Preparation method of diamond grinding wheel with ordered abrasive materials

Abstract

The invention discloses a preparation method of a diamond grinding wheel with ordered abrasive materials. The preparation method comprises the following steps that S1, a matrix is prepared; S2, inkjetis carried out; S3, holes are formed; S4, chemical plating is carried out; and S5, sanding is performed. In the S1, a grinding wheel substrate is prepared by numerical control machining; in the S2, an ink layer is sprayed on the substrate; in the S3, a laser engraving machine is adopted to carving out the blind holes in size with diamonds in an ordered arrangement mode on the upper sand surface;in the S4, chemical plating is carried out on the substrate treated in the S3, so that metal pre-coatings are deposited on the bottoms and the side walls of the blind holes; and in the S5, excess diamond grinding materials are placed on the surface of the pre-plating substrate obtained in the step S4 for rolling, and the lower parts of the grinding materials are embedded into the blind holes and put into an electroplating solution for electroplating, so that the grinding materials are solidified in the blind holes to form a grinding material layer. According to the method, the ink layer is sprayed on the grinding wheel substrate, so that the substrate is isolated, and diamonds roll to enter the blind holes to be electroplated and solidified during sanding, ink shielding layers in other areas cannot be coated with nickel, and the ink shielding layers can automatically fall off during scrubbing in the electroplating solution, so that regular and ordered arrangement of the diamond abrasive materials on the surface of the grinding wheel substrate is realized.

Description

Technical field [0001] The invention relates to the technical field of hard material products, and in particular relates to a method for preparing a diamond grinding wheel with ordered abrasives. Background technique [0002] The traditional method of manufacturing electroplated diamond grinding wheels requires three electroplating processes: pre-plating, sanding, and thickening, of which sanding is the most important process. At present, the main sand loading methods for electroplated diamond grinding wheels are sand spreading and buried sand. The sanding method is to put the surface of the grinding wheel substrate upward in the plating solution, and use a small spoon or pipette to sprinkle the sand on it. The sand should be thin and uniform, and the thickness is generally 1-2mm; if it is an arc surface or If there is more than one plating surface, turn a certain angle to continue sanding after finishing one surface. For diamond abrasives with coarser particle size, the sandin...

AI Technical Summary

Problems solved by technology

Compared with hot-pressed sintered metal bonded grinding wheel and vitrified bonded grinding wheel, the electroplated diamond grinding wheel has a shorter service life, and the abrasive falls off quickly. The main reason is that the metal coating has a small holding force on the diamond abrasive, and the abrasive grains for effective grinding have a small edge height. Patent CN105154958A Disclosed is a preparation method of an electroplated diamond grinding wheel in which abrasives are arranged in an orderly manner. By starting a blind hole on the grinding wheel base and then sanding it, the metal coating has a small holding force on the diamond abrasive and the height of the abrasive grains for effective grinding is solved. Small problem, but the patent adopts fine hole discharge technology to open blind holes on the surface of the grinding wheel substrate, and the area between the blind holes on the substrate is not shielded when sanding, and the metal coating is deposited on the surface of the substrate and in the blind holes during the electroplating thickening process

Because the area between the blind holes on the substrate is not shielded during sanding, diamonds may adhere to the non-blind holes on the surface of the grinding wheel substrate and be fixed by the electroplating layer, resulting in the inability to achieve a true orderly arrangement of abrasives

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