A kind of preparation method of sharp epoxy resin bonded diamond abrasive tool

An epoxy resin and diamond technology, which is applied in metal processing equipment, grinding/polishing equipment, abrasives, etc., can solve the problems of difficult toughness of diamonds, large pores of abrasive tools, and precipitation of abrasives, so as to improve the grinding efficiency. The effect of sharpening performance, increasing toughening speed and fast production speed

Active Publication Date: 2016-01-27
惠安宇信金刚石工具有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 1. Epoxy resin has good wear resistance, but it is difficult to toughen diamond, the grinding effect is poor, and it is not sharp enough
[0008] 2. When the content of epoxy resin is lower than 50%, the mixture of diamond, resin, curing agent and filler has high viscosity and difficult flow, and the abrasive mold after molding will show large pores and poor pouring defects
[0009] 3. In the process of preparing epoxy resin diamond abrasive tools with different meshes, when the mesh number of abrasives is lower than 200 meshes, abrasive precipitation often occurs in the molded abrasives, resulting in uneven grinding

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] According to mass percentage, 13 parts of polycrystalline diamond micropowder with a particle size of 50 mesh, 12 parts of silicon carbide micropowder with a particle size of 50 mesh, 4 parts of corundum with a particle size of 200 mesh, 25 parts of aluminum hydroxide with a particle size of 1000 mesh, and 200 mesh with a particle size 5 parts of glass fiber, 3 parts of zinc oxide with a particle size of 400 mesh, 0.5 parts of defoamer, 1 part of butanol After mechanical stirring, add 30 parts of epoxy resin (E~44, epoxy value 0.44), phenalkamine ( PPA, product number is T~31) 6.5 parts, after stirring into a uniform fluid, inject it into the plastic mold by pouring method, after standing for 20 minutes, pre-coat epoxy resin (E~44) and curing agent phenolic The amine (PPA) nylon buckle cloth is pasted on the top surface of the incompletely cured abrasive tool, and the temperature is 25°C and the pressure is not less than 1500Pa. After standing and curing for 12 hours, th...

Embodiment 2

[0036] According to mass percentage, 8 parts of polycrystalline diamond powder with a particle size of 50 mesh, 17 parts of silicon carbide powder with a particle size of 50 mesh, 8 parts of corundum with a particle size of 200 mesh, 15 parts of aluminum hydroxide with a particle size of 800 mesh, and 200 mesh 15 parts of glass fiber, 2 parts of zinc oxide with a particle size of 400 mesh, 0.5 parts of defoamer, 1 part of butanol After mechanical stirring, add 20 parts of epoxy resin (E~51, epoxy value 0.55), polypropylene oxide 13.5 parts of base diamine (the product number is D230), after stirring into a uniform fluid, inject it into the plastic mold by pouring method, and after standing for 35 minutes, pre-coat epoxy resin (E~44) and curing agent phenolic Stick the amine (PPA) nylon button cloth on the top surface of the incompletely cured abrasive tool, let it stand and cure for 24 hours at a temperature of 15°C and a pressure of not less than 1500Pa, and then release the m...

Embodiment 3

[0038] According to mass percentage, 5 parts of polycrystalline diamond micropowder with a particle size of 50 mesh, 20 parts of silicon carbide micropowder with a particle size of 50 mesh, 8 parts of corundum with a particle size of 200 mesh, 10 parts of magnesium hydroxide with a particle size of 1000 mesh, and 400 mesh 20 parts of glass fiber, 2 parts of zinc oxide with a particle size of 400 mesh, 0.5 parts of defoamer, 1 part of ethanol After mechanical stirring, add 18 parts of epoxy resin (E~51, epoxy value 0.51), amino tetrafunctional ring 4 parts of epoxy resin (AG-80#), 9.5 parts of polyoxypropylene-based diamine (product number D230), 2 parts of phenalkamine (PPA), stirred into a uniform fluid, poured into the plastic mold by pouring, static After standing for 20 minutes, stick the nylon button cloth pre-coated with epoxy resin (E~44) and curing agent phenalkamine (PPA) on the top surface of the incompletely cured abrasive tool. After standing and curing at 1500 Pa ...

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PUM

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Abstract

The invention discloses a preparation method of a sharp epoxy resin bonded diamond abrasive tool, the working layer of which is mainly made of diamond abrasives, epoxy resin binders, curing agents, auxiliary abrasives, fillers and auxiliary additives; Mix 5~20 parts of self-sharpening diamond, 5~28 parts of auxiliary abrasive, 10~40 parts of filler, 0.5~10 parts of other auxiliary agents, and mix them uniformly with 17~45 parts of liquid epoxy resin, curing agent After 5-25 parts are mixed and stirred evenly, the above-mentioned mixture with fluidity is injected into a plastic mold by pouring, and a sharp epoxy resin bonded diamond abrasive tool is obtained after curing; the above parts are mass percentages. Compared with the abrasive tools prepared by hot pressing, the present invention has simple preparation process, energy saving and emission reduction, can reduce the environmental pollution of solid dust, is green and environmentally friendly, and has high production speed. Compared with the existing foreign products, the present invention has high sharpness , Strong self-sharpening, good polishing effect, long life and so on.

Description

technical field [0001] The invention relates to an abrasive tool, in particular to a preparation method of a sharp epoxy resin bonded diamond abrasive tool. Background technique [0002] Superhard material resin abrasive tools are made of superhard material diamond or cubic boron nitride as abrasive, resin powder as binder, adding appropriate filling materials, and through the process of preparation, mixing, hot pressing, curing and mechanical processing. It is a processing tool with a certain geometric shape and can be applied to different grinding requirements. The proportion of resin bonded abrasives in superhard material abrasives is about 30%~60%. Superhard material resin abrasives have easy access to raw materials and low cost; low temperature curing, short production cycle, required equipment and manufacturing process The process is simple; the grinding efficiency is high; the abrasive tool has good self-sharpening, is not easy to be blocked, and the surface of the p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24D3/28B24D18/00
Inventor 张水洞邓国川曾云峰
Owner 惠安宇信金刚石工具有限公司
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