Preparation method of composition material for ball bearing retainer

Abstract

The invention relates to a preparation method of a composite material for a ball bearing retainer. The method comprises the following steps of: dipping through an impregnator, conducting hot-pressing coiling through a three-roller tube coiling machine and performing post-curing treatment by taking aramid fiber cloth orthogonally weaved by wefts and warps as a base body and prepared phenolic resin as a bonder to prepare the composition material for the ball bearing retainer. The composite material for the ball bearing retainer can be used for a long time, wherein the temperature is in a range of 150-200 DEG C, the coefficient of linear expansion is less than or equal to 1.2*10 to the power of 6 / DEG C, the modulus of elasticity in static bending is greater than or equal to 40MPa, and the circular strength of extension is greater than or equal to 200MPa. The process parameters are reasonably set, which are the basic conditions for the composition material for the ball bearing retainer to be in a higher using temperature range, and the basic conditions for improving other performances. Therefore, the composite material for the ball bearing retainer prepared by the invention can satisfy the using demands of high-temperature high-speed precise ball bearing retainers.

Description

[0001] technical field [0002] The invention belongs to the technical field of cage materials, and in particular relates to a preparation method of a composite material for a ball bearing cage. [0003] Background technique [0004] High-speed precision ball bearings often use cotton-phenolic as the base material of the cage, but the properties of cotton-phenolic ring tensile strength, flexural modulus, linear expansion coefficient, impact strength, etc. have not met the requirements of high-temperature high-speed precision ball bearings. Rack usage requirements. [0005] The phenolic aramid fiber cloth made of radial and weft orthogonal weaving and phenolic aramid fiber cloth is one of the important directions for the development of high-temperature and high-speed precision ball bearing cages. The use temperature of this cage material is There is no relevant report on phenolic aramid fiber cloth with a temperature lower than 150°C and a temperature greater than 150°C. ...

AI Technical Summary

Problems solved by technology

[0004] High-speed precision ball bearings often use cotton-phenolic as the base material of the cage, but the properties of cotton-phenolic ring tensile strength, flexural modulus, linear expansion coefficient, impact strength, etc. have not met the requirements of high-temperature high-speed precision ball bearings. Rack requirements

[0005] The phenolic aramid fiber cloth made of radial and weft orthogonal weaving and phenolic aramid fiber cloth is one of the important directions for the development of high-temperature and high-speed precision ball bearing cages. The use temperature of this cage material is It is lower than 150°C, and there is no relevant report on the use of phenolic aramid fiber cloth with a temperature greater than 150°C