WO2001091950A1 - Plaque refractaire - Google Patents
Plaque refractaire Download PDFInfo
- Publication number
- WO2001091950A1 WO2001091950A1 PCT/BE2001/000093 BE0100093W WO0191950A1 WO 2001091950 A1 WO2001091950 A1 WO 2001091950A1 BE 0100093 W BE0100093 W BE 0100093W WO 0191950 A1 WO0191950 A1 WO 0191950A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- zone
- composition
- plate
- refractory
- passage
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/14—Closures
- B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
- B22D41/28—Plates therefor
- B22D41/30—Manufacturing or repairing thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D37/00—Controlling or regulating the pouring of molten metal from a casting melt-holding vessel
Definitions
- the present invention relates to a refractory plate, in particular for a flow control system for a molten molten metal, comprising at least two zones considering the main plane of said plate: at least one passage zone which comprises at least a through hole for said liquid metal, and of a composition chosen to withstand in particular stresses due to contact with said liquid metal flowing through the hole, - a maneuvering zone intended to conduct regulation and ensure the stopping of the flow which is intended in particular to stop the flow of the liquid metal, and of a composition different from the composition of the passage zone, chosen to resist in particular thermal shocks due to the liquid metal pressing on this maneuvering zone in the event of flow stop, and a connection for securing said zones, to form a one-piece assembly in which a printed displacement for example to said maneuvering zone is transmitted unequivocally to the or respectively to each passage zone.
- DE-A-1,935,424 claims a closure device provided with a plate which is surrounded by a refractory support element of high porosity (50-60%) with thermal insulating properties.
- EP-0832707 addresses a problem of wear at the level of the sliding surface of the refractory plates used in a system for regulating the flow of a metallurgical container.
- This document covers a multilayer refractory body consisting of a high density wear layer and at least one other layer of different physical characteristics, the thickness ratio between the wear layer and the other extending from 1: 2 to 1: 5.
- the plate is provided with a housing which receives an insert made of high-hardness metallic material (composite zirconium-molybdenum), fixed to the rest of the plate by an elastic cement.
- This insert is to prevent solidification of the metal during closing thanks to its high thermal conductivity, but it has proven to be poor in resistance to erosion.
- the insert technique is also reported in DE-A-
- a basic structure of the plate surrounds and supports an oxide ceramic insert, thanks to a mortar playing the role of thermal expansion joint.
- the basic structure itself is made of magnesium concrete.
- the ceramic insert is surrounded by an aluminous concrete.
- the interface between the main body of the plate and the insert constitutes a weak point which is highly annoying because it is subject to corrosion, to infiltration of liquid metal, to suction. air, etc.
- the aim of the present invention is to remedy the problems which arise both from the presence of this interface and also from its production which, for its part, takes time and requires the use of a cement or mortar with known particular qualities, to finally not give the expected result.
- the invention proposes a plate, all of the zones of which are produced simultaneously so as to be intimately nested one inside the other and linked unequivocally and without the possibility of gaps between them.
- said zones each take up the entire thickness of the plate and the bonding connection between said different zones is the result of co-pressing, that is to say of simultaneous pressing, in the same mold of the composition constituting the passage zone or zones and of the different composition constituting the maneuvering zone, the different compositions having been previously placed in the mold in a manner, respectively according to the zones.
- the co-pressing is followed by a consolidation heat treatment.
- the passage zone relates to the entire thickness of the refractory plate, this can advantageously be used successively in the front and back position, which is not the case for plates with insert.
- the invention also relates to a method of manufacturing the refractory plate according to the invention, in particular for a system for regulating the flow of a molten molten metal, comprising at least two zones, by considering the main plane of said system: at least a passage zone of a first determined composition, and a maneuvering zone of a second determined composition, forming the rest of the plate. Each zone extends over the entire thickness of the plate.
- the process of the invention comprises the addition to a mold, on the one hand, of one or more volumes of the composition for the passage zone (s) and, on the other hand, of a volume of the other composition for the maneuvering zone, respecting the desired geometric limits for each corresponding zone, the composition chosen for each zone being identical over the entire thickness of the plate, simultaneous pressing of the two compositions in the mold to give a desired shape and compactness to the pressed plate, and - a heat treatment to consolidate the pressed plate.
- the refractory plate according to the invention can be just as much in an upper and / or lower fixed position as in a lower or intermediate mobile position.
- Other details and particularities of the invention will emerge from the secondary claims and from the description of the drawings which are annexed to the present specification and which illustrate, by way of nonlimiting examples, both the plate of the invention and its method of manufacturing according to the invention.
- the terms "passage” and “maneuver” currently used are only used to differentiate types of different zones in the embodiments described, without limiting the substance of the invention.
- Figure 1 shows in a plan view an embodiment of a plate of the invention, in which two passage areas are enclosed in what is called the maneuvering area.
- FIG. 2 shows, also in a plan view, another embodiment of a plate of the invention, in which two passage zones are contiguous to a maneuvering zone and situated on either side of this zone .
- FIG. 3 shows, still in a plan view, a variant of a plate of the invention, in which the passage area of a given composition is surrounded by a maneuvering area of another composition.
- the passage zone 1 called part 1 below, and provided with a taphole 3 has a composition specially designed to resist the flow of molten molten metal and slag which accompany it while the operating zone 2, called main body 2 below, which is not subjected to the continuous flow of molten metal must be able to withstand the thermal shock incurred during the closing of the valve and ensure by example the positioning and / or displacement of the refractory plate.
- zones 1 and 2 extends each time over the entire thickness of the plate.
- Part 1 consists of first choice refractory grains chosen from the family of aluminas, mullites, zirconia and their compounds, of divided carbon which may be of the graphite, anthracite type; coke and carbon black, antioxidants and a thermosetting resin.
- the main body 2 which is integral with the part 1 consists mainly of refractory grains belonging to the silica-alumina system such as bauxite, andalusite, kyanite and chamotte and / or refractory grains resulting from a recycling process and in particular from recycling of these same refractory casting plates, these grains being coated and bound by a carbon bonding agent compatible with that used to bond the grains of part 1.
- the refractory grains of part 1 are made up of first quality qualities of magnesia and / or spinel MgO AI203, divided carbon, antioxidants and a thermosetting resin.
- the refractory grains of the main body 2 advantageously consist of less noble qualities belonging to the same system as those of part 1 and / or of batches resulting from a recycling process and in particular from the recycling of these same refractory casting plates. These grains of body 2 are then linked by a carbon bonding agent compatible with that of part 1.
- the part 1 and the main body 2 are compatible from the manufacturing point of view. , especially during the different stages of manufacturing (co-pressing, steaming, baking) so that the plate has sufficient cohesion between these two components 1 and 2 so that it behaves in service as a one-piece assembly.
- the two compositions of raw materials specific for the part 1 and for the main body 2 respectively, must have compacted densities and relatively close pressed densities for successful co-pressing, hence the advantage of using in all or in part, to make the main body 2, recycled materials from a reprocessing of masses from plates of the same use.
- the same carbon bonding system will be used to link the refractory grains of the constituents 1 and 2, namely the same thermosetting resin or two resins that are rheologically and thermally compatible.
- This way of doing things is a way to obtain a structural connection between part (s) 1 and body 2.
- the part 1 and the main body 2 undergo different thermal and chemical stresses during service, they are provided with agents or combinations of antioxidant agents adapted to these respective stresses.
- the advantage of the design of the plate of the invention is that it only reinforces by highly developed antioxidant systems the zones that are actually stressed, without however increasing the cost of developing the refractory plate. According to the geometry of the plate as a whole and according to the position of the tap hole (s) 3, a different design will be adopted from the set formed by the different compositions.
- the part (s) 1 can be in a landlocked position in the main body 2 (FIG. 1) or in an adjacent position relative to this main body 2 as illustrated in FIG. 2. Similarly, in the case of a linear movement plate with one or more tap holes 3, the enclosed position, shown in Figure 3, of part 1 may be preferred.
- a thin but rigid accessory can temporarily materialize the border between the part 1 and the main body 2 during the phase of deposit of the two compositions in the mold. Once the two compositions have been placed in their respective housings, the accessory is removed before pressing proper to promote intimate contact and nesting of the two compositions at the interface between part 1 and main body 2.
- either the press is provided with a core materializing said hole 3, or it is obtained by coring in the composite part produced by pressing.
- the use of a core has several advantages: - gain in terms of the quantity of noble mixture intended for part 1, no subsequent coring operation or resulting tearing or flaking defects, better surface condition of the wall constituting the tap hole 3, favorable to the resistance to erosion in service.
- the passage zone or zones 1 can be provided, at each taphole 3, with a fitting and centering system for a refractory piece (not shown) contiguous with the pouring system.
- Each hole 3 is materialized by a part 1, the two parts 1 being located in the landlocked position in a main body 2.
- the parts 1 and the main body 2 are compressed on a hydraulic press; the monobloc plate obtained has two parallel main faces themselves formed by the coplanar faces of the two components 1 and 2. After baking and baking in a protected atmosphere, the refractory composite plate obtained has all the guarantees of cohesion and has a very quite satisfactory.
- Example 2 (FIG. 2) In this example, the same compositions are used as in Example 1 for the parts 1 and the main body 2 but the parts 1 are in an adjacent position relative to the main body 2.
- the composite plate according to this design also performs very well in service.
- compositions used to make the two constituents 1 and 2 are the same as those of Example 1.
- the general shape and design of the plate of the invention are the same as in Example 1, Figure 1, but this time the composition of the main body consists of grains from a recycling process of plates, to which is added a carbon agent consisting of graphite at a rate of 4%, antioxidant and resin.
- a plate is made up of a part 1 based on magnesia for the aggregate and the fine fraction (90% by weight), carbon in the form of graphite (5%), resin and antioxidants for the balance.
- the main body 2 is made from magnesium aggregates from a recycling process for 75% by weight, first-use magnesia fines for 15% by weight, the carbon agent being the same as for part 1 .
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2001261931A AU2001261931A1 (en) | 2000-05-29 | 2001-05-28 | Refractory plate |
JP2001587951A JP2004515358A (ja) | 2000-05-29 | 2001-05-28 | 耐火プレート |
EP01935839A EP1289695A1 (fr) | 2000-05-29 | 2001-05-28 | Plaque refractaire |
BR0111243-0A BR0111243A (pt) | 2000-05-29 | 2001-05-28 | Placa refratária |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE2000/0356A BE1013540A3 (fr) | 2000-05-29 | 2000-05-29 | Plaque refractaire. |
BE2000/0356 | 2000-05-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001091950A1 true WO2001091950A1 (fr) | 2001-12-06 |
Family
ID=3896550
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/BE2001/000093 WO2001091950A1 (fr) | 2000-05-29 | 2001-05-28 | Plaque refractaire |
Country Status (9)
Country | Link |
---|---|
US (1) | US20030127780A1 (fr) |
EP (1) | EP1289695A1 (fr) |
JP (1) | JP2004515358A (fr) |
KR (1) | KR20030010651A (fr) |
CN (1) | CN1431943A (fr) |
AU (1) | AU2001261931A1 (fr) |
BE (1) | BE1013540A3 (fr) |
BR (1) | BR0111243A (fr) |
WO (1) | WO2001091950A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100804961B1 (ko) * | 2001-12-21 | 2008-02-20 | 주식회사 포스코 | 장입래들용 알시카질 내화벽돌 조성물 |
CN111883702A (zh) * | 2019-05-03 | 2020-11-03 | 孚能科技(赣州)股份有限公司 | 电池、电池盒及车辆 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9821371B2 (en) * | 2013-03-21 | 2017-11-21 | Krosakiharima Corporation | Refractory material and casting nozzle |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2065278A (en) * | 1979-12-14 | 1981-06-24 | Flogates Ltd | Composite moulded refractory articles amd their manufacture |
GB2095612A (en) * | 1981-04-01 | 1982-10-06 | Thornton James Menzies | Improve monoblock one-piece pouring stopper |
WO1988006500A1 (fr) * | 1987-02-28 | 1988-09-07 | Thor Ceramics Limited | Produit refractaire tubulaire |
US5335833A (en) * | 1992-09-14 | 1994-08-09 | Vesuvius Crucible Company | Zirconia graphite slide gate plates |
WO1995034395A1 (fr) * | 1994-06-15 | 1995-12-21 | Vesuvius France S.A. | Piece de coulee comportant une couche externe apte a former une couche impermeable aux gaz et procede de mise en ×uvre |
WO1997043590A1 (fr) * | 1996-05-16 | 1997-11-20 | North American Refractories Co. | Procede de co-moulage destine a la production de materiaux refractaires sans chauffer ou cuire le materiau refractaire |
EP0832707A2 (fr) * | 1996-09-18 | 1998-04-01 | Didier-Werke Ag | Corps d'usure réfractaire à couches multiples |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3613965A (en) * | 1969-06-25 | 1971-10-19 | United States Steel Corp | Operating and loading mechanism for slidable gates |
GB2109099B (en) * | 1981-11-05 | 1985-07-24 | Glaverbel | Composite refractory articles and method of manufacturing them |
JPH11307633A (ja) * | 1997-11-17 | 1999-11-05 | Sony Corp | 低誘電率膜を有する半導体装置、およびその製造方法 |
-
2000
- 2000-05-29 BE BE2000/0356A patent/BE1013540A3/fr not_active IP Right Cessation
-
2001
- 2001-05-28 EP EP01935839A patent/EP1289695A1/fr not_active Withdrawn
- 2001-05-28 KR KR1020027016309A patent/KR20030010651A/ko not_active Application Discontinuation
- 2001-05-28 BR BR0111243-0A patent/BR0111243A/pt not_active IP Right Cessation
- 2001-05-28 AU AU2001261931A patent/AU2001261931A1/en not_active Abandoned
- 2001-05-28 JP JP2001587951A patent/JP2004515358A/ja active Pending
- 2001-05-28 CN CN01810493A patent/CN1431943A/zh active Pending
- 2001-05-28 US US10/296,903 patent/US20030127780A1/en not_active Abandoned
- 2001-05-28 WO PCT/BE2001/000093 patent/WO2001091950A1/fr not_active Application Discontinuation
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2065278A (en) * | 1979-12-14 | 1981-06-24 | Flogates Ltd | Composite moulded refractory articles amd their manufacture |
GB2095612A (en) * | 1981-04-01 | 1982-10-06 | Thornton James Menzies | Improve monoblock one-piece pouring stopper |
WO1988006500A1 (fr) * | 1987-02-28 | 1988-09-07 | Thor Ceramics Limited | Produit refractaire tubulaire |
US5335833A (en) * | 1992-09-14 | 1994-08-09 | Vesuvius Crucible Company | Zirconia graphite slide gate plates |
WO1995034395A1 (fr) * | 1994-06-15 | 1995-12-21 | Vesuvius France S.A. | Piece de coulee comportant une couche externe apte a former une couche impermeable aux gaz et procede de mise en ×uvre |
WO1997043590A1 (fr) * | 1996-05-16 | 1997-11-20 | North American Refractories Co. | Procede de co-moulage destine a la production de materiaux refractaires sans chauffer ou cuire le materiau refractaire |
EP0832707A2 (fr) * | 1996-09-18 | 1998-04-01 | Didier-Werke Ag | Corps d'usure réfractaire à couches multiples |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100804961B1 (ko) * | 2001-12-21 | 2008-02-20 | 주식회사 포스코 | 장입래들용 알시카질 내화벽돌 조성물 |
CN111883702A (zh) * | 2019-05-03 | 2020-11-03 | 孚能科技(赣州)股份有限公司 | 电池、电池盒及车辆 |
CN111883702B (zh) * | 2019-05-03 | 2023-04-18 | 孚能科技(赣州)股份有限公司 | 电池、电池盒及车辆 |
Also Published As
Publication number | Publication date |
---|---|
JP2004515358A (ja) | 2004-05-27 |
BE1013540A3 (fr) | 2002-03-05 |
BR0111243A (pt) | 2003-06-03 |
US20030127780A1 (en) | 2003-07-10 |
CN1431943A (zh) | 2003-07-23 |
KR20030010651A (ko) | 2003-02-05 |
EP1289695A1 (fr) | 2003-03-12 |
AU2001261931A1 (en) | 2001-12-11 |
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