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Effective sapphire fine grinding method and fine grinding solution

A sapphire and fine grinding technology, which is applied in the direction of grinding machine tools, grinding devices, polishing compositions containing abrasives, etc., can solve the problems of short service life and low grinding efficiency, so as to improve service life, avoid hard contact, and excellent penetration and cleaning effect

Active Publication Date: 2015-11-11
东莞市中微力合半导体科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a fine grinding fluid for solving the problems of low grinding efficiency and short service life of the grinding fluid configured with ultra-fine powder in the current sapphire copper polishing section.

Method used

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  • Effective sapphire fine grinding method and fine grinding solution
  • Effective sapphire fine grinding method and fine grinding solution
  • Effective sapphire fine grinding method and fine grinding solution

Examples

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Embodiment Construction

[0020] 1. Formula

[0021] In this embodiment, the sapphire fine grinding fluid includes ultra-fine high-hardness micropowder, powder lubricant, dispersant and deionized water. Among them, the ultra-fine high-hardness micropowder is preferably boron carbide as the abrasive of the fine grinding fluid, and the particle size is preferably W2.4, W1.5 and W0.5 standard micropowder, that is, the median particle size D50 is 1.6-1.8um, respectively. 0.5~0.6um and 1.1~1.3um. Configure according to the formula listed in Table 1.

[0022] Table 1. The formula of refined grinding liquid provided by the present invention

[0023]

[0024] 2. Grinding method

[0025] Refined liquid is used as it is without the addition of water or aqueous solution for dilution. The fine grinding fluid is transported into the grinder, so that the grinding disc is in contact with the surface to be ground, and the surface to be ground and the grinding disc move relatively. The export port of the fine g...

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Abstract

The invention relates to the technical field of sapphire grinding and polishing, in particular to a fine grinding solution for sapphire grinding. The fine grinding solution comprises the following components in percentage by weight: 10-15% of superfine high-hardness micro powder, 0.1-1.5% of a dispersing agent, 1-5% of a powder lubricant and the balance of deionized water, wherein the powder lubricant is graphite or hexagonal boron nitride. Through the adoption of the dispersing agent, micro powder can form a stable suspension system, so that flowing and transmission of the micro powder are facilitated, and a sol system has excellent permeation and cleaning functions to take fines generated in the grinding process away in a fluidal manner; aiming at the problem of the short service life, the powder lubricant is added in the fine grinding solution, so that a grinding contact surface has a sliding buffering effect, the powder can roll under the high pressure to prevent the superfine high-hardness micro powder from being in contact with a sapphire crystal surface and damaging a grinding material, and the service life of the fine grinding solution is prolonged; the invention further provides an efficient sapphire fine grinding method.

Description

technical field [0001] The invention relates to the technical field of sapphire grinding and polishing, in particular to a fine grinding liquid for sapphire grinding and a high-efficiency sapphire fine grinding method using the fine grinding liquid. Background technique [0002] Sapphire is a composition of a-Al 2 o 3 Its single crystal has strong inertness, good light transmission and thermal conductivity, and its Mohs hardness is as high as 9, which is second only to diamond with a Mohs hardness of 10.0. It is an excellent wear-resistant material. Due to these technical properties, it is widely used as the preferred substrate material for light-emitting diodes (LEDs). In recent years, Apple, a well-known mobile phone manufacturer, has proposed a plan to use sapphire single crystal as a mobile phone screen. Although the sapphire screen production technology is immature and cannot be used in large quantities, this concept has led smart phone manufacturers to catch up. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09G1/02B24B37/00
CPCC09G1/02
Inventor 朱联烽田多胜
Owner 东莞市中微力合半导体科技有限公司
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