EP0920361A1 - Fireproof plate and a clamping device for a sliding gate at the outlet of a vessel containing molten metal - Google Patents
Fireproof plate and a clamping device for a sliding gate at the outlet of a vessel containing molten metalInfo
- Publication number
- EP0920361A1 EP0920361A1 EP97931607A EP97931607A EP0920361A1 EP 0920361 A1 EP0920361 A1 EP 0920361A1 EP 97931607 A EP97931607 A EP 97931607A EP 97931607 A EP97931607 A EP 97931607A EP 0920361 A1 EP0920361 A1 EP 0920361A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- plate
- side surfaces
- longitudinal axis
- clamping
- refractory
- 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.)
- Granted
Links
- 239000002184 metal Substances 0.000 title claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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
- B22D41/34—Supporting, fixing or centering means therefor
-
- 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
Definitions
- the invention relates to a refractory plate for a sliding closure according to the preamble of claim 1.
- refractory plates are provided which are not covered by a metal bandage. At least two opposite regions of the edge are tapered towards the sliding surface in a respective plate. These tapered edge areas are each intended for engagement with an adapted, beveled surface of a clamping element. The dimensions and angles of the plate are selected in the area of the bevelled surfaces from the sliding surface to the rear bearing surface in such a way that the clamping elements exert both a force component directed against the center of the plate and against the rear bearing surface.
- a each plate can have the shape of a rectangle with rounded corners or the shape of a hexagon, which is formed from two isosceles trapezoids with a common base.
- the object of the present invention is to provide a refractory plate of the type described at the outset, which, while being cheaply manufactured, has such an outer shape that the plate is in a tensioned and heated operating state and has optimal compressive stress ratios and, consequently, an increased durability is achieved with it becomes.
- the sliding closure receiving these plates should be equipped with a clamping device with which these plates can be clamped easily and quickly.
- a tensioning device is preferably provided for bracing the plate in the sliding closure, which has tensioning elements which are used to achieve a full-surface support the side surfaces of the refractory plate are each articulated in the frame and at least two of the clamping elements are slidably guided by a single clamping means against the other two clamping elements.
- FIG. 1 is a plan view of a refractory plate according to the invention held in a metallic frame
- FIG. 2 shows a side view of the plate held in the frame according to FIG. 1,
- FIG. 3 is a plan view of a slide lock housing with a clamping device for clamping the plate according to FIG. 1,
- FIG. 5 shows a section of the plate holder according to Fig.4.
- FIG. 1 shows a refractory plate 20 clamped in a metallic frame 11 with a flow opening 22.
- This plate 20 can be used as a floor or slide plate in a sliding closure (not shown) on the spout of a container containing molten metal.
- a slide lock is For example, explained and illustrated in detail in the publication EP-B 10277146. It is used in particular for ladles containing molten steel, which are usually provided in continuous casting plants.
- the refractory plate 20 consists of a heat-resistant ceramic material and it can be made in one piece or from a base material with at least one high-quality refractory insert, this refractory insert advantageously forming the flow opening 22 through which the molten steel flows in the operating state of the plate.
- the plate 20 has a hexagonal outer shape with an elongated symmetrical design.
- Two side surfaces 24, 25, each with a different length and at an obtuse angle ⁇ , extend on both sides of the plate longitudinal axis 23 and serve as bracing surfaces of the plate 20 in the metallic frame 11.
- the shorter side surfaces 24 are each arranged at an angle a between 20 ° and 50 °, but the longer side surfaces 25 are each arranged at an angle ⁇ between 10 ° and 30 ° to the longitudinal axis 23.
- the angle ⁇ is approximately 30 ° and the angle ⁇ is approximately 14 °.
- the shorter and the longer side surfaces 24, 25 serve as bracing surfaces of the plate 20 in the metallic frame 11 and thereby form a transverse edge 26 immediately following one another.
