare earth lanthanum is added to the raw material, and the amount of rare earth added is controlled at 4.6%;

[0024] b) Heating and melting, the melting temperature of the raw material is controlled at 560°C-600°C, the heating rate is controlled at 80°C-90°C / min, after the raw material is melted, it is subjected to constant temperature treatment at a temperature of 550°C for 3 hours;

[0025] c) Die-casting treatment, the equipment adopts hot chamber die-casting machine, the material of the mold is heat-resistant mold steel, and its preheating temperature is controlled at 320°C-330°C; during the die-casting process, the injection specific pressure is controlled at 42-46MPa, and the injection speed is controlled At 2.5cm / s, the holding time is contr...

Embodiment 3

[0028] The specific manufacturing steps of the high-performance bearing cage mentioned in the present invention are as follows:

[0029] a) Material selection and preparation, the raw material is aluminum-magnesium alloy ZL101A, and rare earth rhenium is added to the raw material, and the amount of rare earth added is controlled at 4.5%;

[0030] b) Heating and melting, the melting temperature of the raw material is controlled at 550°C-570°C, the heating rate is controlled at 80°C-100°C / min, after the raw material is melted, it is subjected to constant temperature treatment at a temperature of 560°C for 3 hours;

[0031] c) Die-casting treatment, the equipment adopts hot chamber die-casting machine, the material of the mold is heat-resistant mold steel, and its preheating temperature is controlled at 310°C-320°C; during the die-casting process, the injection specific pressure is controlled at 40-44MPa, and the injection speed is controlled At 3cm / s, the holding time is control...

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Abstract

The invention discloses a method for manufacturing a high-performance bearing retainer. The manufacturing method comprises the following steps of a, material selection and preparation, b, heating and melting, c, pressure casting and d, post-processing of finished products. According to the method for manufacturing the high-performance bearing retainer, arrangement of the procedures is reasonable, the process is simple and convenient, and the cost is moderate; the manufactured retainer has the advantages of being high in strength, high in heat dissipation capacity, high in surface quality and the like; high-speed operation and low losses of rolling bodies can be ensured, the service life of the retainer is effectively prolonged, and the performance of the retainer is effectively improved.

Description

technical field [0001] The invention relates to a method for manufacturing a bearing cage, in particular to a method for manufacturing a bearing cage with excellent performance and moderate cost, and belongs to the technical field of mold hardware accessories. Background technique [0002] The bearing cage refers to the bearing part that partially wraps all or part of the rolling body and moves with it. It is used to isolate the rolling body, and usually guides the rolling body and keeps it in the bearing. The strength and stability of the bearing cage directly Affect the quality and service life of the bearing. When the rolling bearing is working, the bearing heats up and wears due to sliding friction. Especially under high temperature operating conditions, the action of inertial centrifugal force intensifies the friction, wear and heat. In severe cases, the cage will be burned or broken, resulting in the bearing not working properly. Therefore, in addition to a certain st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C33/30B23P15/00
Inventor 陈平
Owner 苏州市大力电器有限公司
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