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Ultrafine diamond grinding wheel and preparation method thereof

A diamond grinding wheel and grinding wheel technology are applied in the field of ultra-fine diamond grinding wheel and its preparation, which can solve the problems of needing degreasing and dewaxing, small grinding wheel size and high organic content, and achieve the effect of uniform internal structure and good fluidity.

Active Publication Date: 2018-03-16
CHINA BUILDING MATERIALS ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult to ensure the uniform dispersion of diamond and glass binder in the dry forming process, and the uniformity of the internal structure of the grinding wheel after firing cannot be guaranteed, and because the size of the grinding wheel is small and the abrasive grain size is fine, it is difficult to ensure its uniformity and batch size. Time-to-time stability; colloidal molding such as hot wax injection molding and injection molding can ensure uniformity, but due to the high content of organic matter, the product rejection rate is high, and degreasing and dewaxing are required, which is time-consuming and energy-consuming

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0040] A kind of preparation method of ultrafine diamond grinding wheel that one embodiment of the present invention proposes, it comprises:

[0041] 1) Dissolve acrylamide (AM) and N,N'-methylenebisacrylamide (MBAM) in water to obtain a premix; the mass of acrylamide and N,N'-methylenebisacrylamide in the premix A score of 10-20%;

[0042] 2) mixing the dispersant, plasticizer, regulator, defoamer and the premix to obtain a basic mixed solution; the pH of the basic mixed solution is 9-10;

[0043] 3) mixing the abrasive material and the glass adhesive in a weight ratio of 70-80:20-30 to obtain a powder;

[0044] 4) mixing the powder and the base mixture, grinding, and vacuum degassing to obtain abrasive slurry;

[0045] 5) adding a curing agent solution to the abrasive slurry, stirring evenly, injecting into a mold to solidify, demoulding and drying to obtain a grinding wheel blank;

[0046] 6) heating the grinding wheel green body at a heating rate of less than 0.5°C / min ...

Embodiment 1

[0068] A kind of preparation method of ultrafine diamond grinding wheel that one embodiment of the present invention proposes, it comprises:

[0069] 1) 165g of acrylamide and 11g of N,N'-methylenebisacrylamide were dissolved in 824g of water to obtain a premix solution with a mass fraction of 17.6%;

[0070] 2) Mix 8 g of ammonium polyacrylate, 3 mL of glycerin, 0.5 mL of defoamer and the premixed liquid, adjust the pH to 9-10 with ammonia water, and obtain the basic mixed liquid;

[0071] 3) Mix 700g of diamond, 50g of silicon carbide and 250g of glass adhesive to obtain a powder;

[0072] Wherein, the components of the glass adhesive, by weight ratio, include:

[0073] Na 2 CO 3 : 8.5%,

[0074] MgO: 0.5%,

[0075] Al 2 o 3 : 4.6%,

[0076] SiO 2 : 6.5%,

[0077] CaCO 3 : 0.9%,

[0078] ZnO: 8.0%,

[0079] ZrO 2 : 1.5%,

[0080] Bi 2 o 3 : 47.5%,

[0081] h 3 BO 3 :twenty two%;

[0082] The average particle size of diamond abrasive is 0.7um, and the ave...

Embodiment 2

[0088] A kind of preparation method of ultrafine diamond grinding wheel that one embodiment of the present invention proposes, it comprises:

[0089] 1) Dissolve 180g of acrylamide and 20g of N,N'-methylenebisacrylamide in 800g of water to obtain a premixed solution with a mass fraction of 20%;

[0090] 2) Mix 12g of ammonium polymethacrylate, 1mL of glycerin, 0.3mL of defoamer and the premixed solution, and adjust the pH to 9-10 with ammonia water to obtain the basic mixed solution;

[0091] 3) Mix 750g of diamond, 50g of silicon carbide and 200g of glass adhesive to obtain a powder;

[0092] Wherein, the components of the glass adhesive, by weight ratio, include:

[0093] Na 2 CO 3 : 8.7%,

[0094] MgO: 0.3%,

[0095] Al 2 o 3 : 5%,

[0096] SiO 2 : 6.5%,

[0097] CaCO 3 : 1.2%,

[0098] ZnO: 8.0%,

[0099] ZrO 2 : 2.0%,

[0100] Bi 2 o 3 : 46.3%,

[0101] h 3 BO 3 :twenty two%;

[0102] The average particle size of diamond abrasive is 0.5um, and the ave...

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Abstract

The invention relates to an ultrafine diamond grinding wheel and a preparation method thereof. The preparation method comprises the following steps: (1) dissolving acrylamide and N,N'-methylenebisacrylamide into water to obtain a premixed liquid; (2) mixing a dispersing agent, a plasticizer, a modifier, a defoaming agent and the premixed liquid to obtain a basic mixed liquid; (3) mixing an abrasive material and a glass binder to obtain powder; (4) mixing the powder and the basic mixed liquid, performing grinding, and performing degassing to obtain an abrasive material slurry; (5) adding a curing agent solution into the abrasive material slurry, performing uniform stirring, injecting the stirred material into a mold for curing, performing demoulding, and performing drying to obtain a greenbody of the grinding wheel; and (6) roasting the green body of the grinding wheel to obtain the ultrafine diamond grinding wheel. The ultrafine diamond grinding wheel provided by the invention can realize high-efficiency, ultra-smoothness, low-damage grinding and polishing processing of zirconium oxide core-insertion products, and has a uniform structure, high processing efficiency, and low abrasion consumption.

Description

technical field [0001] The invention relates to a grinding wheel and a preparation method thereof, in particular to an ultrafine diamond grinding wheel and a preparation method thereof. Background technique [0002] Optical fiber ceramic ferrule, also known as ceramic ferrule body, is a precision-aligned cylinder in the fiber optic connector plug, with a microhole in the center for fixing the optical fiber. It is a high-precision special ceramic element made of nano-zirconia (ZrO2) material through a series of formulas and processing. Throwing puts forward extremely high demands. Ferrule end processing requires the use of extremely fine-grained diamond micro-grinding wheels. [0003] At present, diamond micro-grinding wheels mainly include dry mixed pressing molding, hot wax injection molding and injection molding processes. It is difficult to ensure the uniform dispersion of diamond and glass binder in the dry forming process, and the uniformity of the internal structure...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/528C04B35/622C04B35/63B24D18/00
Inventor 李要辉徐磊王晋珍
Owner CHINA BUILDING MATERIALS ACAD
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