- the plate edge is formed with an end surface 27 and 28 running perpendicular to the longitudinal axis 23.
- These end faces 27, 28 have a length of approximately half the plate width.
- the flow opening 22 is arranged perpendicular to the longitudinal axis 23 and has a diameter which is approximately a third to a quarter of the plate width. With regard to the longitudinal extent of the plate 20, this flow opening is arranged offset from the middle of the plate towards the shorter side faces 24.
- the metallic frame 1 1 consists of two frame parts 1 1 'of identical dimensions, two clamping shoes 12 articulated on the latter and threaded screws 14 connecting the two frame parts.
- the latter are each pivoted laterally on a frame part 1 1' and extend through one in the other frame part 1 1 'provided bore.
- the frame parts screwed together and the clamping shoes 12 form an opening which corresponds to the outer shape of the plate and in which the plate 20 can be clamped.
- the frame 11 with the plate 20 clamped therein can be inserted into a housing of the slide closure, of which only two centering bolts 16, 17 are illustrated.
- One frame part 11 ' has a corresponding bore for receiving the bolt 17, while the other frame part expediently has a longitudinal groove 18 in which the bolt 16 is centered, so that the frame is at least in the housing due to the heating occurring in the operating state Can expand in the longitudinal direction.
- the plate 20 After the plate 20 has been worn, it can be removed from the slide housing together with the frame and a new plate can be clamped into the housing by reusing the frame.
- This explained design of the frame 11 enables the plate to be clamped in it in such a way that these shorter and longer side surfaces 24, 25 rest almost over their entire length on the clamping shoes or on the frame parts, in particular also when the outer dimensions of the plate 20 vary a few millimeters due to the manufacturing process. This can be ensured by appropriate adjustment of the threaded screws 14. This results in a further advantage of the present invention in that the plate does not have to be manufactured with narrow tolerances on its side surfaces.
- the plate 20 has two plane-parallel surfaces 21, 29, of which at least one is ground.
- the upper or the lower surface 21, 29 serves as a sliding surface which is in sliding contact with the same plate in the operating state of the plate 20.
- a refractory sleeve 32 shown in dash-dot lines, generally adjoins the surface 29 opposite the sliding surface.
- the plate can have a recess in the area of the flow opening in a manner known per se for receiving the sleeve or an extension projecting into the sleeve.
- the outer shape of the plate could also be formed by fewer or more than six corners, for example it could be octagonal, in which case the additional surfaces are advantageously arranged between the shorter and longer side surfaces 24, 25 in an approximately parallel arrangement Longitudinal axis 23 would be formed.
- the position of the flow opening 22 with respect to the longitudinal axis 23 could also lie, for example, on the connecting line between the edges 26 or elsewhere.
- 3 shows a clamping device 40 integrated in a slide housing 19 for releasably holding the refractory plate 20.
- This clamping device 40 has four clamping elements 42, 44 arranged in this housing 19, each of which forms a clamping surface, which in the clamped state each corresponds to a corresponding one Side surface 24, 25 of the plate 20 are pressed.
- these clamping elements 42, 44 are each articulated in the housing 19 in order to achieve a full-surface support on the side surfaces 24, 25 of the plate 20 and two of the clamping elements 44 are displaceably guided by a single clamping means against the other two clamping elements 42.
- These triangular clamping elements 42, 44 each have the clamping surface on their base side and they rest with their one or both slightly cambered rear sides on stop surfaces 19 'of the housing 19.
- they are provided with longitudinal grooves 48 aligned parallel to the longitudinal axis 23, in which projecting bolts 45, 46 in the housing 19 are centered with almost no play.
- These clamping elements 42, 44 thus adjust themselves when clamping a plate 20 to the respective effective angle .alpha. Or .beta. Of a side surface 24, 25 and, as a result, ensure a full-surface support which causes a uniform pressure distribution of the clamping force on the plate, which increases the durability of the plate maximized.
