Method for manufacturing foaming-type grinding wheel with big air pores

A large hole, foaming technology, applied in the direction of manufacturing tools, abrasives, metal processing equipment, etc., can solve the problems of long baking cycle time, cumbersome operation, long production cycle, etc., achieve short production process cycle and avoid environmental pollution , making simple effects

Inactive Publication Date: 2017-09-01
广州捷骏电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the pressing grinding wheels produced in China generally have cumbersome operation, long baking cycle time, high density and poor heat dissipation, and the abrasive cannot fully play its role, resulting in waste and high cost, especially for metal long-axis workpieces, which are prone to vibration. , burns and other defects
[0003] In terms of density, there are relatively few relatively light porous polishing wheels used in China at present, and they basically rely on foreign imports. The light resin grinding wheels used in China mainly use polyvinyl alcohol as a binder and abrasives to make resin grinding wheels. The polyvinyl acetal resin grinding wheel has attracted the most attention. This kind of resin grinding wheel has spongy micropores, which are not easy to block the micropores during grinding, and has certain elasticity and hardness. The polishing effect is good, but it has certain shortcomings, such as production Long cycle, low strength, high wear and tear, high toxicity in the preparation process, great harm to the human body, water resistance, cumbersome production, etc.

Method used

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  • Method for manufacturing foaming-type grinding wheel with big air pores

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A foamed macroporous grinding wheel, consisting of 25 parts of polyurethane resin, 30 parts of silicon carbide micropowder, 20 parts of ethyl ester, 3 parts of surfactant, 20 parts of phenolic resin, 3 parts of dextrin, and 0.5 parts of azobisisobutyronitrile , 0.2 parts of defoamer, 3 parts of filler, and 2 parts of starch.

[0019] A method for manufacturing a foamed macroporous grinding wheel, mainly comprising the following steps:

[0020] 1) Put 25 parts of polyurethane resin and 20 parts of ethyl ester into the container, then place the container in a water bath at 60°C, stir with a stirrer at a speed of 60r / min for 15min, then add 50 parts of silicon carbide, The speed of min continued to stir for 15min, and the first mixed material was prepared for subsequent use;

[0021] 2) Add 3 parts of surfactant to the first mixed material prepared in step 1), and stir for 5 minutes at a speed of 100r / min to prepare the second mixed material for later use;

[0022] 3) Ad...

Embodiment 2

[0027] A foamed macroporous grinding wheel, consisting of 50 parts of epoxy resin, 50 parts of silicon carbide micropowder, 30 parts of ethyl ester, 3 parts of surfactant, 30 parts of polyamide resin, 3 parts of dextrin, and 1 part of sodium lauryl sulfate 2 parts, 0.2 parts of defoamer, 5 parts of filler, and 2 parts of starch.

[0028] A method for manufacturing a foamed macroporous grinding wheel, mainly comprising the following steps:

[0029] 1) Put 50 parts of epoxy resin and 30 parts of ethyl ester into the container, then place the container in a water bath at 60°C, stir with a stirrer at a speed of 80r / min for 20min, then add 50 parts of silicon carbide, The speed of / min continues to stir 20min, makes the first mixed material, for subsequent use;

[0030] 2) Add 3 parts of surfactant to the first mixed material prepared in step 1), and stir for 5 minutes at a speed of 120r / min to prepare the second mixed material for later use;

[0031] 3) Add 30 parts of polyamide...

experiment example

[0041] Experimental object: with existing common ceramic type emery wheel as control group one, existing common metal type emery wheel is as control group two, the application embodiment 1 is as experimental group one, and the application embodiment 2 is as experimental group two.

[0042] Experimental method: Test the weight, porosity and grinding ratio of the above three groups of grinding wheels.

[0043] Experimental requirements: The specifications of the three groups of grinding wheels are all 500mm×150mm×300mm, and the three groups of silicon wafers of the same specification are ground respectively.

[0044] Table 1 shows the specific test records of the three groups of grinding wheels:

[0045]

[0046] Table I

[0047]Combined with Table 1, it can be seen that the foamed macroporous grinding wheel of the experimental group of the present application has the characteristics of light weight, large porosity and good wear resistance compared with existing ordinary cer...

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PUM

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Abstract

The invention discloses a foaming-type grinding wheel with big air pores which is made of resin adhesive, an abrasive material, a thinner, a surface active agent, secondary reinforced resin, dextrin, a foaming agent, a defoaming agent, filler and starch. A manufacturing method of the foaming-type grinding wheel with big air pores includes the steps that the resin adhesive and the thinner are added into a container to be evenly stirred under the water bath condition of 60 DEG C; then the abrasive material and the surface active agent are added to be evenly stirred; afterwards, the secondary reinforced resin, the dextrin, the starch, the filler, the foaming agent and the defoaming agent are added in sequence, and slurry is injected into a mold of 45-60 DEG C when the reaction temperature of the slurry reaches 50 DEG C; and finally the mold is put into an oven to be roasted, demolding is conducted after the slurry in the mold is completely cured, and accordingly the foaming-type grinding wheel with big air pores can be obtained. The foaming-type grinding wheel with big air pores has the characteristics that the grinding wheel is low in weight and nontoxic, and air pores are uniform; the grinding wheel is far superior to a common resin grinding wheel on the aspects of water resistance, abrasion resistance, heat-conducting property and the like; and especially when the grinding wheel is used for grinding long-axis metal parts, no vibration ripple can be caused, and the grinding effect is better.

Description

technical field [0001] The invention relates to the technical field of preparation of grinding wheels, in particular to the field of preparation methods of foamed macroporous grinding wheels. Background technique [0002] The foamed atmospheric grinding wheel is a large porous grinding wheel formed by mixing a special binder and abrasive, and then foaming and pouring the liquid. The foamed porous grinding wheel has high strength, sufficient pores, low density, good heat dissipation, easy chip removal, and self-sharpening. It has the advantages of good resistance, no vibration, simple production and short production process cycle. It is mainly used for cutting and polishing of shaft and rubber workpieces. At present, the pressing grinding wheels produced in China generally have cumbersome operation, long baking cycle time, high density and poor heat dissipation, and the abrasive cannot fully play its role, resulting in waste and high cost, especially for metal long-axis workp...

Claims

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Application Information

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IPC IPC(8): B24D3/28B24D18/00
CPCB24D3/28B24D18/00
Inventor 夏龙权
Owner 广州捷骏电子科技有限公司
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