Method for preparing ceramic bond stacking abrasive material through centrifugal drying granulation technology

Abstract

The invention provides a method for preparing a ceramic bond stacking abrasive material through a centrifugal drying granulation technology. The method is characterized in that an abrasive material and ceramic bond powder composed of silicon oxide powder, aluminum oxide powder, lithium carbonate powder, sodium carbonate powder, boric acid powder and zirconium oxide powder are adopted as the raw materials, mixed slurry is obtained by adding deionized water and dextrin liquid into the raw materials, stacking abrasive material fresh pellets are obtained through centrifugal drying, and the ceramic bond stacking abrasive material can be obtained through calcination. The abrasive material can be evenly wrapped and high bonding force can be generated through the liquid phase formed after the powder bond in the stacking abrasive material is fused. The spherical stacking abrasive material prepared through the method has the characteristics of the uniform particle granularity and the uniform organization structure, and can be used for preparing abrasive cloth, abrasive belts and resin bond grinding wheels. The abrasive belts prepared from the ceramic bond stacking abrasive material have the characteristics of being high in grinding efficiency, good in self-sharpening performance and grinding heat dissipation and long in service life; automatic production can be easily achieved through the technology.

Description

Technical field [0001] The invention relates to a preparation method for preparing ceramic bond accumulation abrasives by using centrifugal drying granulation technology. Background technique [0002] Abrasive belt is a belt-shaped tool that can be used for grinding and polishing, which is made by bonding abrasives to flexible materials using adhesives. The three elements of the abrasive belt are: substrate, abrasive and adhesive. The currently used abrasive belts have the following disadvantages due to the use of ordinary structural abrasives: (1) Single-layer abrasive belts have thin working layers, short service life and low utilization rate. Frequent replacement reduces production efficiency and improves operator labor. Strength; (2) The gap between abrasive grains on the abrasive belt is small, and the abrasive debris will remain on the surface of the abrasive belt during the grinding process, causing blockage, increasing friction and heating, and the workpiece is easy to bu...

AI Technical Summary

Problems solved by technology

The currently used abrasive belts have the following disadvantages due to the use of ordinary structural abrasives: (1) the working layer of the single-layer abrasive belt is thin, the service life is short, and the utilization rate is low. Frequent replacement reduces production efficiency and increases the labor of the operator. Strength; (2) The gap between the abrasive grains on the abrasive belt is small, and the abrasive debris will remain on the surface of the abrasive belt during the grinding process to cause blockage, increase friction and heat, and the workpiece is easy to burn; (3) The traditional single-layer abrasive belt is grinding During the process, after the blunt abrasive falls off, the friction between the adhesive and the workpiece is caused, so that the abrasive belt cannot continue to work stably; (3) the state of the abrasive grains in the grinding process and the The grinding force is different, so the surface quality of the ground workpiece is quite different, and the single-layer abrasive belt needs to be replaced frequently during the grinding process, so that the grinding quality of the workpiece at the joint is obviously inconsistent; (4) The abrasive belt preparation process Among them, fine-grained abrasives make it difficult to plant sand on the abrasive belt due to problems such as agglomeration, and it is difficult to ensure the uniformity of the sand plant; (5) The traditional multi-layer sand planting process cannot meet the softness requirements of the abrasive belt

(6) In the preparation process of existing piled abrasives, the raw materials are often mixed mechanically. One is that when the raw material particles are finer, agglomeration is easy to occur, and the other is that when the size difference between the binder and the abrasive is large, it is difficult to mix the two evenly. Form a non-uniform microstructure centered on the binder, resulting in scratches on the surface of the workpiece during the grinding process, affecting the accuracy and surface roughness of the workpiece

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