- the two displaceable clamping elements 44 on the longer side surface 25 are each connected via a lever 51 to a sliding block 52, which engages with a threaded rod 53 rotatably mounted on the housing 19 transversely to the displacement direction of the clamping elements 44.
- this threaded rod 53 is rotated, the two sliding blocks 52 move either inwards or outwards due to the opposite thread turns provided in them.
- the tensioning elements 44 are pressed by the levers 51 against the plate 20 and the latter is thus tensioned, but the plate is released when it is moved inwards.
- the rotation of the threaded rod 53 can be done via a hand-operated key or via an automatically acting device, not shown.
- the clamping surfaces of the clamping elements 42, 44 are dimensioned such that they cover approximately the entire length of the side surfaces of the refractory plate that are in contact with them, but advantageously have a somewhat shorter length than the corresponding plate side surfaces 24, 25 and engage in the tensioned state between the ends of these side surfaces 24, 25 without touching the side plate edges 26, 28 'in order to prevent cracks forming at these edges.
- Fig.4 and Fig.5 illustrate a variant of the Spannele element 42 and the plate 20 cooperating therewith.
- the plate 20 here has a bevel 20 'extending over the shorter side surface 24, which is intended to be attached to it on Clamping element 42 attached holding element 43 rests. This prevents the plate 20 from falling out when it is in the released state and the slide housing 19 and, with it, the plate 20, seen in the longitudinal direction, are in a vertical mounting position.
- the plate could be surrounded on its narrow side, for example with a synod tape, so that it does not fall apart after use when the tensioning elements are removed. Furthermore, it could for the purpose of insulation on this narrow side and / or on the back 29 with a flexible pad, e.g. a pyrostop paper.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Closures For Containers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH192296 | 1996-08-05 | ||
CH192296 | 1996-08-05 | ||
PCT/CH1997/000284 WO1998005451A1 (en) | 1996-08-05 | 1997-07-25 | Fireproof plate and a clamping device for a sliding gate at the outlet of a vessel containing molten metal |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0920361A1 true EP0920361A1 (en) | 1999-06-09 |
EP0920361B1 EP0920361B1 (en) | 2000-05-24 |
Family
ID=4221732
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97931607A Expired - Lifetime EP0920361B1 (en) | 1996-08-05 | 1997-07-25 | Fireproof plate and a clamping device for a sliding gate at the outlet of a vessel containing molten metal |
Country Status (8)
Country | Link |
---|---|
US (1) | US6092701A (en) |
EP (1) | EP0920361B1 (en) |
JP (1) | JP2001505130A (en) |
CN (1) | CN1078114C (en) |
AT (1) | ATE193236T1 (en) |
AU (1) | AU3535097A (en) |
DE (1) | DE59701773D1 (en) |
WO (1) | WO1998005451A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004069448A2 (en) * | 2001-11-23 | 2004-08-19 | Stopinc Aktiengesellschaft | Tightening device for a refractory plate of a sliding closure on the spout of a vessel for molten metal |
AU2012213730B2 (en) * | 2011-01-31 | 2016-09-22 | Stopinc Aktiengesellschaft | Closure plate, and a sliding closure on the spout of a container containing molten metal |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
UA72568C2 (en) * | 1999-12-10 | 2005-03-15 | Везувіус Крусібл Компані | Refractory plate for a slide gate valve controlling the melt flow |
