A kind of high-precision sponge sand and its manufacturing method

Abstract

The invention relates to the technical field of grinding tools, in particular to high-precision sand sponge and a manufacturing method thereof. The method comprises the steps as follows: step one, selecting a sponge substrate layer; step two, modulating a grinding material and glue mixture; step three, selecting a thin film layer, and coating the thin film layer with the grinding material and glue mixture obtained in the step two in a scraping manner so as to form a grinding material and glue mixture layer on the thin film layer; step four, drying the thin film layer coated with the grinding material and glue mixture layer in a scraping manner so as to dry the glue in the grinding material and glue mixture layer, and exposing a grinding material layer in the grinding material and glue mixture layer out of the surface of a glue layer after the glue is dried; and step five, gluing the thin film layer processed in the step four and the sponge substrate layer to prepare a high-precision sand sponge finished product. According to the high-precision sand sponge and the manufacturing method thereof, the superfine grinding material with the particle size of 240-2,500 meshes is compounded on the sponge substrate so as to prepare the high-precision sand sponge, the sand sponge has a superfine grinding function, the grinding material layer is flat and smooth, the utilization rate of the grinding material is high, and the service life is long.

Description

technical field [0001] The invention relates to the technical field of grinding tools, in particular to a high-precision sponge sand and a manufacturing method thereof. Background technique [0002] The commonly used coated abrasives can be divided into two categories according to the base material classification: [0003] 1. Paper substrate: It is the most traditional production process. It is made by coating various hard abrasives on the paper substrate. The advantages of this type of product are: cheap, easy to produce; Not good enough, slow heat dissipation, uneven grinding force on the processed workpiece, unsatisfactory precision machining; [0004] 2. Cloth base material: it is made by coating various hard abrasives on the cloth base. The basic performance of this type of product is similar to that of paper products. The advantages are: high tensile strength, no deformation, and higher grinding force than Paper-based products are stronger. [0005] Today's products...

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Problems solved by technology

[0003] 1. Paper substrate: It is the most traditional production process, which is made by coating various hard abrasives on the paper substrate. The advantages of this type of product are: cheap price, easy to produce; Not good enough, slow heat dissipation, uneven grinding force on the processed workpiece, unsatisfactory precision machining;

[0006] During the production process of the existing sponge sand, due to the sponge foam holes on the surface of the sponge base material, the liquid glue used in the production process and the abrasive with a particle size smaller than the sponge foam hole diameter will penetrate into the sponge foam holes. , resulting in waste of glue and abrasives, shortening the service life of the sponge sand, and the abrasives appear uneven on the surface of the sponge base material, when the sponge sand produced by this process is used to process the product, it will cause the workpiece to be processed. abrasive scratches

[0007] Especially for some workpieces that need to be finely polished, it is necessary to use sponge sand with an abrasive particle size of more than 1000 mesh. However, the current sponge sand is limited by the size of the foam pores of the sponge, and its abrasive particle size can only be about 240 mesh. , which seriously restricts the development of the fine grinding industry, so the market urgently needs a high-precision sponge sand with an abrasive particle size of more than 1000 mesh

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