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Single-surface pressure grouting forming method of ITO rotating target blank body and mold

A technology of grouting molding and rotating targets, which is applied in die-casting molds, ceramic molding machines, manufacturing tools, etc., which can solve the problems of easy interlayers and other problems, and achieve the effects of reducing raw material costs, increasing density, and small body processing volume

Active Publication Date: 2017-07-28
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defect that interlayers are easily produced in the grouting molding process of the rotary target blank, and provide a single-side centrifugal pressure grouting molding method for the ITO rotary target blank with uniform structure and no interlayer and mold

Method used

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  • Single-surface pressure grouting forming method of ITO rotating target blank body and mold
  • Single-surface pressure grouting forming method of ITO rotating target blank body and mold
  • Single-surface pressure grouting forming method of ITO rotating target blank body and mold

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Embodiment

[0034] Embodiment: After the top mold 1, the bottom mold 2, the left half mold 3, and the right half mold 4 are closed, pressurize and seal them with a jack or other fixtures and fix them on the cylindrical fixed table 15 of the rotary platform 14 . Take the prepared ITO slurry with a solid phase content of 85%, a viscosity lower than 600mPa·s, and add a small amount of defoamer, and use an air pump to pump the slurry into the cylindrical cavity 11 from the grouting pipe 7 until the slurry The material slightly exposes the outlet of the transparent exhaust pipe 9, indicating that the cavity 11 has been filled. Then close the valves of the grouting pipe 7 and the exhaust pipe 9, and the compressed air with an initial pressure of 0.3 MPa is introduced from the pressurizing pipe 6, and the gas passes through the micropores of the cylindrical plaster mold 203 to the ITO slurry in the cavity 11. Pressurize the material evenly, start the rotating platform 14 after starting to press...

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Abstract

The invention discloses a single-surface pressure grouting forming method of an ITO rotating target blank body and a mold. The mold is arranged on a rotating platform, and is provided with a cylindrical molding cavity inside for accommodating pulp; micro holes are formed in the mold wall on the inner side and the outer side of the cylindrical molding cavity; the pulp is injected in the cylindrical molding cavity of the mold; and when the mold rotates to form a centrifugating effect, compressed air is fed in the cylindrical molding cavity through the micro holes in the mold wall on the inner side of the cylindrical molding cavity for single-surface pressurization to the pulp from inside to outside, so that water in the pulp is discharged by the micro holes in the mold wall on the outer side of the cylindrical molding cavity to form the ITO rotating target blank body. The centrifugal grouting formation is adopted to combine with the single-surface ventilation pressurization and single-surface drainage modes; the pulp has no need to feed in the forming process; and the formed blank body is uniform in structure, cannot generate the interlayer defect, and further improves the density. The inner side of the formed cylindrical blank body cannot be bonded with the mold, so that the demolding yield rate is higher, and the process is simpler and more convenient.

Description

technical field [0001] The invention relates to a method for forming a rotary ceramic target body and a mold used therefor, in particular to a single-side centrifugal pressure grouting molding method and mold for an ITO rotary target body. Background technique [0002] ITO is the abbreviated name of Tin-doped Indium Oxide. The meaning of ITO refers to a kind of indium tin oxide material. The ITO rotary target body refers to the cylindrical blank made of indium tin oxide before sintering. The inner diameter is generally 150~200mm, the outer diameter is 165~220mm, and the cylinder height is 300~350mm. [0003] At present, the molding methods of the ITO rotating target blank usually include rubber sheath dry powder cold isostatic pressing and grouting molding using ordinary gypsum as the mold. Chinese patents (CN 103193262 A, CN 103787651 A) and others have reported methods for preparing high-density ITO targets by cold isostatic pressing. After cold isostatic pressing, the de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28B1/26B28B1/28
CPCB28B1/261B28B1/264B28B1/265B28B1/28
Inventor 杨硕刘冠鹏方宏
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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