EP1138419A1 (en) * | 2000-03-29 | 2001-10-04 | Vesuvius Crucible Company | Clamping device for a refractory- made plate of a sliding gate |
TW526315B (en) * | 2001-03-06 | 2003-04-01 | Vesuvius Crucible Co | Process for repairing a crack resistant valve plate and plate so repaired |
JP4456363B2 (en) * | 2003-12-16 | 2010-04-28 | 東京窯業株式会社 | Sliding nozzle plate |
WO2013048658A1 (en) * | 2011-09-28 | 2013-04-04 | Pdk Llc | Improved valve plate assembly for a molten metal slide gate valve |
US10587287B2 (en) | 2018-03-28 | 2020-03-10 | International Business Machines Corporation | Computer system supporting multiple encodings with static data support |
US10587284B2 (en) | 2018-04-09 | 2020-03-10 | International Business Machines Corporation | Multi-mode compression acceleration |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2821839B2 (en) * | 1978-05-19 | 1981-04-16 | Stopine AG, Zug | Slide closure for the pouring of molten metal containing containers |
US4573616A (en) * | 1982-05-24 | 1986-03-04 | Flo-Con Systems, Inc. | Valve, clamp, refractory and method |
DE3223181C2 (en) * | 1982-06-22 | 1984-07-12 | Didier-Werke Ag, 6200 Wiesbaden | Clamping device for a closure plate on a slide closure for the pouring of a container containing molten metal |
CH660313A5 (en) * | 1984-04-24 | 1987-04-15 | Stopinc Ag | METHOD FOR PRODUCING A LOCKING PLATE UNIT FOR A SLIDING LOCK. |
IL73030A (en) * | 1984-09-19 | 1989-07-31 | Yaacov Kaufman | Joint and method utilising its assembly |
JPS61159260A (en) * | 1984-12-28 | 1986-07-18 | Toshiba Ceramics Co Ltd | Molten metal discharging device |
JPS61159258A (en) * | 1984-12-29 | 1986-07-18 | Kurosaki Refract Co Ltd | Plate fixing mechanism of sliding nozzle device |
BE901948A (en) * | 1985-03-15 | 1985-09-16 | Vesuvius Internat Corp | DEVICE FOR TIGHTENING A WEAR ELEMENT OF A SLIDING CLOSURE OF A METALLURGICAL CONTAINER. |
JPH0237491Y2 (en) * | 1987-08-26 | 1990-10-11 |
-
1997
- 1997-07-25 DE DE59701773T patent/DE59701773D1/en not_active Expired - Fee Related
- 1997-07-25 EP EP97931607A patent/EP0920361B1/en not_active Expired - Lifetime
- 1997-07-25 US US09/242,010 patent/US6092701A/en not_active Expired - Fee Related
- 1997-07-25 AU AU35350/97A patent/AU3535097A/en not_active Abandoned
- 1997-07-25 WO PCT/CH1997/000284 patent/WO1998005451A1/en active IP Right Grant
- 1997-07-25 CN CN97198560A patent/CN1078114C/en not_active Expired - Fee Related
- 1997-07-25 AT AT97931607T patent/ATE193236T1/en not_active IP Right Cessation
- 1997-07-25 JP JP50742398A patent/JP2001505130A/en not_active Ceased
Non-Patent Citations (1)
Title |
---|
See references of WO9805451A1 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004069448A2 (en) * | 2001-11-23 | 2004-08-19 | Stopinc Aktiengesellschaft | Tightening device for a refractory plate of a sliding closure on the spout of a vessel for molten metal |
WO2004069448A3 (en) * | 2001-11-23 | 2006-09-21 | Stopinc Ag | Tightening device for a refractory plate of a sliding closure on the spout of a vessel for molten metal |
AU2012213730B2 (en) * | 2011-01-31 | 2016-09-22 | Stopinc Aktiengesellschaft | Closure plate, and a sliding closure on the spout of a container containing molten metal |
Also Published As
Publication number | Publication date |
---|---|
AU3535097A (en) | 1998-02-25 |
CN1078114C (en) | 2002-01-23 |
JP2001505130A (en) | 2001-04-17 |
ATE193236T1 (en) | 2000-06-15 |
WO1998005451A1 (en) | 1998-02-12 |
CN1233199A (en) | 1999-10-27 |
DE59701773D1 (en) | 2000-06-29 |
EP0920361B1 (en) | 2000-05-24 |
US6092701A (en) | 2000-07-25 |
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