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Preparation method of high-cutting and high-brightness alumina polishing powder

An alumina polishing powder, high-brightness technology, applied in chemical instruments and methods, inorganic chemistry, aluminum compounds, etc., can solve the problems of narrow product application range, complex production process, difficult particle size control, etc., and achieve simple and effective methods. The effect of simple process flow and strong applicability

Active Publication Date: 2017-05-24
HANGZHOU ZHIHUAJIE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the defects of the existing alumina polishing powder, such as complex production process, difficult particle size control, poor cutting force, and narrow product application range, we proposed a method for high-cutting and high-brightness alumina polishing powder, which has the advantages of simple process flow, Less investment in equipment, strong controllability of conditions, suitable for large-scale industrial production, strong cutting force, high brightness, strong adaptability, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Put the raw material boehmite with a particle size of D50=1-3μm and D90≤10μm into a hydrochloric acid solution with a concentration of 8.5mol / L, the mass ratio is 2:5, and press filter after stirring for 5 hours. Add the mass ratio of 2:1 into the reaction kettle, add deionized water, adjust the pH to 5.5, and the reaction temperature is 100°C. After ten hours of reaction, press filter, and calcinate the obtained material in a vacuum high-temperature furnace for 4 hours at a temperature of 1320°C; After the calcination is completed, put it into a pulverizer for pulverization until the particle size range is D10≥0.8μm D50=5.0μm D90≤10.0μm.

Embodiment 2

[0029] Put the raw boehmite with a particle size of D50=1-3μm and D90≤10μm into a hydrochloric acid solution with a concentration of 9mol / L, the mass ratio is 2:5, and press filter after stirring for 6 hours. The ratio of 2:1 was added to the reaction kettle, and deionized water was added to adjust the pH to 5.5, and the reaction temperature was 120°C. After ten hours of reaction, press filter, and the obtained material was calcined in a vacuum high-temperature furnace for 4 hours at a temperature of 1400°C. °C; after the calcination is completed, put it into a pulverizer for pulverization until the particle size range is D10≥0.8μm D50=5.0μm D90≤10.0μm.

Embodiment 3

[0031] Put the raw material boehmite with a particle size of D50=1-3μm and D90≤10μm into a hydrochloric acid solution with a concentration of 9.7mol / L, the mass ratio is 2:5, and press filter after stirring for 8 hours. A mass ratio of 2:1 was added to the reaction kettle, and deionized water was added to adjust the pH to 5.5, and the reaction temperature was 150°C. After ten hours of reaction, pressure filtration was performed, and the obtained material was calcined in a vacuum high-temperature furnace for 4 hours at a temperature of 1550°C; After the calcination is completed, put it into a pulverizer for pulverization, and pulverize to a particle size range of D10≥0.8μm D50=5.0μm D90≤10.0μm.

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Abstract

The invention discloses a preparation method of high-cutting and high-brightness alumina polishing powder. The method comprises the steps of raw material acid treatment, hydrothermal reaction, calcination and crushing. The preparation method is simple and effective, and is carried out by using present devices; the method allows the increase of the cutting force of alumina to have no influences on the polishing brightness; and the method has good granularity controllability and high applicability; and the alumina polishing powder prepared through the method increases the stainless steel polishing rate by 40% or above and increases the brightness by 30%.

Description

technical field [0001] The invention relates to a preparation method of polishing powder, in particular to a preparation method of high-cutting and high-brightness alumina polishing powder. Background technique [0002] Mechanical polishing is a polishing method that removes the polished convex part by cutting and plastic deformation of the material surface to obtain a smooth surface. Generally, oil stone strips, wool wheels, sandpaper, etc. are used, and manual operations are mainly used. Special parts such as the surface of a rotating body can be polished. Using auxiliary tools such as turntables, ultra-fine grinding and polishing methods can be used for high surface quality requirements. Ultra-fine polishing uses a special abrasive tool, which is pressed against the surface of the workpiece to be processed in a polishing liquid containing abrasives for high-speed rotation. The surface roughness of Ra0.008μm can be achieved by using this technology, which is the highest a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F7/22C09K3/14
CPCC01F7/22C01P2004/61C01P2004/62C09K3/1454
Inventor 郭林明郭铭忠
Owner HANGZHOU ZHIHUAJIE TECH
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