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A kind of preparation method of bearing cage material and the preparation method of bearing cage

A technology for bearing cages and raw materials, which is applied in the direction of shafts and bearings, bearing components, mechanical equipment, etc., can solve the limitations of large-scale application of polyimide materials, high cost of polyimide cage materials, easy loss of molds, etc. Problems, to achieve good economic benefits, low cost, high molding efficiency

Active Publication Date: 2021-03-09
LUOYANG BEARING RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Generally, when the mold is used to make polyimide cage materials, the hot pressing process is usually used. Although the material cost is reduced, this process has disadvantages such as long production cycle, high energy consumption, low efficiency, and easy loss of the mold. For micro For small-sized bearings, the cost of raw materials is relatively low, and the material cost of polyimide cages made by this process is relatively high, which limits the large-scale application of polyimide materials in the field of cages

Method used

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  • A kind of preparation method of bearing cage material and the preparation method of bearing cage
  • A kind of preparation method of bearing cage material and the preparation method of bearing cage
  • A kind of preparation method of bearing cage material and the preparation method of bearing cage

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preparation example Construction

[0028] The preparation method of the bearing cage material provided by the invention comprises the following steps:

[0029] 1) Provide raw materials whose main component is polyimide;

[0030] 2) The raw material is hot-pressed to form a plate-shaped polyimide material, and then the plate-shaped polyimide material is made into a rod shape to obtain the product.

[0031] Preferably, the polyimide used is thermoplastic polyimide. The thermoplastic polyimide is selected from one of monoether anhydride polyimide and bisether anhydride polyimide. The raw material may only contain polyimide, or may contain other additives. Generally, the mass proportion of polyimide is not less than 60%. When the mixture contains other additives besides polyimide, the prepared plate polyimide material is a plate polyimide composite material.

[0032] In order to further enhance the tensile strength and wear resistance of the material, preferably, the particle size of the raw material is not less...

Embodiment 1

[0068] The preparation method of the bearing cage material of the present embodiment comprises the following steps:

[0069] 1) Dry the thermoplastic polyimide, reinforcing agent and lubricant separately, pass through a 200-mesh sieve after cooling to room temperature, and then independently seal and store them for later use; the temperature for drying the thermoplastic polyimide is 220°C, and the time is 3h; the reinforcing agent and lubricant are dried at 150°C for 3 hours; the thermoplastic polyimide used is Ratem-YS20, the reinforcing agent is glass fiber, and the lubricant is molybdenum disulfide.

[0070] 2) According to the mass ratio of thermoplastic polyimide, reinforcing agent and lubricant at a ratio of 70:20:10, take the dried thermoplastic polyimide, reinforcing agent and lubricant respectively and put them into a high-speed tissue grinder Stir 3 times to obtain polyimide compound (i.e. raw material); The time of each stirring is 10s, and the rotating speed of mec...

Embodiment 2

[0075] The preparation method of the bearing cage material of the present embodiment comprises the following steps:

[0076] 1) Dry the thermoplastic polyimide, reinforcing agent and lubricant separately, pass through a 200-mesh sieve after cooling to room temperature, and then independently seal and store them for later use; the temperature for drying the thermoplastic polyimide is 220°C, and the time is The drying time of reinforcing agent and lubricant is 150℃ and the drying time is 3 hours; the thermoplastic polyimide used is YHPI-P-100, the reinforcing agent is glass fiber, and the lubricant is molybdenum disulfide.

[0077] 2) According to the mass ratio of thermoplastic polyimide, reinforcing agent and lubricant at a ratio of 85:18:5, take the dried thermoplastic polyimide, reinforcing agent and lubricant respectively and put them into a high-speed tissue masher Stir 3 times to obtain polyimide compound (i.e. raw material); The time of each stirring is 10s, and the rota...

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Abstract

The invention relates to a bearing retainer material, a preparing method of the bearing retainer material, a bearing retainer and a preparing method of the bearing retainer, and belongs to the technical field of bearings. The preparing method of the bearing retainer material comprises the following steps that raw materials with polyimide as a main component are provided; the raw materials are subjected to hot-press forming, a platy polyimide composite material is prepared, then, the platy polyimide composite material is prepared into a rod, and then the bearing retainer material is obtained. The bearing retainer material prepared through the preparing method of the bearing retainer material is high in tensile strength and good and outstanding in abrasion resistance, strength and strength consistency are obviously superior to those of a polyimide material manufactured through a traditional technology, particularly, the dual advantages of low cost and high forming efficiency are achieved, and the application range of the polyimide material can be better enlarged. The platy polyimide material is prepared, then the rod-like polyimide material is prepared, and the cost for producing thebearing retainer through the polyimide material is greatly reduced.

Description

technical field [0001] The invention relates to a preparation method of a bearing cage material, and also relates to a preparation method of a bearing cage, which belongs to the technical field of bearings. Background technique [0002] Polyimide cage material has the characteristics of high and low temperature resistance, high strength and wear resistance. It is an excellent solid self-lubricating material and is widely used as a rolling bearing cage. [0003] The polyimide used as the cage material is generally thermoplastic polyimide, which is relatively expensive. In order to reduce the material cost, the cage material is generally a tubular blank, and the mold used for molding is as follows figure 2 As shown, it includes a cylindrical jacket 5 , a cylindrical mandrel 6 , a cylindrical base 7 and a cylindrical punch 8 . Generally, when the mold is used to make polyimide cage materials, the hot pressing process is usually used. Although the material cost is reduced, this...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C43/02B29C43/36B29C43/52B29C43/58C08K7/14C08K3/30C08L79/08F16C33/44F16C33/56
Inventor 孙小波李文超王辰悦李媛媛王枫楚婷婷
Owner LUOYANG BEARING RES INST CO LTD
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