EP0919345A1 - Verfahren zum Einrichten einer mit auswechselbarer Formfläche Form für die Herstellung von Gegenständen aus Ton - Google Patents
Verfahren zum Einrichten einer mit auswechselbarer Formfläche Form für die Herstellung von Gegenständen aus Ton Download PDFInfo
- Publication number
- EP0919345A1 EP0919345A1 EP97120580A EP97120580A EP0919345A1 EP 0919345 A1 EP0919345 A1 EP 0919345A1 EP 97120580 A EP97120580 A EP 97120580A EP 97120580 A EP97120580 A EP 97120580A EP 0919345 A1 EP0919345 A1 EP 0919345A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mould
- negative
- preparing
- replaceable
- sheet
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
Links
Images
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
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/36—Linings or coatings, e.g. removable, absorbent linings, permanent anti-stick coatings; Linings becoming a non-permanent layer of the moulded article
- B28B7/366—Replaceable lining plates for press mould
-
- 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
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/34—Moulds, cores, or mandrels of special material, e.g. destructible materials
- B28B7/346—Manufacture of moulds
-
- 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
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/36—Linings or coatings, e.g. removable, absorbent linings, permanent anti-stick coatings; Linings becoming a non-permanent layer of the moulded article
Definitions
- the present invention refers to a process for preparing moulds with a replaceable moulding surface for manufacturing clay articles.
- Such moulds are made of steel, and the steel has to be subjected to a special heat treatment in order to maintain for a long time a surface hard and strong enough for the intended uses.
- a negative of metal sheet or other material capable of being drawn is formed in the mould, such negative is secured to the mould by proper means, and is subsequentely spray coated with a mixture containing from 85% to 90% of tungsten carbide and from 15% to 10% of cobalt carbide.
- This coating imparts to the material capable of being drawn and reproducing the shape of the article, very good properties of hardness together with very good properties of wear resistance in the moulding process.
- the negative to be coated is formed on replaceable blocks or inserts inside the mould, secured to the mould by proper means, and such a negative is then sprayed with the above mentioned tungsten carbide and cobalt carbide mixture.
- the mixture for coating the sheet material capable of being drawn and constituting the negative is formed by 88% of tungsten carbide and 12% of cobalt carbide.
- numeral 1 indicates a mould, 3 a sheet of a resilient material adapted to be drawn that has been formed with the profile of the clay article to be manufactured, 5 the means for securing such sheet 3 to the upper mould 1.
- the sheet After the sheet 3 has been fsstened to the mould 1, the sheet is sprayed to form a coating with a mixture 7 comprising from 85% to 90% of tungsten carbide and from 15% to 10% of cobalt carbide.
- a coating imparts to the sheet 3 very good properties of hardness and wear resistance for the molding of the clay article (not shown in the drawings).
- the sheet 3 Although protected by the coating 7, worns out and can be replaced with a new sheet in the mould 1.
- Fig. 2 illustrates a second embodiment of the invention, that is similar to that of Fig. 1, but for the sheet 3 being applied to a support 9 that in turn can be fitted in the mould as shown in Fig. 1.
- the replaceable portion includes the support 9 to which the sheet 3, coated with the mixture of tungsten carbide and cobalt carbide in the assigned percentages, has been applied.
