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

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...

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.

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