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2.5d sapphire product ridge smooth processing method and polishing method including this method

A processing method and sapphire technology, applied in metal processing equipment, grinding/polishing equipment, manufacturing tools, etc., can solve the problem that the mirror effect cannot be achieved, and the 2.5D product cannot be solved with smooth ridges, curved surfaces and flat surfaces. And other issues

Active Publication Date: 2020-07-07
LENS TECH CHANGSHA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Due to the unique nature of the sapphire material, for the processing of 2.5D sapphire products, if the glass processing technology is used, the curved surface and the plane cannot be polished at all, and the mirror effect cannot be achieved; if the conventional sapphire polishing process is used, the 2.5D The problem of smooth product edges

Method used

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  • 2.5d sapphire product ridge smooth processing method and polishing method including this method
  • 2.5d sapphire product ridge smooth processing method and polishing method including this method
  • 2.5d sapphire product ridge smooth processing method and polishing method including this method

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Embodiment 1

[0038] A polishing method for 2.5D sapphire products specifically discloses a process in which four pieces of 2.5D sapphire products are processed as a product group to be processed.

[0039] The polishing method of the present embodiment specifically comprises the following steps:

[0040] Step 1, the 2.5D sapphire products in the product group to be processed are subjected to copper polishing (copper polishing process refers to the prior art);

[0041] Step 2. Smoothly polish the 2.5D sapphire product after copper polishing by a smooth processing method;

[0042] Step 3: Perform double-sided fine polishing on the 2.5D sapphire product after step 2 (refer to the prior art for the double-sided fine polishing process) to obtain the product.

[0043] The smooth processing method in the above step 2 specifically includes the following two steps:

[0044]The first step is to roughly polish the 2.5D sapphire product 1, specifically: first, put the product group to be processed in...

Embodiment 2- Embodiment 5

[0058] Embodiment 2-5 differs from embodiment 1 only in the parameters in table 1, details are as follows:

[0059] The parameter statistical table of table 1 embodiment 1-embodiment 5

[0060]

[0061] Embodiment 2-embodiment 5 adopts the parameter in table 1, all can reach following effect: the cambered surface of 2.5D sapphire product after rough throwing is without not see through, pitting, pit is bad, and roughness is less than 15nm; After fine throwing 2.5 D sapphire products have no flaws, pits, pits, brush marks, and scratches on the curved surface, and the roughness is less than 5nm; the production capacity is high (60-70S / piece), and the yield rate of a single process is 93%-95 %, the output rate is 97%-99%.

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Abstract

The invention provides a smooth processing method of an edge line of a 2.5D sapphire product. The smooth processing method comprises the following steps that 1, rough polishing is conducted on the 2.5D sapphire product, specifically, first, the 2.5D sapphire product is fixed, and an included angle being 5-25 degrees is formed between the 2.5D sapphire product and the horizontal plane, second, the2.5D sapphire product is transferred to a first polishing machine, and finally, polishing is conducted on the 2.5D sapphire product by adopting the first polishing machine; 2, precision polishing is conducted on the 2.5D sapphire product, specifically, first, the 2.5D sapphire product is placed horizontally, second, the 2.5D sapphire product is transferred to a second polishing machine, and finally, polishing is conducted on the 2.5D sapphire product by adopting the second polishing machine. The applied smooth processing method has the effects that the steps of rough polishing and precision polishing are included, and the technology is simplified; it is ensured that the roughness of the product is less than 15 nm through rough polishing, and the roughness of the product is less than 5 nm through precision polishing; and productivity and the one-time yield and the output rate of a single process are high. The invention further provides a polishing method, the technology step is simplified, productivity is improved, and the cost is reduced.

Description

technical field [0001] The invention relates to the technical field of sapphire processing, in particular to a smooth processing method for ridgelines of 2.5D sapphire products and a polishing method including the method. Background technique [0002] Sapphire is one of the hardest natural minerals on the earth except diamonds. Its basic chemical composition is aluminum oxide, and its hardness is particularly high. Therefore, it is favored in many industries such as electronics. [0003] In recent years, the development of window screens has changed from glass to sapphire, but polishing is very difficult due to the high hardness of sapphire. The 2.5D ridgeline smoothing process of traditional glass materials is as follows: the product is roughly ground to shape first, and then swept and ground with a brush and rare earth polishing powder. The traditional glass material 2.5D edge smoothing process is: 2.5D curved surface polishing (time 1800-2100S, load current 0.8-1.1A, hai...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24B1/00B24B41/00
CPCB24B1/00B24B41/00
Inventor 周群飞饶桥兵焦欣文
Owner LENS TECH CHANGSHA
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