- An optimum mixture comprises 88% of tungsten carbide and 12% of cobalt carbide.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97120580A EP0919345A1 (de) | 1997-11-25 | 1997-11-25 | Verfahren zum Einrichten einer mit auswechselbarer Formfläche Form für die Herstellung von Gegenständen aus Ton |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97120580A EP0919345A1 (de) | 1997-11-25 | 1997-11-25 | Verfahren zum Einrichten einer mit auswechselbarer Formfläche Form für die Herstellung von Gegenständen aus Ton |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0919345A1 true EP0919345A1 (de) | 1999-06-02 |
Family
ID=8227673
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97120580A Withdrawn EP0919345A1 (de) | 1997-11-25 | 1997-11-25 | Verfahren zum Einrichten einer mit auswechselbarer Formfläche Form für die Herstellung von Gegenständen aus Ton |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP0919345A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000073025A2 (en) * | 1999-05-28 | 2000-12-07 | Richard Michael Davies | Moulds for cementitious material |
NL2005214C2 (nl) * | 2010-08-11 | 2012-02-14 | Beheermij De Boer Nijmegen Bv | Een van een afdichtinrichting voorzien vormbakdeel, alsmede een dergelijke afdichtinrichting en werkwijze voor de toepassing daarvan. |
EP3249071A1 (de) * | 2016-03-21 | 2017-11-29 | Zaklady Magnezytowe "ROPCZYCE" | Formeinsatz mit erhöhter lebensdauer zum pressformen von stampfungen |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB987311A (en) * | 1962-01-27 | 1965-03-24 | Wehinger Robert | Mould wall or partition for a plaster moulding machine |
DE2010843A1 (en) * | 1967-08-10 | 1971-09-30 | Kirner, KIaOs, 7312 Kirchheim | Ceramic products mould |
FR2145066A5 (en) * | 1971-07-08 | 1973-02-16 | Sfec | Ceramic coated plaster mould - has longer life |
EP0037803A1 (de) * | 1980-04-01 | 1981-10-14 | Zanda Ab | Für die Herstellung von Dachziegeln aus Beton vorgesehene Form |
SU1380963A1 (ru) * | 1986-04-14 | 1988-03-15 | Центральное Конструкторское Бюро "Строммашина" Производственного Объединения "Красный Октябрь" | Пресс-форма пресса полусухого прессовани |
DE9111427U1 (de) * | 1991-09-13 | 1991-12-05 | Rieter-Werke Händle KG, 7750 Konstanz | Preßform für eine Dachziegelpresse |
US5445514A (en) * | 1993-09-22 | 1995-08-29 | Heitz; Lance A. | Refractory material coated metal surfaces adapted for continuous molding of concrete blocks |
-
1997
- 1997-11-25 EP EP97120580A patent/EP0919345A1/de not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB987311A (en) * | 1962-01-27 | 1965-03-24 | Wehinger Robert | Mould wall or partition for a plaster moulding machine |
DE2010843A1 (en) * | 1967-08-10 | 1971-09-30 | Kirner, KIaOs, 7312 Kirchheim | Ceramic products mould |
FR2145066A5 (en) * | 1971-07-08 | 1973-02-16 | Sfec | Ceramic coated plaster mould - has longer life |
EP0037803A1 (de) * | 1980-04-01 | 1981-10-14 | Zanda Ab | Für die Herstellung von Dachziegeln aus Beton vorgesehene Form |
SU1380963A1 (ru) * | 1986-04-14 | 1988-03-15 | Центральное Конструкторское Бюро "Строммашина" Производственного Объединения "Красный Октябрь" | Пресс-форма пресса полусухого прессовани |
DE9111427U1 (de) * | 1991-09-13 | 1991-12-05 | Rieter-Werke Händle KG, 7750 Konstanz | Preßform für eine Dachziegelpresse |
US5445514A (en) * | 1993-09-22 | 1995-08-29 | Heitz; Lance A. | Refractory material coated metal surfaces adapted for continuous molding of concrete blocks |
Non-Patent Citations (1)
Title |
---|
DATABASE WPI Section PQ Week 8839, Derwent World Patents Index; Class P64, AN 88-276907, XP002062943 * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000073025A2 (en) * | 1999-05-28 | 2000-12-07 | Richard Michael Davies | Moulds for cementitious material |
WO2000073025A3 (en) * | 1999-05-28 | 2001-02-01 | Richard Michael Davies | Moulds for cementitious material |
NL2005214C2 (nl) * | 2010-08-11 | 2012-02-14 | Beheermij De Boer Nijmegen Bv | Een van een afdichtinrichting voorzien vormbakdeel, alsmede een dergelijke afdichtinrichting en werkwijze voor de toepassing daarvan. |
EP2418057A1 (de) * | 2010-08-11 | 2012-02-15 | Beheermaatschappij De Boer Nijmegen B.V. | Formbehälterteil mit einer Dichtvorrichtung und solch eine Dichtvorrichtung sowie Anwendungsverfahren dafür |
EP3249071A1 (de) * | 2016-03-21 | 2017-11-29 | Zaklady Magnezytowe "ROPCZYCE" | Formeinsatz mit erhöhter lebensdauer zum pressformen von stampfungen |
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18D | Application deemed to be withdrawn |
Effective date: 19991203 |