WO1998031646A1 - Verwendung eines drahtgeflechtes - Google Patents
Verwendung eines drahtgeflechtes Download PDFInfo
- Publication number
- WO1998031646A1 WO1998031646A1 PCT/DE1998/000085 DE9800085W WO9831646A1 WO 1998031646 A1 WO1998031646 A1 WO 1998031646A1 DE 9800085 W DE9800085 W DE 9800085W WO 9831646 A1 WO9831646 A1 WO 9831646A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wire mesh
- gas purging
- gas
- channels
- elements
- Prior art date
Links
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
- B28B7/16—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes
- B28B7/18—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes the holes passing completely through the article
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
- B22D1/002—Treatment with gases
- B22D1/005—Injection assemblies therefor
-
- 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
- B28B7/342—Moulds, cores, or mandrels of special material, e.g. destructible materials which are at least partially destroyed, e.g. broken, molten, before demoulding; Moulding surfaces or spaces shaped by, or in, the ground, or sand or soil, whether bound or not; Cores consisting at least mainly of sand or soil, whether bound or not
-
- 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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
- C04B38/063—Preparing or treating the raw materials individually or as batches
- C04B38/0635—Compounding ingredients
- C04B38/0645—Burnable, meltable, sublimable materials
- C04B38/065—Burnable, meltable, sublimable materials characterised by physical aspects, e.g. shape, size or porosity
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
- C21C5/48—Bottoms or tuyéres of converters
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0087—Uses not provided for elsewhere in C04B2111/00 for metallurgical applications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/05—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ
Definitions
- the invention relates to the use of a wire mesh covered with a combustible material and assembled as a self-supporting shaped body.
- Such a wire mesh which is, for example, plastic-coated, is known, for example, for creating fences.
- the invention is directed to the second group.
- the technology described above for the formation of pore channels in refractory gas purging elements has so far prevailed, in particular for the following reasons: the channels (pore channels) which arise after the threads or tapes, which are usually made of plastic, are only allowed to have a relatively small cross-section (diameter). point, usually a maximum cross-section of 1.0 mm is aimed for. With larger cross sections, the risk of molten metal infiltration increases considerably. Plastic threads or tapes with such small cross sections, however, only have insufficient inherent stability, so that they have to be assembled in the tensioning devices mentioned. After that, they are usually cast with refractory casting compound. After the fireproof mass has set, the plastic inserts are later burned out during the usually necessary tempering and / or fire of the gas purging element.
- the invention provides a significant technical advance insofar as the tensioning devices mentioned can be dispensed with.
- the wire mesh is assembled in a cylindrical shape, for example, it is simply placed on the bottom of a mold for a gas purging plug and then cast over (refilled) with a refractory mass. After setting and demolding, the purging stone can be annealed and / or fired in order to drive out the burn-out sheathing material, so that annular channels are formed around the “wire cables” along which the treatment gas can be transported through the purging body. It is obvious that by selecting appropriate, mostly metallic materials with very small diameters (cross sections), a wire mesh can be produced with the corresponding inherent stability, which is sufficient to keep the molded body dimensionally stable when it is poured over it.
- the wrapping material can be applied in a thin to thinnest layer. It can consist of plastic, but also of wax, paraffin or similar burn-out materials.
- the inventive concept is also not subject to any restrictions with regard to the cross-sectional shape of the individual wires. Wires with round cross sections, angular cross sections or the like can be used.
- the geometry of the molded body is almost arbitrary.
- the wire mesh can have a conical shape or a truncated cone shape.
- Cylindrical shapes with angular cross sections are also conceivable; but also shaped bodies with a semicircular cross section, L- or U-shaped cross section fall under the term "shaped bodies"; The only requirement is that when it is placed on a floor, for example, it is self-supporting and this also during the further production process for the ceramic gas purging stones mentioned.
- coated wire meshes can not only be used for the production of cast gas flushing elements; of course, they can also be used when the ceramic material is pressed.
- wire mesh allows any execution forms with regard to the concrete geometry. So it can Wire mesh and thus the structure of the subsequent pore channel system. However, more or less coaxial main wires (main channels) are also conceivable, which are connected by individual cross channels (cross wires).
- a coiled course of individual wires, possibly on a wire base, is also conceivable.
- wire meshes of the types mentioned can also be assembled next to one another or coaxially with one another.
- the wire mesh can be used not only in the context of discrete gas purging elements, but also in the context of monolithic gas purging elements (gas purging devices). For example, it can be placed in the base of an electric oven and cast with monolithic ceramic material.
- Necessary gas connection elements are assigned in a manner known per se.
- the wire thickness is typically 0.1 to 1.0 mm.
- the coating can have a very small thickness (thickness) in order to make it more difficult to infiltrate the metal melt after it has been removed (for example by chemical reaction, melting or burnout).
- the thickness can be less than 0.3 mm, also less than 0.1 mm. With a small gap width, a relatively large flushing cross section is achieved due to the ring channel structure of the channels.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Structural Engineering (AREA)
- Metallurgy (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU62049/98A AU6204998A (en) | 1997-01-21 | 1998-01-12 | Use of a wire mesh |
DE19880039T DE19880039D2 (de) | 1997-01-21 | 1998-01-12 | Verwendung eines Drahtgeflechtes |
EP98904020A EP0963363A1 (de) | 1997-01-21 | 1998-01-12 | Verwendung eines drahtgeflechtes |
CA002278473A CA2278473A1 (en) | 1997-01-21 | 1998-01-12 | Use of a wire mesh |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19701806A DE19701806C2 (de) | 1997-01-21 | 1997-01-21 | Verwendung eines Drahtgeflechtes |
DE19701806.8 | 1997-01-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998031646A1 true WO1998031646A1 (de) | 1998-07-23 |
Family
ID=7817823
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1998/000085 WO1998031646A1 (de) | 1997-01-21 | 1998-01-12 | Verwendung eines drahtgeflechtes |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0963363A1 (de) |
AU (1) | AU6204998A (de) |
CA (1) | CA2278473A1 (de) |
DE (2) | DE19701806C2 (de) |
WO (1) | WO1998031646A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004026959B3 (de) * | 2004-06-02 | 2006-02-16 | Girlich, Dieter, Dr. | Verfahren zur Herstellung metallischer Gitterstrukturen |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2219382A (en) * | 1986-03-28 | 1989-12-06 | Toshin Steel Co | Bottom-blowing gas nozzle |
EP0490062A1 (de) * | 1990-12-08 | 1992-06-17 | Didier-Werke Ag | Verfahren zur Herstellung eines Gasspülsteins und Gasspülstein |
DE19504941A1 (de) * | 1995-02-15 | 1996-08-22 | Knoellinger Horst | Gasspülstein |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE58900091D1 (de) * | 1988-02-19 | 1991-05-29 | Veitscher Magnesitwerke Ag | Gasspuelstein. |
DE3823897A1 (de) * | 1988-07-14 | 1990-01-18 | Plibrico Co Gmbh | Vorrichtung und verfahren zur herstellung von feuerfesten steinen |
DE4312988A1 (de) * | 1993-04-21 | 1994-10-27 | Didier Werke Ag | Feuerfestes, keramisches Formteil und Herstellungsverfahren |
-
1997
- 1997-01-21 DE DE19701806A patent/DE19701806C2/de not_active Expired - Fee Related
-
1998
- 1998-01-12 DE DE19880039T patent/DE19880039D2/de not_active Ceased
- 1998-01-12 EP EP98904020A patent/EP0963363A1/de not_active Withdrawn
- 1998-01-12 WO PCT/DE1998/000085 patent/WO1998031646A1/de not_active Application Discontinuation
- 1998-01-12 CA CA002278473A patent/CA2278473A1/en not_active Abandoned
- 1998-01-12 AU AU62049/98A patent/AU6204998A/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2219382A (en) * | 1986-03-28 | 1989-12-06 | Toshin Steel Co | Bottom-blowing gas nozzle |
EP0490062A1 (de) * | 1990-12-08 | 1992-06-17 | Didier-Werke Ag | Verfahren zur Herstellung eines Gasspülsteins und Gasspülstein |
