WO2002012140A2 - Giessform für die herstellung von keramischen rohlingen - Google Patents
Giessform für die herstellung von keramischen rohlingen Download PDFInfo
- Publication number
- WO2002012140A2 WO2002012140A2 PCT/EP2001/009167 EP0109167W WO0212140A2 WO 2002012140 A2 WO2002012140 A2 WO 2002012140A2 EP 0109167 W EP0109167 W EP 0109167W WO 0212140 A2 WO0212140 A2 WO 0212140A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- casting mold
- wear protection
- protection layer
- mold according
- water
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
-
- 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
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/26—Producing shaped prefabricated articles from the material by slip-casting, i.e. by casting a suspension or dispersion of the material in a liquid-absorbent or porous mould, the liquid being allowed to soak into or pass through the walls of the mould; Moulds therefor ; specially for manufacturing articles starting from a ceramic slip; Moulds therefor
- B28B1/261—Moulds therefor
- B28B1/262—Mould materials; Manufacture of moulds or parts thereof
Definitions
- the invention relates to a casting mold for the production of ceramic blanks from a pasty ceramic material (slip), consisting of a dimensionally stable, water-absorbent material with a smooth surface, in particular of plaster.
- the molds customary in the prior art for the production of ceramic blanks mostly consist of plaster.
- This material itself is easy to form, has relatively smooth surfaces and is also highly absorbent due to its porosity, so that the water is quickly removed from the poured pasty ceramic mass (slip), so that the blank dries accordingly quickly and can be formed early.
- gypsum and comparable absorbent materials have the disadvantage that they are relatively soft and accordingly have a low mechanical strength. For this reason, repeated use of the molds causes damage to the surfaces that come into contact with the cast-in pasty material, making it necessary to replace the mold. Attempts to give the gypsum a higher mechanical strength through appropriate additives have not led to decisive improvements.
- the service life of a mold according to the prior art comprises at most 100 production cycles.
- BESTATIGUNGSKOPIE It is therefore an object of the invention to further develop the casting mold of the type mentioned at the outset in such a way that considerably better service lives are achieved without the good water absorbency being lost.
- the invention proposes starting from the casting mold of the type mentioned that at least the surface areas of the casting mold that come into contact with the pasty ceramic material (slip) are coated with a water-permeable, porous wear protection coating which is applied by thermal spraying.
- the relatively soft material of such a mold can be easily provided with a much harder and water-permeable wear protection layer if this wear protection layer is applied by thermal spraying.
- thermal spraying the particles of the sprayed material mechanically cling to the surfaces of the mold and - depending on the choice of material - leave sufficiently large open pore spaces between them, so that good water permeability is ensured.
- the surface produced in this way is also considerably harder than the molding material, but at least as smooth as this.
- the finished blank can be easily removed from this hardened surface without leaving any damage.
- the service life is three times longer. This means that at least 300 production cycles are achieved per mold.
- the wear protection layer is advantageously made of metal. This metal layer claws during thermal spraying sustainably in the porous surface of the casting mold and also has the advantage that the layer can absorb tensile stresses particularly well, so that local loads are distributed over larger surface areas, which is advantageous for the stability of the whole Mold affects.
- Flame spraying, arc spraying, plasma spraying or high-speed flame spraying are used to apply the wear protection layer
- the thickness of the wear protection layer is advantageously 50 to 120 ⁇ m, preferably 80 ⁇ m.
- a mold made of plaster is coated with an 80 ⁇ m thick, porous layer of zinc particles from the inside, at least where it comes into contact with the paste-like ceramic mass during the production of ceramic blanks.
