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Method for eliminating ITO green body edge microcrack defects in pressure slip casting process

A technology of grouting molding and pressure elimination, applied in the direction of ceramic molding cores, ceramic molding machines, ceramic molding mandrels, etc., can solve the problems of unqualified ITO blanks, micro-crack defects, etc., and achieve the effect of eliminating micro-crack defects

Active Publication Date: 2015-07-08
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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Problems solved by technology

[0007] Finally, after the ITO body is demolded, the edge microcrack defect source is retained. In the subsequent drying process, the water in the ITO body evaporates and causes shrinkage, and because the evaporation rate and shrinkage of the edge area of ​​the ITO body If the amount is larger than the middle area, it is prone to substantial micro-crack defects, resulting in unqualified ITO blanks

Method used

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  • Method for eliminating ITO green body edge microcrack defects in pressure slip casting process
  • Method for eliminating ITO green body edge microcrack defects in pressure slip casting process
  • Method for eliminating ITO green body edge microcrack defects in pressure slip casting process

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Embodiment Construction

[0024] The present invention is a method for eliminating microcrack defects at the edge of ITO blanks during pressure grouting molding. The method aims at the causes of microcrack defects in ITO blanks in the background technology, so as to eliminate the density gradient and transition layer of ITO blanks during molding. As the main line, the micro-crack defects of the ITO body are eliminated by painting the spray material on the inner mold, so as to ensure the yield of the ITO body.

[0025] combine Figure 1-3 , first set the molding size of the ITO green body as high Gcm×length Ccm×thickness Hcm, the left inner mold and the right inner mold are used to form the ITO green body, the left inner mold and the right inner mold are both microporous molds, microporous The maximum micropore size of the mold is 2-15 μm, and the molded ITO green body is provided by ITO slurry, according to figure 1 The upper and lower dimensions of the left inner mold and the right inner mold shown a...

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Abstract

Disclosed is a method for eliminating ITO green body edge microcrack defects in the pressure slip casting process. The method comprises the steps that a glass plate is arranged on an inward concave face of a left inner mold and a contact face of a right inner mold, the glass plate is pasted on the inward concave face of the left inner mold at this moment, left long rectangular-ambulatory-plane cavities are formed at the non-pasted positions in the height direction and the length direction at equal intervals, the glass plate is pasted on the contact face of the right inner mold, right long rectangular-ambulatory-plane cavities are formed at the non-pasted positions in the height direction and the length direction at equal intervals, spraying materials are sprayed to the left long rectangular-ambulatory-plane cavities and the right long rectangular-ambulatory-plane cavities respectively to form a left long rectangular-ambulatory-plane spraying band and a right long rectangular-ambulatory-plane spraying band, and a water stopping area is formed by the left long rectangular-ambulatory-plane band and right long rectangular-ambulatory-plane band in mold closing in the forming process; the density gradient and a transition layer of an ITO green body in the forming process are eliminated through the water stopping area, it is guaranteed that the overall density and planeness of the ITO green body are consistent, and then the microcrack defects happening to the edge of the ITO green body are eliminated.

Description

technical field [0001] The invention belongs to the technical field of pressure grouting, and in particular relates to a method for eliminating micro-crack defects at the edge of an ITO green body during pressure grouting. Background technique [0002] ITO is the abbreviated name of Tin-doped Indium Oxide. The meaning of ITO refers to an indium tin oxide material. The ITO body is a body made of indium tin oxide. This article focuses on the edge microcracks of the flat ITO body Cause problem. [0003] The mold used in the molding of the flat ITO green body is as follows: figure 1 As shown, the mold is composed of a mold frame, an outer mold, an inner mold, a cavity, a vacuum channel 9, a slurry inlet channel 11 and a drainage channel 10, wherein the mold frame is divided into a left mold frame 1 and a right mold frame 2, and the outer mold is divided into It is a left outer mold 3 and a right outer mold 4, and the inner mold is divided into a left inner mold 5 and a right i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28B1/26C04B35/01
CPCB28B1/26B28B1/261B28B7/28B28B7/46
Inventor 杨硕王政红师琳璞
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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