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Hollow aluminum oxide ball-based composite abrasive material and preparation method and grinding tool thereof

A technology of hollow alumina and composite abrasives, applied in chemical instruments and methods, abrasives, manufacturing tools, etc., can solve problems such as falling off and not being able to play a good role in grinding

Active Publication Date: 2021-08-06
白鸽磨料磨具有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the abrasive is worn out at the tip, the larger crystals will fall off as a whole after the friction force exceeds the strength of the bond, and cannot perform well in grinding

Method used

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  • Hollow aluminum oxide ball-based composite abrasive material and preparation method and grinding tool thereof
  • Hollow aluminum oxide ball-based composite abrasive material and preparation method and grinding tool thereof
  • Hollow aluminum oxide ball-based composite abrasive material and preparation method and grinding tool thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The preparation method of the hollow alumina ball-based composite abrasive of the present embodiment, the process flow chart is as follows Figure 5 shown, including the following steps:

[0040](1) Gel preparation: Weigh 200g of pseudo-boehmite and add 550ml of deionized water. After ball milling in a ball mill tank for 2 hours, take out the slurry, heat it in a water bath at 75°C, and slowly add 80ml of dilute nitric acid (water , concentrated nitric acid volume ratio=1:7, the concentration of concentrated nitric acid is 65%) after stirring for 20min, add 600 milliliters of magnesium nitrate, lanthanum nitrate, iridium nitrate mixed solution rapidly (wherein the concentration of magnesium nitrate, lanthanum nitrate, iridium nitrate respectively 0.03, 0.01, 0.01mol / L), made into dilute colloid for later use;

[0041] (2) Coating: Weigh 1000g of hollow spherical alumina (particle size 0.5-1.0mm), then weigh 150g of the dilute colloid prepared in step 1), mix the two, a...

Embodiment 2

[0045] The preparation method of the hollow alumina ball-based composite abrasive of this embodiment is basically the same as that of Example 1, the only difference being:

[0046] (1) Gel preparation: After adding dilute nitric acid to form a sol, add 600 milliliters of magnesium nitrate, cerium nitrate, cobalt nitrate mixed solution (wherein the concentrations of magnesium nitrate, cerium nitrate, and cobalt nitrate are 0.03, 0.01, 0.01mol / L respectively ), made dilute colloid for subsequent use;

[0047] (2) Coating: Weigh 1000g of hollow spherical alumina (particle size 0.2-0.5mm), then weigh 100g of the dilute colloid prepared in step 1), mix the two, and wait until the colloid is completely adsorbed on the hollow alumina After the surface of the ball, the whole gluing process ends;

[0048] (4) Furnace firing: Put the dried hollow alumina balls with colloidal particle adhesion layer into the muffle furnace for firing, wherein the temperature of the furnace is raised fro...

Embodiment 3

[0050] The preparation method of the hollow alumina ball-based composite abrasive of this embodiment is basically the same as that of Example 1, the only difference being:

[0051] (1) Gel preparation: After adding dilute nitric acid to form a sol, add 600 milliliters of magnesium nitrate, iridium nitrate, and lanthanum nitrate mixed solution (wherein the concentrations of magnesium nitrate, iridium nitrate, and lanthanum nitrate are respectively 0.03, 0.01, 0.01mol / L ), made dilute colloid for subsequent use;

[0052] (2) Coating: Weigh 1000g of hollow spherical alumina (particle size 1.0-1.5mm), then weigh 180g of the dilute colloid prepared in step 1), mix the two, and wait until the colloid is completely adsorbed on the hollow alumina After the surface of the ball, the whole gluing process ends;

[0053] (4) Furnace firing: put the dried hollow alumina balls with colloidal particle adhesion layer into the muffle furnace for firing, wherein the temperature of the furnace i...

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Abstract

The invention belongs to the field of aluminum oxide abrasives, and particularly relates to a hollow aluminum oxide ball-based composite abrasive, a preparation method thereof and a grinding tool. The composite abrasive material comprises a hollow aluminum oxide ball base body and a ceramic corundum abrasive material compounded on the hollow aluminum oxide ball base body, the hollow aluminum oxide ball and the ceramic corundum abrasive material are both of an alpha-Al2O3 crystal structure, and the ceramic corundum abrasive material comprises a ball wall part which is embedded into the ball wall of the hollow aluminum oxide ball and is compounded with the ball wall of the hollow aluminum oxide ball into a whole, and a coating part which is coated outside the ball wall of the hollow aluminum oxide ball. According to the hollow aluminum oxide ball-based composite abrasive material, the specific hollow structure characteristic of the hollow aluminum oxide ball and the good grinding characteristic of the ceramic corundum abrasive material are combined, the grinding performance of the abrasive material is greatly improved, and the hollow aluminum oxide ball-based composite abrasive material has the advantages of being extremely high in sharpness, good in self-sharpening performance, high in shape holding force, long in service life, low in generated grinding heat and the like.

Description

technical field [0001] The invention belongs to the field of alumina abrasives, and in particular relates to a hollow alumina ball-based composite abrasive, a preparation method thereof, and an abrasive tool. Background technique [0002] Abrasives are sharp, hard materials that can be used to make abrasive tools or directly to grind and polish workpieces. There are two types of abrasives: natural abrasives and artificial abrasives. Abrasives are classified according to their hardness into two categories: superabrasives and ordinary abrasives. Since the resources of natural abrasives are limited, artificial abrasives are the mainstream products used in industrial production. Abrasives have a wide range of applications and are closely related to all aspects of people's lives, ranging from soft household detergents to the grinding of precision machinery and the development of aerospace technology. High-precision grinding technology is inseparable from high-efficiency, high-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/14B24D3/34
CPCC09K3/1436C09K3/1409B24D3/346
Inventor 王学涛边华英王焱
Owner 白鸽磨料磨具有限公司