KR940011137A - Pressureless molding of ceramic powder - Google Patents

Pressureless molding of ceramic powder Download PDF

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Publication number
KR940011137A
KR940011137A KR1019920020687A KR920020687A KR940011137A KR 940011137 A KR940011137 A KR 940011137A KR 1019920020687 A KR1019920020687 A KR 1019920020687A KR 920020687 A KR920020687 A KR 920020687A KR 940011137 A KR940011137 A KR 940011137A
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KR
South Korea
Prior art keywords
ceramic powder
molding method
sintering
pressureless
molding
Prior art date
Application number
KR1019920020687A
Other languages
Korean (ko)
Other versions
KR950011094B1 (en
Inventor
박정현
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박정현
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 박정현 filed Critical 박정현
Priority to KR1019920020687A priority Critical patent/KR950011094B1/en
Publication of KR940011137A publication Critical patent/KR940011137A/en
Application granted granted Critical
Publication of KR950011094B1 publication Critical patent/KR950011094B1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/04—Apparatus or processes for treating or working the shaped or preshaped articles for coating or applying engobing layers
    • B28B11/06—Apparatus or processes for treating or working the shaped or preshaped articles for coating or applying engobing layers with powdered or granular material, e.g. sanding of shaped articles
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B33/00—Clay-wares
    • C04B33/36—Reinforced clay-wares

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

본 발명은 세라믹 분말의 무가압 성형법에 관한 것으로, 좀 더 구체적으로는 본드에 충진될, 세라믹분말에 불용성 수지 용액를 첨가하여 결합시키고 소결조제를 함유한 용액을 사용하여 상기 세라믹 분말과 소결조제를 균일하게 혼합시킨 후에 열처리를 하여 성형체를 제조하는 새로운 세라믹 분말의 무가압 성형법에 관한 것이다.The present invention relates to a pressureless molding method of ceramic powder, and more particularly, to uniformly mix the ceramic powder and the sintering aid using a solution containing a sintering aid and adding an insoluble resin solution to the ceramic powder to be filled in the bond. The present invention relates to a pressureless molding method of a new ceramic powder which is heat-treated and then heat-treated to produce a molded body.

본 발명의 세라믹 분말의 무가압 성형법은 성형이 어려운 모든 다른 세라믹 분말에 어느정도 적용이 가능하며, 소결 후 소결체의 밀도, 강도 등의 값은 상압소결의 경우 종래의 소결법으로 제조한 소결체와 거의 대등한 값을 보인다. 또한 복잡형상의 성형이 가능하였고, 무가압 성형이므로 종래의 가압성형으로 만들어진 성형체에 비하여 내부에 응력의 편중이 생기지 않아 열처리시 휨 등을 방지할 수 있었다.The pressureless molding method of the ceramic powder of the present invention can be applied to all other ceramic powders which are difficult to be molded to some extent, and the values of density, strength, etc. of the sintered body after sintering are almost the same as those of the sintered body manufactured by the conventional sintering method in the case of atmospheric sintering. Shows the value. In addition, it was possible to form a complex shape, and because it is pressure-free molding, it is possible to prevent the bending during the heat treatment, because the stress does not occur inside the molded body made by the conventional press molding.

Description

세라믹 분말의 무가압 성형법Pressureless molding of ceramic powder

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

Claims (4)

세라믹 분말을 성형하는 방법에 있어서, 첫번째 목적하는 형상의 상, 하부가 개방된 몰드를 제작한 후, 하부를 거름종이로 막는 단계, 두번째 상기 몰드에 세라믹 분말을 충진시킨 후, 바인더로서 불용성 수지용액을 붓는 단계, 세번째 상기 몰드를 건조시킨후 성형체를 떼어내어 소결조제를 함유한 용액에 함침시킨 후 24시간 이상 건조시키는 단계, 및 네번째 상기 성형체를 1차 열처리하는 단계로 구성되는 것을 특징으로 하는 세라믹 분말의 무가압 성형법.In the method of molding the ceramic powder, the first step of forming a mold of the upper and lower parts of the desired shape, and then the lower part is covered with a filter paper, the second filling the ceramic powder in the mold, and then insoluble resin solution as a binder Pouring a step, drying the third mold and then removing the molded body, impregnating the solution containing the sintering aid, and drying the product for at least 24 hours; and a fourth heat treatment of the molded body. Pressureless molding of powder. 제1항에 있어서, 상기 세라믹분말은 유동성이 양호한 분무 건조한 세라믹 분말을 사용하는 것을 특징으로 하는 세라믹 분말의 무가압 성형법.The pressure-free molding method of the ceramic powder according to claim 1, wherein the ceramic powder uses spray-dried ceramic powder having good fluidity. 제1항에 있어서, 상기 불용성 수지 용액은 통상의 불용성 수지를 에틸알콜용매에 대하여 5∼10중량% 용해시켜 사용하는 것을 특징으로 하는 세라믹 분말의 무가압 성형법.The pressure-free molding method of ceramic powder according to claim 1, wherein the insoluble resin solution is used by dissolving a conventional insoluble resin in an amount of 5 to 10% by weight with respect to an ethyl alcohol solvent. 제1항에 있어서, 상기 함침은 10-3~10-4torr의 진공상태로 0.5∼1시간 동안 행해지는 것을 특징으로 하는 세라믹 분말의 무가압 성형법.The pressure-free molding method of the ceramic powder according to claim 1, wherein the impregnation is performed for 0.5 to 1 hour in a vacuum state of 10 -3 to 10 -4 torr. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920020687A 1992-11-05 1992-11-05 Non-press forming of ceramic powder KR950011094B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019920020687A KR950011094B1 (en) 1992-11-05 1992-11-05 Non-press forming of ceramic powder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019920020687A KR950011094B1 (en) 1992-11-05 1992-11-05 Non-press forming of ceramic powder

Publications (2)

Publication Number Publication Date
KR940011137A true KR940011137A (en) 1994-06-20
KR950011094B1 KR950011094B1 (en) 1995-09-28

Family

ID=19342528

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019920020687A KR950011094B1 (en) 1992-11-05 1992-11-05 Non-press forming of ceramic powder

Country Status (1)

Country Link
KR (1) KR950011094B1 (en)

Also Published As

Publication number Publication date
KR950011094B1 (en) 1995-09-28

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