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Integral composite material self-lubricating plain bearing and method for the production thereof

A technology of composite materials and sliding bearings, which is applied in the direction of bearing cooling, manufacturing tools, bearing components, etc., can solve the problems of bearing bush fracture or falling off, lack of self-lubrication of bearings, and short service life, so as to improve bearing capacity and accurate bearing size , enhance the effect of wear resistance

Inactive Publication Date: 2009-02-11
攀钢集团成都钢铁有限责任公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the roll bearing bush processed by epoxy resin glass fiber cloth laminate can basically meet the production requirements, but this kind of bearing lacks self-lubrication, and the reinforcing fibers are difficult to arrange in the directional direction, the service life is short, the consumption is large, and the replacement of bearings is frequent. thereby affecting product yield
At the same time, in the production process, due to the increase of the gap between the journal and the bearing bush of the roll, the wall thickness of the steel pipe is not easy to be accurately controlled, and the consumption of steel increases, which affects the product quality
In addition, there are also glass fiber reinforced plastic bearing seats inlaid with copper tiles or metal bearing seats inlaid with materials with lubricating properties; but this type of structure has poor reliability under impact loads, and the bearing bushes are prone to breakage or fall off

Method used

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  • Integral composite material self-lubricating plain bearing and method for the production thereof
  • Integral composite material self-lubricating plain bearing and method for the production thereof
  • Integral composite material self-lubricating plain bearing and method for the production thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1) Take each component by weight % as follows:

[0029] Glass fiber (thickness 0.1mm grid cloth and long fiber each 1 / 2) 65

[0030] Carbon fiber (thickness 0.4mm fiber unidirectional cloth) 3

[0031] Lubricant (molybdenum disulfide, graphite 1 / 2 each) 2

[0032] Thermosetting resin (epoxy resin: phenolic resin = 2:1) 30

[0033] 2) Preparation of fiber resin impregnation:

[0034] a) First, mix ethanol and toluene in a ratio of 1:2 by volume to prepare a solvent, then dissolve the epoxy resin, phenolic resin mixture and solvent in a ratio of 10:3 by weight, add a lubricant, and prepare Form a resin impregnating solution, then impregnate glass fibers and carbon fibers in the resin impregnating solution respectively, and finally dry at a temperature range of 120°C to 180°C to 120°C for 30 minutes to obtain a fiber resin impregnated product.

[0035] 3) Bearing molding:

[0036] a) First, the resin impregnated product obtained in step 2) is cut according to the dire...

Embodiment 2

[0040] 1) Take each component by weight % as follows:

[0041] Glass fiber (thickness 0.4mm grid cloth) 45

[0042] Carbon fiber (1 / 2 each of long fiber and 0.1mm thick unidirectional cloth) 10

[0043] Lubricants (1 / 2 each of molybdenum disulfide and zinc stearate) 10

[0044] Thermosetting resin (diaminodiphenyl sulfone modified epoxy resin) 35

[0045] 2) Preparation of fiber resin impregnation:

[0046] a) First, mix the resin and toluene at a ratio of 10:1 by volume, and add a lubricant at the same time to prepare a resin impregnating solution, then impregnate glass fibers and carbon fibers in the resin impregnating solution, and finally, at 120 ° C ~ Dry at a temperature range of 180° C. to 120° C. for 20 minutes to obtain a fiber resin impregnated product.

[0047] 3) Bearing molding:

[0048] a) First, cut the resin impregnated product obtained in step 2) according to the directional arrangement of the fibers to make a sheet consistent with the cavity of the mold,...

Embodiment 3

[0052] 1) Take each component by weight % as follows:

[0053] Glass fiber (thickness 0.1mm grid cloth) 45

[0054]Carbon fiber (thickness 0.4mm fiber unidirectional cloth) 3

[0055] Lubricant (molybdenum disulfide) 7

[0056] Thermosetting resin (isophthalic unsaturated polyester resin) 45

[0057] 2) Fiber resin impregnation and preparation:

[0058] b) Respectively impregnating glass fiber and carbon fiber in isophthalic unsaturated polyester resin to obtain a fiber resin impregnated product.

[0059] 3) Bearing molding:

[0060] a) First, the resin impregnated product obtained in step 2) is cut according to the directional arrangement of the fibers to make a sheet consistent with the mold cavity, and then the sheet is laminated into a glass fiber laminate with a thickness of 4mm and a thickness of 2mm carbon fiber composite.

[0061] b) Put the laminated fiber into the mold in the direction perpendicular to the axis of the bearing shaft, press for 6 hours at a tempe...

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Abstract

The invention provides a one-piece composite material self lubricating sliding bearing and a manufacturing method thereof; the bearing is made of reinforced fibrous resin composite material, and a bearing pedestal and a bearing bush are of integral structure formed by one step; wherein the included angle between the arranging direction of over 50% of fibers in the bearing and the radial direction of the bearing is less than 30 degrees, and a cooling water channel is arranged in the bearing. The manufacturing method includes the following steps: firstly preparing impregnated fibrous resin, then making the impregnated fibrous resin into a fiber laminated body, placing the fiber laminated body into a die and producing the bearing by compression molding. The method has high production efficiency and the produced bearing has precise size, high carrying capacity, strong wearing resistance, self lubricating function and high reliability when running in high-temperature and damp environment and can withstand the impact of periodical alternating load of a rolling mill. The bearing is mainly applied to a rolling mill used for rolling seamless steel pipes.

Description

technical field [0001] The present invention relates to a sliding bearing and a manufacturing method thereof, in particular to an integral composite material self-lubricating sliding bearing and a manufacturing method thereof for a seamless steel tube rolling mill Background technique [0002] In the periodic rolling mill used for rolling seamless steel pipes, the rotation direction of the rolls is opposite to the feeding direction of the steel pipes. The process of rolling billets is equivalent to the process of forging and rolling. When rolling the tubes, the rolls and bearings are subjected to strong alternating forces. Impact force, high temperature and water corrosion at the same time, the working conditions are harsh. Lubricating fluids are not suitable for use in this production environment. At present, the roll bearing bush processed by epoxy resin fiberglass cloth laminate can basically meet the production requirements, but this kind of bearing lacks self-lubricati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C33/20F16C37/00B21B31/07
Inventor 成海涛黄宗祥罗喜泽滕建明李卫红宋丽君牟德富
Owner 攀钢集团成都钢铁有限责任公司
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