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Ceramic bond and preparation method thereof

A ceramic bond and mixture technology, which is applied in manufacturing tools, metal processing equipment, grinding/polishing equipment, etc., can solve the problems affecting grinding wheel grinding strength, grinding efficiency, and crystal form damage of ceramic microcrystalline abrasives. Good self-sharpening, improved sintering and temperature resistance, and no burn cracks

Active Publication Date: 2015-12-16
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

[0004] At present, a large number of studies have improved the performance of the vitrified bond by adjusting the formula and composition of the vitrified bond. For example, the Chinese patent CN103600309A discloses a bond for the manufacture of ceramic CBN grinding wheels. The basic formula consists of the following components by weight, feldspar 30 ~40 parts, 10~20 parts of clay, 10~20 parts of bentonite, 15~25 parts of boron glass, 8~12 parts of fluorite, 4~6 parts of quartz powder, with the basic formula as 100%, add 5~10 parts of titanium oxide %, cryolite 6-8%, lithium carbonate 8-12%, the sintering temperature of this binder is 1350°C, when using this binder to prepare ceramic microcrystalline abrasive grinding wheel, in the process of sintering and preparing grinding wheel, due to the high The sintering temperature will damage the crystal form of the ceramic microcrystalline abrasive, which will affect the grinding strength and grinding efficiency of the grinding wheel.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The vitrified bond in this embodiment is composed of the following components in weight percent: 38% boron glass, 30% feldspar, 15% nepheline powder, 7% clay, 3% lithium carbonate, and 7% chromium oxide. The vitrified bond is granular, with an average particle size D 50 is 12.8 μm.

[0027] The preparation method of the vitrified bond of the present embodiment is, and the specific operation steps are as follows:

[0028] 1): Measure boron glass, nepheline powder, lithium carbonate, and chromium oxide according to the formula, mix them evenly, put them into a ball mill and grind them evenly to prepare mixture A;

[0029] 2): Put the mixture A prepared in step 1) into a crucible, and smelt it at a temperature of 1200° C. in an air atmosphere until it is completely melted to obtain a mixture B;

[0030] 3): Pour the mixture B prepared in step 2) into a container filled with water and water quench to obtain mixture C;

[0031] 4): Dry the mixture C prepared in step 3) an...

Embodiment 2

[0035] The vitrified bond of this embodiment is composed of the following components in weight percent: 20% boron glass, 22% feldspar, 35% nepheline powder, 5% clay, 5% lithium carbonate, and 13% chromium oxide. The vitrified bond is granular, with an average particle size D 50 is 22.9 μm.

[0036] The preparation method of the vitrified bond of the present embodiment is, and the specific operation steps are as follows:

[0037] 1): Measure boron glass, nepheline powder, lithium carbonate, and chromium oxide according to the formula, mix them evenly, put them into a ball mill and grind them evenly to prepare mixture A;

[0038] 2): Put the mixture A prepared in step 1) into a crucible, and smelt it at a temperature of 1250° C. in an air atmosphere until it is completely melted to obtain a mixture B;

[0039] 3): Pour the mixture B prepared in step 2) into a container filled with water and water quench to obtain mixture C;

[0040] 4): Dry the mixture C prepared in step 3) a...

Embodiment 3

[0044] The vitrified bond of this embodiment is composed of the following components in weight percent: 26% boron glass, 43% feldspar, 10% nepheline powder, 13% clay, 5% lithium carbonate, and 3% chromium oxide. The vitrified bond is granular, with an average particle size D 50 is 18 μm.

[0045] The preparation method of the vitrified bond of the present embodiment is, and the specific operation steps are as follows:

[0046] 1): Measure boron glass, nepheline powder, lithium carbonate, and chromium oxide according to the formula, mix them evenly, put them into a ball mill and grind them evenly to prepare mixture A;

[0047]2): Put the mixture A prepared in step 1) into a crucible, and smelt it at a temperature of 1220° C. in an air atmosphere until it is completely melted to obtain a mixture B;

[0048] 3): Pour the mixture B prepared in step 2) into a container filled with water and water quench to obtain mixture C;

[0049] 4): Dry the mixture C prepared in step 3) and ...

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Abstract

The invention relates to a ceramic bond and a preparation method thereof, and belongs to the technical field of grinding wheel bonds. The ceramic bond is prepared from, by weight, 20%-40% of borosilicate glass, 22%-43% of feldspar, 10%-35% of nepheline syenite, 5%-13% of clay, 2%-5% of lithium carbonate and 3%-13% of chromium sesquioxide. According to the ceramic bond, all the components are subjected to a synergistic effect within a limited dosage range, the firing temperature of the ceramic bond is lowered to be 1000 DEG C, high-temperature burning loss of ceramic microcrystal grinding materials is avoided, the revolving strength of a grinding wheel manufactured through the bond is improved, and the grinding linear velocity reaches 80 m / s maximally. The preparation method is easy and convenient to operate, easy to control and suitable for industrial application and popularization.

Description

technical field [0001] The invention belongs to the technical field of grinding wheel bonds, and in particular relates to a vitrified bond and a preparation method thereof. Background technique [0002] Grinding wheel bond refers to the material that binds the abrasive and ensures that the abrasive will not be damaged during the grinding process. The bonding agent exists in the abrasive tool to hold the abrasive, and there are two distributions. The bonding agent covers the abrasive or produces physical and chemical changes on the surface of the abrasive to form a transitional connection layer between the bonding agent and the abrasive, and has a certain Bonding strength: Abrasives are connected in the form of a bond bridge, and the strength of the bond bridge depends on the strength of the bond itself. Therefore, the binder should have high toughness, good high-temperature fluidity and wettability to the abrasive, a thermal expansion coefficient close to that of the abrasi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D3/14B24D3/34B24D18/00C03C10/00
Inventor 周涛杨雪峰李金勇
Owner 白鸽磨料磨具有限公司
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