- zinc other suitable metals can also be used, e.g. B. corrosion-resistant steel etc.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ceramic Engineering (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Coating By Spraying Or Casting (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU78524/01A AU7852401A (en) | 2000-08-08 | 2001-08-08 | Casting mould for producing ceramic blanks |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10039488.4 | 2000-08-08 | ||
DE10039488A DE10039488A1 (de) | 2000-08-08 | 2000-08-08 | Verfahren - Metallische, thermisch gespritzte Schichten auf Naturstein, Tonwaren, Sanitär- und Tischkeramik und Gipsformen zum Verschleißschutz und Oberflächenveredelung |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002012140A2 true WO2002012140A2 (de) | 2002-02-14 |
Family
ID=7652258
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2001/009167 WO2002012140A2 (de) | 2000-08-08 | 2001-08-08 | Giessform für die herstellung von keramischen rohlingen |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU7852401A (de) |
DE (1) | DE10039488A1 (de) |
WO (1) | WO2002012140A2 (de) |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2004567A (en) * | 1933-09-08 | 1935-06-11 | Isaac V Brumbaugh | Combinations of enamel and sprayed metal |
CH476857A (de) * | 1968-03-18 | 1969-08-15 | Pregowski Zdzislaw | Sichtseitig dekorativ gestaltetes Objekt und Verfahren zu dessen Herstellung |
IT1109004B (it) * | 1978-12-05 | 1985-12-16 | Fanciullacci Spa Flli | Processo di riporto di metallo o eghe o composti metallici in strati sottili su superfici ceramiche non ricoperte da strato vetroso |
JPS62218547A (ja) * | 1986-03-18 | 1987-09-25 | Riyouka Keikinzoku Kogyo Kk | 転写層の形成方法 |
JPS62224664A (ja) * | 1986-03-26 | 1987-10-02 | Riyouka Keikinzoku Kogyo Kk | 転写層の形成方法 |
JPS63153258A (ja) * | 1986-12-17 | 1988-06-25 | Matsushita Electric Ind Co Ltd | 反応成形用成形型の製造方法 |
JPH02118058A (ja) * | 1988-10-27 | 1990-05-02 | Yoshikawa Kogyo Co Ltd | 装飾着色法 |
JPH06102821B2 (ja) * | 1992-03-25 | 1994-12-14 | 株式会社日本アルミ | 化粧板 |
JPH0754121A (ja) * | 1993-08-10 | 1995-02-28 | Ohbayashi Corp | コンクリート面の緑青仕上げ方法 |
-
2000
- 2000-08-08 DE DE10039488A patent/DE10039488A1/de not_active Ceased
-
2001
- 2001-08-08 WO PCT/EP2001/009167 patent/WO2002012140A2/de unknown
- 2001-08-08 AU AU78524/01A patent/AU7852401A/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
DE10039488A1 (de) | 2002-02-28 |
AU7852401A (en) | 2002-02-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE19716524C1 (de) | Verfahren zur Herstellung eines Körpers mit einem Hohlraum | |
DE2023121A1 (de) | Strukturierte Verkleidungstafeln und Verfahren zur Herstellung strukturierter Flaechen | |
DE10015614A1 (de) | Gesinterter Formkörper mit poröser Schicht auf der Oberfläche sowie Verfahren zu seiner Herstellung | |
DE202015009253U1 (de) | Betonelemente | |
DE1926674A1 (de) | Zusammensetzung aus organischem Harz und Keramik sowie Verfahren und Herstellung derselben | |
DE1471025A1 (de) | Verfahren zur Herstellung von Baukoerpern auf der Basis von Plaster | |
EP2555890B1 (de) | Verfahren zur herstellung eines zumindest bereichsweise einen erhöhten verschleissschutz aufweisenden gusswerkstücks | |
WO2002012140A2 (de) | Giessform für die herstellung von keramischen rohlingen | |
DE69736104T2 (de) | Leichter keramischer Schallabsorber und Verfahren zu seiner Herstellung | |
DE3540451A1 (de) | Keramikschaumfilter und verfahren zu seiner herstellung | |
EP1095923B1 (de) | Verfahren zur Erzeugung einer Selbstreinigungseigenschaft von keramischen Oberflächen | |
DE677065C (de) | Verfahren zur Herstellung von Schmuckglas | |
DE2404995A1 (de) | Verfahren zur herstellung einer teilglassierten, keramischen fliese | |
DE19958321A1 (de) | Verfahren zur Erzeugung einer Selbstreinigungseigenschaft von keramischen Oberflächen | |
DE241174C (de) | ||
DE303431C (de) | ||
DE548253C (de) | Verfahren zur Herstellung von fluessigkeitsabweisenden Salzglasuren auf Gegenstaenden aus Steinzeug, vorzugsweise von Urinalstaendern | |
DE393124C (de) | Verfahren zur Herstellung von Gegenstaenden aus keramischer Masse mit metallischer Bindeeinlage | |
DE503195C (de) | Verfahren zur Herstellung von Zementwarentwaren mit politurartig glaenzender, durchscheinender Oberflaeche | |
DE3112248C2 (de) | Verfahren zur spanlosen Formgebung von Werkstücken | |
AT215608B (de) | Kokillenauskleidung | |
DE866025C (de) | Selbsthaertender Werkstoff und Verfahren zu dessen Anwendung | |
DE2529162A1 (de) | Verfahren zur herstellung von backsteinen mit reliefstruktur | |
DE582370C (de) | Verfahren zur Herstellung von porigen Kunststeinoberflaechen | |
DE1175391B (de) | Verfahren zur Herstellung der Innenauskleidung von Schleudergiessformen |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A2 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A2 Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |