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Glass-ceramics used as ultrahard material grinding wheel bond and preparation method thereof

A technology of glass-ceramic and superhard material, applied in the field of glass-ceramic and its preparation, can solve the problems of low strength, high sintering temperature, low impact toughness and the like

Inactive Publication Date: 2008-06-18
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The currently used vitrified binders are mainly glass or ceramics, so there are disadvantages such as high sintering temperature, low strength, and low impact toughness.

Method used

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  • Glass-ceramics used as ultrahard material grinding wheel bond and preparation method thereof
  • Glass-ceramics used as ultrahard material grinding wheel bond and preparation method thereof
  • Glass-ceramics used as ultrahard material grinding wheel bond and preparation method thereof

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Embodiment Construction

[0027] The raw materials used to prepare the basic glass include: industrial quartz, boric acid, aluminum oxide, zinc oxide, lithium carbonate, sodium carbonate, potassium carbonate, magnesium carbonate, etc., and sodium fluorosilicate is used as the crystal nucleus agent. The ratio range of raw materials is shown in in the table below:

[0028]

[0029] Weigh various raw materials according to the formula shown in the above table, mix them evenly by ball milling, put them into a high-alumina crucible, raise the temperature to 1300°C in an electric furnace, keep the temperature for 1 hour after reaching the predetermined temperature, pour the glass melt into water and quench it, The water-quenched glass slag is milled with a ball mill for 1h (800r / min), dried and sieved with a 200-mesh sieve for later use; the firing and crystallization process is to press the sifted glass powder into a sample, After drying, put it into a high-temperature furnace with a heating rate of 3-5°...

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Abstract

The invention relates to a microcrystal glass and preparation method used as super-hard grinding wheel bond, which adopts the method that: quartz, boracic acid, alumina, zinc oxide, lithium carbonate, sodium carbonate, potassium carbonate and magnesium carbonate are used as basic glass materials and sodium fluorosilicate is used as nucleation agent, the materials are smelted to form the glass that is quenched and then smashed to glass powder; the glass powder is pressed, molded, and sintered, and crystallized under certain temperature so as to obtain the microcrystal glass; the main crystal phase of the microcrystal glass is fluorophlogopite, the microcrystal is a hexagonal flake structure, the size of the microcrystal is 1um-2um. The microcrystal glass can be used as super-hard grinding wheel bond in place of ceramic so as to improve the strength of super-hard grinding wheel greatly, thereby improving speed and service life of grinding wheel; the invention also has integrated with excellent performances of glass and porcelain enamel, such as wear-resistant, anti-corrosion, good anti-oxidation, excellent electrical property, adjustable expansion coefficient, and good thermal stability. The invention can widely be applied as structural materials, optical materials, and architecture materials.

Description

technical field [0001] The invention relates to a glass-ceramic used as a superhard material grinding wheel binder and a preparation method thereof. Background technique [0002] Grinding wheel is an important tool in machining, it relies on bonding agent to combine loose granular abrasives together. Since the grinding wheel is subject to a large impact force and needs to rotate at a high speed during grinding, its strength is the prerequisite for safe and effective use. In the past, the bonding agents used to prepare grinding wheels included resin, rubber, metal, ceramics, glass, etc., among which vitrified bonding agents were the most. The currently used vitrified binder is mainly glass or ceramics, so it has the disadvantages of high sintering temperature, low strength, and low impact toughness. [0003] Glass-ceramic is a polycrystalline solid material in which glass and crystal coexist. It combines the excellent properties of glass and ceramics, such as high mechanica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/14C03B32/02C04B35/63
Inventor 万隆
Owner HUNAN UNIV
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