Preparation method of alumina polishing powder

Abstract

The invention discloses a preparation method of aluminum oxide polishing powder. The preparation method comprises the following steps of: S1, preparing aluminum hydroxide; S2, adding silicon dioxide, cerium oxide, ferric oxide and the aluminum hydroxide in the step S1 into a ball mill according to the mass ratio of (12-8): (3-1): (3-1): (2-1), crushing the added materials so as to obtain a crushed material; and S3, carrying out coarse treatment on the crushed material. According to the preparation method, the prepared aluminum oxide polishing powder is rhombic crystals, while the aluminum oxide polishing powder prepared through a traditional process is flocculent crystals, the aluminum oxide polishing powder prepared through the preparation method has good self-sharpening performance and toughness, the wear resistance of the aluminum oxide polishing powder can be greatly improved, the polishing time is prolonged to 5-5.5 hours from 3 hours, the whiteness is also improved, and the conventional whiteness is 89-92, while the whiteness of the product prepared by the process of the invention is 98 or above.

Description

technical field [0001] The invention relates to the technical field of alumina polishing powder, in particular to a preparation method of alumina polishing powder. Background technique [0002] As a commonly used polishing powder, alumina has the advantages of high cost performance, good brightness, and strong cutting force. The wear resistance has received the same attention from the market as other indicators. The quality of wear resistance directly affects the grade and price of alumina polishing powder. Improving wear resistance is one of the key technical points for saving energy and reducing consumption and increasing product profits. [0003] First of all, most of the existing alumina polishing powders are sintered once in a high-temperature sintering kiln, and this traditional process tends to reduce the self-sharpness of alumina products, making alumina polishing powders prone to short service life, non-wear resistance, etc. The problem is that it is easy to polish...

AI Technical Summary

Problems solved by technology

[0003] First of all, most of the existing alumina polishing powders are sintered once in a high-temperature sintering kiln, and this traditional process tends to reduce the self-sharpness of alumina products, making alumina polishing powders prone to short service life, non-wear resistance, etc. The problem is that it is easy to polish fatigue. Secondly, when the polishing powder is used, its cutting ability is weak, which makes the polishing speed slow, which in turn leads to low polishing efficiency.

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