DE19504941A1 (de) * | 1995-02-15 | 1996-08-22 | Knoellinger Horst | Gasspülstein |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004026959B3 (de) * | 2004-06-02 | 2006-02-16 | Girlich, Dieter, Dr. | Verfahren zur Herstellung metallischer Gitterstrukturen |
Also Published As
Publication number | Publication date |
---|---|
DE19880039D2 (de) | 2000-01-05 |
DE19701806A1 (de) | 1998-07-23 |
EP0963363A1 (de) | 1999-12-15 |
CA2278473A1 (en) | 1998-07-23 |
DE19701806C2 (de) | 1998-11-19 |
AU6204998A (en) | 1998-08-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE3809246C2 (de) | ||
DE102005008900A1 (de) | Verfahren zur Herstellung gasdichter und temperaturbelastbarer Module mit keramischen Hohlfaser- oder Kapillarmembranen | |
DD285776A5 (de) | Verfahren zur herstellung eines selbsttragendes keramischer verbundkoerper | |
EP0304551B1 (de) | Spülstein und Verfahren zu dessen Herstellung | |
WO1985005584A1 (en) | Ceramic casting | |
DE50002898C5 (de) | Feuerfester keramischer Gasspülstein | |
DE3907500C1 (en) | Gas bubble brick with directed porosity and method for its manufacture | |
WO1998031646A1 (de) | Verwendung eines drahtgeflechtes | |
DE1584803C3 (de) | Verfahren zur Herstellung von großformatigen, aus feuerfestem Material bestehenden Formkörpern mit durchgehenden Öffnungen kleinen Durchmessers | |
DE19542446C2 (de) | Feuerfeste Formplatten mit Gasführungskanälen | |
DE19504941C2 (de) | Gasspülstein | |
EP0590186B1 (de) | Kern nach dem Wachsausschmelzverfahren | |
WO2004020366A1 (de) | Verbundkörper aus keramikschichten und verfahren zu dessen herstellung | |
EP0977909B1 (de) | Dünne, feinporige metallschicht | |
WO2001042517A1 (de) | Verfahren zur herstellung von injektionsdraht | |
DE19828511C2 (de) | Basischer, feuerfester keramischer Hohlkörper | |
DE4443554C1 (de) | Feuerfestes keramisches Bauteil | |
DE3633406A1 (de) | Verfahren zur herstellung geformter teile aus keramischen materialien und keramisch-metallischen verbundmaterialien | |
DE4419811C1 (de) | Gasspülstein mit Verschleißanzeige | |
WO1997028915A1 (de) | Gasspülboden für metallurgische gefässe | |
DE873383C (de) | Verfahren zur Herstellung einer Umhuellung um einen Diamant-ziehstein und nach diesem Verfahren hergestellter Diamantziehstein mit Umhuellung | |
DE19925512A1 (de) | Gießform und Gießverfahren | |
DE1527786A1 (de) | Verfahren zur Formgebung von Metallstraengen | |
DE1433072A1 (de) | Verfahren zur Herstellung von duennwandigen poroesen Metallrohren | |
DE1496702A1 (de) | Verfahren und Vorrichtungen zur Ausrichtung von Waermeleitern innerhalb einer Treibmittelmasse und zur Herstellung von Feststoff-Treibsaetzen aus ?eser |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GE HU IL IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK TJ TM TR TT UA UG US UZ VN |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GH GM KE LS MW SD SZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN ML MR NE SN TD TG |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 1998904020 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2278473 Country of ref document: CA Ref document number: 2278473 Country of ref document: CA Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 09355081 Country of ref document: US |
|
WWP | Wipo information: published in national office |
Ref document number: 1998904020 Country of ref document: EP |
|
REF | Corresponds to |
Ref document number: 19880039 Country of ref document: DE Date of ref document: 20000105 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 19880039 Country of ref document: DE |
|
NENP | Non-entry into the national phase |
Ref document number: 1998533513 Country of ref document: JP |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 1998904020 Country of ref document: EP |