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Glass-ceramics ceramic bond and method for preparing CBN grinding wheel with the same

A ceramic bond, glass-ceramic technology, applied in the direction of manufacturing tools, metal processing equipment, abrasives, etc., can solve the problems that are not given, the grinding wheel does not meet the requirements of ultra-high-speed grinding, and only emphasizes the flexural strength. Achieve stable performance, strong holding force and good wettability

Active Publication Date: 2019-04-02
ZHENGZHOU RES INST FOR ABRASIVES & GRINDING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the binders applied for in some invention patents belong to the category of glass-ceramics, the specific crystallization and nucleation processes are not given, and these inventions only emphasize the flexural strength. High impact toughness is not involved, and the prepared grinding wheel still cannot meet the requirements of ultra-high-speed grinding

Method used

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  • Glass-ceramics ceramic bond and method for preparing CBN grinding wheel with the same
  • Glass-ceramics ceramic bond and method for preparing CBN grinding wheel with the same
  • Glass-ceramics ceramic bond and method for preparing CBN grinding wheel with the same

Examples

Experimental program
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Effect test

Embodiment 1

[0038] A glass-ceramic bond, the weight percentage of each raw material is shown in the table below.

[0039]

[0040] The preparation method of above-mentioned glass-ceramic bonding agent, it specifically comprises the steps:

[0041] 1) Take each raw material in proportion, then mix them evenly, and pass through a 180# sieve 3 times after grinding;

[0042] 2) Heat the sieved mixture at a rate of 10°C / min to 1400°C for high temperature firing, and keep it warm for 2 hours;

[0043] 3) After high-temperature firing, pour the melted mixture into water for water quenching, after water quenching, wet grinding for 5 hours, dry grinding for 1 hour, and then pass through a 200# sieve to obtain the product. Its micrograph is shown in figure 1 ,from figure 1 It can be seen from the figure that the crystal grains of the glass-ceramic bond are small, with a diameter of about 5μ, and are evenly distributed in the glass matrix, playing the role of dispersion strengthening and tough...

Embodiment 2

[0054] A glass-ceramic bond, the weight percentage of each raw material is shown in the table below.

[0055]

[0056] The preparation method of above-mentioned glass-ceramic bonding agent, it specifically comprises the steps:

[0057] 1) Take each raw material in proportion, then mix them evenly, and pass through a 200# sieve 3 times after grinding;

[0058] 2) Heat the sieved mixture at a rate of 5°C / min to 1350°C for high temperature firing, and keep it warm for 1 hour;

[0059] 3) After high-temperature firing, pour the melted mixture into water for water quenching. After water quenching, wet mill for 10 hours, dry mill for 3 hours, and then pass through a 400# sieve to obtain the product.

[0060] A kind of preparation method of the above-mentioned CBN grinding wheel containing glass-ceramic bond, specifically comprises the steps:

[0061] 1) Weigh the materials according to the weight percentage of 25% of the glass-ceramic bond, 60% of the cubic boron nitride abrasi...

Embodiment 3

[0070] A glass-ceramic bond, the weight percentage of each raw material is shown in the table below.

[0071]

[0072] The preparation method of above-mentioned glass-ceramic bonding agent, it specifically comprises the steps:

[0073] 1) Take each raw material in proportion, then mix them evenly, and pass through a 150# sieve 3 times after grinding;

[0074] 2) Heat the sieved mixture at a rate of 8°C / min to 1300°C for high-temperature firing, and keep it warm for 1 hour;

[0075] 3) After high-temperature firing, pour the melted mixture into water for water quenching, after water quenching, wet grinding for 7 hours, dry grinding for 2 hours, and then pass through a 240# sieve to obtain the product.

[0076] A kind of preparation method of the above-mentioned CBN grinding wheel containing glass-ceramic bond, specifically comprises the steps:

[0077] 1) Weigh the materials according to the weight percentage of 25% of the glass-ceramic bond, 70% of the cubic boron nitride...

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Abstract

The present invention relates to a glass-ceramics ceramic bond comprising the following raw materials: 45-58wt% of SiO2, 4-10 wt% of Al2O3, 5-8wt% of Li2O, 2-4wt% of Na2O, 12-19 wt% of B2O3, 2-4wt% ofMgO, 1-3wt% of ZnO, 1-2wt% of CaO, 2-4wt% of ZrO2 and 8-11wt% of MgF2. The glass-ceramics ceramic bond of the invention has the characteristics of low firing temperature and fine crystal particles (2-6 [mu]m); the CBN grinding wheel prepared by using the bond has high strength, flexural strength of 100-160 MPa, impact strength of 10-20KJ / m<2> and stable performance, can meet the ultra-high speedgrinding of 200m / s or above.

Description

technical field [0001] The invention belongs to the technical field of grinding wheel preparation, and relates to a ceramic bond, in particular to a high-strength glass-ceramic bond and a method for preparing an ultra-high-speed CBN (cubic boron nitride) grinding wheel by using the same. Background technique [0002] With the increasing requirements of modern processing efficiency and processing accuracy, vitrified bond CBN grinding wheels are widely used in auto parts, bearings, electronics, aerospace and other industries. The abrasive grains in the grinding wheel are connected by the bond as a bridge, and the performance of the vitrified bond is directly related to the use effect of the ceramic CBN grinding wheel. Therefore, vitrified bond is one of the key factors to study vitrified CBN grinding wheel. In foreign countries, the vitrified bond formula is mainly based on chemical components. The domestic early vitrified bond formula is based on feldspar, clay, boron glass,...

Claims

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Application Information

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IPC IPC(8): B24D3/14
CPCB24D3/14
Inventor 王志起闫宁杨威鲁涛李学文
Owner ZHENGZHOU RES INST FOR ABRASIVES & GRINDING CO LTD