Ultrafine diamond and ceramic binding agent stacked abrasive materials and preparation method thereof

A vitrified bond and stacked abrasive technology, which is applied in metal processing equipment, grinding/polishing equipment, grinding devices, etc., can solve problems such as failure to meet high-performance grinding requirements, poor internal structure uniformity, and poor diamond dispersion. Achieve the effect of uniform internal structure, broaden the processing object, and consistent resection rate

Active Publication Date: 2013-09-04
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the past, when ultra-fine-grained diamond was used to prepare resin-bonded diamond grinding wheels, due to the large specific surface area of ​​the ultra-fine diamond powder directly used, the diamond dispersion was poor, the reject rate was high in the preparation of the grinding wheel, and the internal structure of the grinding wheel was poor in uniformity and many defects. Cannot meet high-performance grinding requirements

Method used

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  • Ultrafine diamond and ceramic binding agent stacked abrasive materials and preparation method thereof
  • Ultrafine diamond and ceramic binding agent stacked abrasive materials and preparation method thereof
  • Ultrafine diamond and ceramic binding agent stacked abrasive materials and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0023] The present invention prepares ZnO-SiO 2 -Al 2 o 3 -B 2 o 3 -Na 2 O-Li 2 The raw materials used in the O ceramic bond are: SiO 2 Sol, Al 2 o 3 Sol, ZnNO 3 、H 3 BO 3 、NaNO 3 、LiNO 3 , and the content of each component is shown in the table below:

[0024] components

[0025] Take the mass fraction as 10%Al 2 o 3 130 grams of sol solution, the mass fraction is 62% nano-SiO 2 Put 50 grams of sol solution into a glass beaker, add other raw materials, and stir in a constant temperature water bath at 45°C for 30 minutes. At this time, the viscosity of the mixed sol solution is 17mpa.s, and then add 150g of superfine diamond with a particle size of W1.0 Micro powder, stirred for 30 minutes, then the slurry enters the machine through the conduit of the spray dryer, the spray pressure is 0.6MPa, the temperature inside the dryer is 320°C, the diameter of the accumulated abrasive balls sprayed out is 0.3-0.5mm, and then the material is placed in the muffl...

Embodiment 2

[0027] The present invention prepares ZnO-SiO 2 -Al 2 o 3 -B 2 o 3 -Na 2 O-Li 2 The raw materials used in the O ceramic bond are: SiO 2 Sol, Al 2 o 3 Sol, ZnNO 3 、H 3 BO 3 、NaNO 3 、LiNO 3 , and the content of each component is shown in the table below:

[0028] components

[0029] Take the mass fraction as 20%Al 2 o 3 65 grams of sol solution, the mass fraction is 62% nano-SiO 2 Add 50 grams of sol solution into a glass beaker, add other raw materials, and stir for 30 minutes in a constant temperature water bath at 45°C. At this time, the viscosity of the mixed sol solution is 25mpa.s, and then add 150g of ultra- Fine diamond powder, stirred for 30 minutes, and then the slurry enters the machine through the conduit of the spray dryer, the spray pressure is 0.7MPa, the temperature in the dryer is 310°C, and the diameter of the accumulated abrasive balls sprayed out is 0.4-0.6mm, and then the material is placed in the Calcined in a muffle furnace at a ...

Embodiment 3

[0031] The present invention prepares ZnO-SiO 2 -Al 2 o 3 -B 2 o 3 -Na 2 O-Li 2 The raw materials used in the O ceramic bond are: SiO 2 Sol, Al 2 o 3 Sol, ZnNO 3 、H 3 BO 3 、NaNO 3 、LiNO 3 , and the content of each component is shown in the table below:

[0032] components

[0033] Take the mass fraction as 25%Al 2 o 3 Sol liquid 52 grams, mass fraction is the nano-SiO of 62% 2 Add 50 grams of sol solution into a glass beaker, add other raw materials, and stir for 30 minutes in a constant temperature water bath at 45°C. At this time, the viscosity of the mixed sol solution is 30mpa.s, and then add 150g of ultra- Fine diamond powder, stirred for 30 minutes, then the slurry enters the machine through the conduit of the spray dryer, the spray pressure is 0.7MPa, the temperature in the dryer is 300°C, and the diameter of the accumulated abrasive balls sprayed out is 0.4-0.6mm, and then the material is placed in the Calcined in a muffle furnace at a calcin...

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Abstract

The invention relates to ultrafine diamond and ceramic binding agent stacked abrasive materials and a preparation method thereof. According to the ultrafine diamond and ceramic binding agent stacked abrasive materials, ultrafine diamond micro powder is added in the colloidal sol of a ceramic binding agent, a sizing agent is dried by spray mist, dry blank spherical stacked abrasive materials are obtained, and the ultrafine diamond and ceramic binding agent stacked abrasive materials can be obtained after calcinations. Stacked abrasive material particles are all spherical and even in particle size and internal organization structure. The ultrafine diamond and ceramic binding agent stacked abrasive materials can be used for preparing resin binder ultraprecise grinding wheels or diamond abrasive belts. A diamond abrasive material tool has high grinding efficiency and long grinding service life, and is mainly used for surface grinding and polishing of parts which are made of engineering ceramics, glass, hard alloy and the like.

Description

technical field [0001] The invention belongs to the technical field of grinding in material engineering, and in particular relates to superfine diamond-ceramic bond stacked abrasives for high-efficiency and precision grinding and a preparation method thereof. Background technique [0002] The three main materials for making coated abrasives are base material, binder and abrasive. The currently used coated abrasives have the following disadvantages: (1) the hardness of the abrasive is low, which reduces the grinding efficiency and reduces the application range of the coated abrasives; (2) the working layer of the coated abrasives is relatively thin, and the service life is short. And the consistent roughness cannot be obtained on the surface of the workpiece; (3) although the working layer of the coated abrasive prepared by adopting multi-layer sand planting becomes thicker, it loses the advantage of the softness of the coated abrasive. In precision grinding and polishing, i...

Claims

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Application Information

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IPC IPC(8): B24D18/00C04B30/00C04B35/14
Inventor 万隆方文俊王俊沙刘会娟
Owner HUNAN UNIV
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