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A kind of preparation method of nano-ceramic bond

A vitrified bond and nanotechnology, which is applied in the manufacture of tools, clay products, metal processing equipment, etc., can solve the problems of low strength of vitrified bond, poor fatigue resistance, high sintering temperature, etc., and achieve short reaction time and high bending strength The effect of large and low reaction temperature

Active Publication Date: 2021-03-12
临颍德卡特新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The traditional atmospheric pressure sintering method requires high sintering temperature to prepare vitrified bond, and the obtained vitrified bond has low strength, poor impact resistance and fatigue resistance. Research low-temperature high-strength vitrified bond to realize low-temperature firing of abrasive tools

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A preparation method of nano vitrified bond, said preparation method comprises the following steps:

[0027] a, take by weighing 44g talc, 11g kaolin, 22g boron glass, 8.8g fluorite and 24.2g quartz powder respectively, cross 200 mesh sieves after grinding, and make the mixture;

[0028] b. After briquetting the mixture prepared in step a with a mold, raise the temperature up to 400°C at a rate of 10°C / min, then raise it to 1400°C at a rate of 5°C / min, and keep it warm for 8 hours. The glass frit flowing down after melting is water quenched;

[0029] c. Dry the product obtained in step b at 80°C for 16 hours, add 1.1g of nano vanadium nitride / chromium nitride composite powder (the mass ratio of vanadium nitride to chromium nitride is 1:1), grind, and pass through 200 Mesh sieve to obtain basic vitrified bond;

[0030] d. The basic vitrified bond prepared in step c is pressed into a blank by a press, and sintered in a microwave sintering furnace (sintering temperature ...

Embodiment 2

[0033] A preparation method of nano vitrified bond, said preparation method comprises the following steps:

[0034] a, take by weighing 36.5g talcum, 18.5g kaolin, 15.4g boron glass, 8.4g fluorite and 21.2g of quartz powder respectively, pass through a 200 mesh sieve after grinding to prepare the mixture;

[0035] b. After briquetting the mixture prepared in step a with a mold, raise the temperature up to 400°C at a rate of 5°C / min, then increase to 1200°C at a rate of 2°C / min, and keep it warm for 4 hours. The glass frit flowing down after melting is water quenched;

[0036] c. Dry the product obtained in step b at 120°C for 10 hours, then add 1.5g of nano-vanadium nitride / chromium nitride composite powder (the mass ratio of vanadium nitride to chromium nitride is 1:1), grind and pass 300 mesh sieves were used to obtain the basic vitrified bond;

[0037] d. The basic vitrified bond prepared in step c is pressed into a blank by a press, and sintered in a microwave sintering ...

Embodiment 3

[0040] A preparation method of nano vitrified bond, said preparation method comprises the following steps:

[0041] a, take by weighing 66.5g talcum, 26.25g kaolin, 29.75g boron glass, 14g fluorite and 38.5g quartz powder respectively, cross 200 mesh sieves after grinding, and make the mixture;

[0042] b. After briquetting the mixture prepared in step a with a mold, raise the temperature to 400°C at a rate of 8°C / min, then increase to 1350°C at a rate of 4°C / min, and keep it warm for 6 hours. The glass frit flowing down after melting is water quenched;

[0043] c. Dry the product obtained in step b at 100°C for 12 hours, then add 1.25g of nano-vanadium nitride / chromium nitride composite powder (the mass ratio of vanadium nitride to chromium nitride is 1:1), grind and pass 200 mesh sieves, obtained basic vitrified bond;

[0044] d. The basic vitrified bond prepared in step c is pressed into a blank by a press, and sintered in a microwave sintering furnace (sintering temperat...

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Abstract

The invention belongs to the field of binder preparation, and relates to a preparation method of a nano-ceramic binder. The preparation method comprises the following steps: a) taking the raw materials by mass percentage: 30-50% of talcum, 10-20% of kaolin, 15-20% of boron glass, 8-10% of fluorite, and 20-25% of quartz powder, grinding the raw materials and sieving the raw materials through a sieve being 200-300 in meshes to prepare a mixture material; b) pressing and smelting the mixture material, and performing water-quenching on the mixture material; c) drying the product in the step b), adding nano vanadium nitride / chromium nitride modifier, grinding the product and sieving the product to obtain a basic ceramic binder; and d) pressing the basic ceramic binder in the step c) to form abonder blank by a press, and sintering the bonder blank in a microwave sintering oven to prepare the ceramic bonder. The method is low in reaction time and short in reaction time, is low in productioncost, saves energy, and is easy to carry out industrially.

Description

technical field [0001] The invention belongs to the technical field of bonding agent preparation, and specifically provides a method for preparing nano-ceramic bonding agent. Background technique [0002] CBN grinding wheel has good chip capacity, heat dissipation, self-sharpening performance and stable chemical performance, which can well meet the needs of grinding and efficient grinding of difficult-to-machine materials, and has a broad application prospect. The performance of the vitrified bond is directly related to whether the excellent performance of the CBN abrasive grains can be fully exerted, which ultimately affects the grinding effect of the CBN grinding wheel. Therefore, vitrified bond is one of the key factors to study vitrified bonded CBN abrasive tools. [0003] The strength of vitrified bond is an important factor affecting the use of CBN abrasive tools. The strength of the bonding agent mainly includes two aspects: one is the strength of the bonding agent ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B33/16C04B33/13C04B33/04B24D3/14
CPCB24D3/14C04B33/04C04B33/13C04B33/16C04B2235/3886C04B2235/445C04B2235/6567C04B2235/96
Inventor 赵志伟杨宝震王顺赵小苗任瑛陈利霞毛淑芳
Owner 临颍德卡特新材料有限公司
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