A kind of chopped carbon fiber reinforced resin bond superhard abrasive grinding wheel and preparation method thereof

A technology of chopped carbon fiber and superabrasives, which is applied in the direction of abrasives, grinding/polishing equipment, grinding devices, etc., can solve the problems of affecting the service life of the grinding wheel, poor temperature resistance of the grinding wheel, and affecting the processing efficiency, so as to save energy , production cost reduction, and the effect of maintaining grinding performance

Active Publication Date: 2021-08-20
江苏赛扬精工科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But now many materials are materials welded together by two different metals. If diamond and cubic boron nitride are used as abrasive grinding wheels for processing, the processing efficiency will inevitably be affected.
[0006] The resin powder in the resin bonded grinding wheel can be divided into low-temperature resin powder and high-temperature resin powder. The low-temperature resin powder is mainly made of phenolic resin, and the prepared grinding wheel has poor temperature resistance.
When the processing process generates more heat, it is easy to burn the grinding wheel and affect the service life of the grinding wheel

Method used

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  • A kind of chopped carbon fiber reinforced resin bond superhard abrasive grinding wheel and preparation method thereof
  • A kind of chopped carbon fiber reinforced resin bond superhard abrasive grinding wheel and preparation method thereof
  • A kind of chopped carbon fiber reinforced resin bond superhard abrasive grinding wheel and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] A chopped carbon fiber reinforced resin bonded superabrasive grinding wheel, the preparation method of which is aluminum powder matrix mixing, grinding layer mixing, aluminum powder matrix molding pressing, grinding layer molding pressing, hot pressing sintering, and secondary hardening .

[0055] (1) Aluminum powder matrix mixture:

[0056]

[0057]Among them, the size of aluminum powder is 320 mesh; the carbon content of chopped carbon fiber is 96%; the tensile strength is 3600MPa; the tensile modulus is 320GPa; the density is 1.755 g / cm 3 ; Diameter 7.5μm; Length range: 1~10mm chopped carbon fiber.

[0058] Weigh the aluminum powder, ferric oxide powder, calcium oxide powder and chopped carbon fiber according to the above ratio, put them in a three-dimensional mixer, mix for 1.5 hours, and then ball mill for 1.5 hours to obtain aluminum powder.

[0059] (2) Grinding layer mixing:

[0060] First, according to weight percentage, phenolic resin 80%, polyimide resi...

Embodiment 2

[0075] A chopped carbon fiber reinforced resin bonded superabrasive grinding wheel, the preparation method of which is aluminum powder matrix mixing, grinding layer mixing, aluminum powder matrix molding pressing, grinding layer molding pressing, hot pressing sintering, and secondary hardening .

[0076] (1) Aluminum powder matrix mixture:

[0077]

[0078] Among them, the carbon content of chopped carbon fiber is 96%; the tensile strength is 3600MPa; the tensile modulus is 320GPa; the density is 1.755 g / cm 3 ; Diameter 7.5μm; Length range: 1~15mm chopped carbon fiber.

[0079] According to the above ratio, weigh the aluminum powder, ferric oxide, calcium oxide and chopped carbon fiber, pre-mix them manually, then put them in a three-dimensional mixer, mix them for 1.5 hours, make them fully mixed and then ball mill them for 1.5 hours. Aluminum powder is obtained.

[0080] (2) Grinding layer mixing:

[0081] First, according to weight percentage, phenolic resin 75%, pol...

Embodiment 3

[0095] Processing performance test:

[0096] Table 1 compares the performance parameters of the same solder workpiece processed by the chopped carbon fiber reinforced resin bond grinding wheel of the present invention and the existing grinding wheel, wherein the chopped carbon fiber reinforced resin bond grinding wheel 1 is the grinding wheel in the first embodiment, image 3 A schematic diagram of the processing. The better the shape retention of the grinding wheel, the faster the limit speed of the grinding wheel. When processing the same type of solder, the faster the speed of the grinding wheel, the higher the processing efficiency; the longer the dressing interval of the grinding wheel, the lower the dressing frequency, and the processing efficiency of the grinding wheel is also improved. ;The higher the heat that the grinding wheel can withstand, the less likely the grinding wheel will be burned. When processing the same type of solder, when the number of processed workp...

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Abstract

The invention discloses a chopped carbon fiber-reinforced resin bond superabrasive grinding wheel and a preparation method thereof. The matrix is ​​formed by pressing an aluminum powder matrix reinforced with chopped carbon fiber, and the grinding layer is made of chopped carbon fiber-reinforced resin bond and abrasive Pressed; the resin bond of the grinding wheel is mixed with high-temperature resin and low-temperature resin; the superhard abrasive is mixed with coated diamond and cubic boron nitride. Compared with the conventional grinding wheel, the superabrasive grinding wheel disclosed by the present invention has a higher limit linear velocity, and the rotational speed of the grinding wheel is increased, thereby improving the production efficiency; at the same time, the shape retention of the grinding wheel can be enhanced, so that the grinding wheel can withstand higher stress , increasing the scope of application of the resin grinding wheel; the working temperature of the grinding wheel is higher, which avoids the burn of the grinding wheel and prolongs the service life of the grinding wheel; the processing technology of the grinding wheel is simpler, and the grinding wheel can process solders of different materials at the same time, It is more suitable for the needs of industrial production.

Description

technical field [0001] The invention belongs to the field of superabrasive grinding wheels, in particular to a chopped carbon fiber reinforced resin bond superabrasive grinding wheel and a preparation method thereof. Background technique [0002] Superabrasive grinding wheels are a large category in the grinding industry, and their grinding layers are mainly composed of superabrasives and bonds. Resin bonded grinding wheel refers to the grinding wheel prepared by using a resin base as a bond. It has a certain degree of elasticity, is easy to manufacture, has good self-sharpening, and has the advantages of short process cycle. material grinding. [0003] The resin bond is mainly composed of resin and various fillers, and its strength mainly depends on the bonding strength of the resin, so that the stress that the resin bond grinding wheel can withstand is small. When the stress applied to the grinding wheel is large, the resin bond grinding wheel It is easily damaged, which...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24D3/34B24D3/28B24D18/00
CPCB24D3/28B24D3/285B24D3/344B24D3/346B24D18/0009
Inventor 张雷王凯平
Owner 江苏赛扬精工科技有限责任公司
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