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Bearing retainer material and preparation method thereof

A bearing cage and polyimide technology, applied in the field of materials, can solve the problems of large abrasion effect of metal on friction surface, large deformation of cage size, large friction torque, etc., and achieve good thermal conductivity and compression creep resistance. performance, excellent friction and wear resistance, and high reliability

Active Publication Date: 2010-04-21
LUOYANG BEARING RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Rotor bearing cages have been widely used in motors with magnetism and a small temperature difference range, but there is no rotor bearing cage suitable for use on motors with no magnetism, large ambient temperature changes, and high speeds for up to 100 hours. shelf
At present, under the condition of ultra-low temperature liquid nitrogen (-196°C), glass fiber reinforced polytetrafluoroethylene composite material is usually used as the bearing cage material, but the cage made of this material alternates between high and low temperature (-196°C ~ +55°C). , non-magnetic and high speed (7200r / min) working conditions, there are bearing noise, large friction torque, short stop time, large amount of wear, large cage size deformation and friction to metal The abrasive effect of the surface is relatively large, which cannot meet the requirements of use.

Method used

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  • Bearing retainer material and preparation method thereof
  • Bearing retainer material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0025] The composition of the bearing cage material by weight percentage is:

[0026] Molybdenum disulfide 2%, polyimide 12%, polyphenylene 12%, polytetrafluoroethylene 74%.

[0027] Among them, the logarithmic viscosity of polyimide is 115ml / g, and the apparent density is 0.40g / cm 3 .

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

[0029] (1) Accurately weigh molybdenum disulfide, polyimide, polyphenylene ester and polytetrafluoroethylene by weight percentage, wherein the particle diameter of molybdenum disulfide is 100-150 mesh, and the particle diameter of polyimide is 100-300 mesh, the particle size of polyphenylene is 100-300 mesh, the particle size of polytetrafluoroethylene is 100-150 mesh, put it into the mixer with a rotation speed of 10000r / min and stir and mix 5 times, each time for 20 seconds , and then grind it with a mortar for 5 minutes, and use a 20-fold microscope to observe that there is no obvious uneven pheno...

Embodiment 2

[0035] The composition of the bearing cage material by weight percentage is:

[0036] Molybdenum disulfide 5%, polyimide 8%, polyphenylene 9%, polytetrafluoroethylene 78%.

[0037] Among them, the logarithmic viscosity of polyimide is 150ml / g, and the apparent density is 0.35g / cm 3 .

[0038] The preparation method of the bearing cage material comprises the following steps:

[0039] (1) Accurately weigh molybdenum disulfide, polyimide, polyphenylene ester and polytetrafluoroethylene by weight percentage, wherein the particle diameter of molybdenum disulfide is 100-150 mesh, and the particle diameter of polyimide is 100-300 mesh, the particle size of polyphenylene is 100-300 mesh, the particle size of polytetrafluoroethylene is 100-150 mesh, put it into the mixer with a rotation speed of 12000r / min and stir and mix 5 times, each time for 10 seconds , and then grind it with a mortar for 10 minutes, and use a 20-fold microscope to observe that there is no obvious unevenness, w...

Embodiment 3

[0045] The composition of the bearing cage material by weight percentage is:

[0046] Molybdenum disulfide 5%, polyimide 10%, polyphenylene 15%, polytetrafluoroethylene 70%.

[0047] Among them, the logarithmic viscosity of polyimide is 130ml / g, and the apparent density is 0.45g / cm 3 .

[0048] The preparation method of the bearing cage material comprises the following steps:

[0049] (1) Accurately weigh molybdenum disulfide, polyimide, polyphenylene ester and polytetrafluoroethylene by weight percentage, wherein the particle diameter of molybdenum disulfide is 100-150 mesh, and the particle diameter of polyimide is 100-300 mesh, the particle size of polyphenylene is 100-300 mesh, the particle size of polytetrafluoroethylene is 100-150 mesh, put it into the mixer with a rotation speed of 12000r / min and stir and mix 3 times, each time for 15 seconds , and then grind it with a mortar for 8 minutes, and use a 20-fold microscope to observe that there is no obvious unevenness, ...

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Abstract

The invention discloses a bearing retainer material and a preparation method thereof. The material is prepared from the following raw materials in percentage by weight: 2 to 5 percent of molybdenium disulfide, 8 to 12 percent of polyimide, 9 to 15 percent of polybenzoate, the balance of polytetrafluoroethylene. The preparation method comprises the following steps of: weighting the raw materials; mixing the raw materials; grinding the mixture; loading the mixture into a mould; pressurizing to prepare a blank; sintering the blank; and processing the blank into a finished product. The retainer material has the advantages of high temperature resistance, low temperature resistance, dimension stability, small erosion to metal and rubbed surfaces and good abrasion resistance. A retainer made of the bearing retainer material can be used under harsh conditions of no magnetism, ambient temperature changed between -19 and +55 DEG C, and rotation speed up to 7,200r / min so as to improve the performance of bearings.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a bearing cage material and a preparation method thereof. Background technique [0002] The rotor bearing cage has been widely used in motors with magnetism and small temperature difference range, but there is no rotor bearing cage suitable for use on motors with no magnetism, large ambient temperature changes and high speed for up to 100 hours. shelf. At present, under the condition of ultra-low temperature liquid nitrogen (-196°C), glass fiber reinforced polytetrafluoroethylene composite material is usually used as bearing cage material, but the cage made of this material alternates between high and low temperature (-196°C ~ +55°C). , non-magnetic and high speed (7200r / min) working conditions, there are bearing noise, large friction torque, short stop time, large amount of wear, large cage size deformation and friction to metal Due to the large abrasive effect o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/18C08L79/08C08L67/00C08K3/30B29C43/02B29C43/58B29C43/36B29C33/38F16C33/44F16C33/56
Inventor 王枫王子君时连卫郭金芳
Owner LUOYANG BEARING RES INST CO LTD
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