CA1317104C - Refractory plate for a sliding gate at the outlet of a metallurgical vessels - Google Patents
Refractory plate for a sliding gate at the outlet of a metallurgical vesselsInfo
- Publication number
- CA1317104C CA1317104C CA000562280A CA562280A CA1317104C CA 1317104 C CA1317104 C CA 1317104C CA 000562280 A CA000562280 A CA 000562280A CA 562280 A CA562280 A CA 562280A CA 1317104 C CA1317104 C CA 1317104C
- Authority
- CA
- Canada
- Prior art keywords
- plate
- clamping
- frame
- refractory
- outlet
- 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.)
- Expired - Fee Related
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
- B22D41/08—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like for bottom pouring
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Rolling Contact Bearings (AREA)
- Sliding Valves (AREA)
- Furnace Charging Or Discharging (AREA)
Abstract
ABSTRACT
A refractory plate of rounded-oblong or oval design and having a shrunk-on ring on its periphery is to be improved by outer shaping in that an oval peripheral area (15) has, at least on one transverse head side, a clamping face (7) to receive the clamping force and is arranged transversely to the main axis (5) of the plate. This counteracts cracking, and the service life is increased.
A refractory plate of rounded-oblong or oval design and having a shrunk-on ring on its periphery is to be improved by outer shaping in that an oval peripheral area (15) has, at least on one transverse head side, a clamping face (7) to receive the clamping force and is arranged transversely to the main axis (5) of the plate. This counteracts cracking, and the service life is increased.
Description
1 3 1 7 1 0'~
~ 3843-192 The invention relates to a refraetory plate of rounded-oblong or oval design and having a shrunk-on ring applied to its peripheral area to clamp the refrac-tory plate into a metallie frame of a sliding gate at the outlet of a metallurgical vessel.
In sueh a plate as described in German Patent 33 45 539 which has slide faces on both sides and which in the event of one slide face being worn can be turned over to increase the serviee life, the shrunk-on ring holds together the refractory material in such a way that, despite the thermal stress cracks which occur at first use as a result of thermal stresses, the seeond slide faee can still be used. The relatively long, straight longitudinal faees at the plate periphery however, proved to be weak points at which the shrunk-on ring seldom fits snugly, which promotes cracking. Clamping forces of the elamping means for fixedly seeuring the plate in its metallie frame are effected at random and in eoneentrated fashion, whieh also have a similarly destruetive effeet.
In addition, an ellipse-like plate itself is known from German 'Offenlegungssehrift' 35 22 135, whieh is uneonstrain-edly supported with play in the metallie frame of the gate. In other respects, the plate has a wedge faee at the periphery for the mechanieal elamping of a composite, eorrespondingly eounter-wedged, elamping ring, whieh is intended to eounteract thermal 13171~1 2 238~3-192 stresses in the plate material. It is disadvantageous that the relatively rigid clamping ring on the contact surface to the plate creates point loads which prematurely destroy the refractory structure.
The invention provides a refractory plate having a shrunk-on ring applied to the periphery thereof to clamp the refractory pla-te in use into a metallic frame of a sliding gate at the outle-t of metallurgical vessels, wherein the peripheral area of the plate is generally elliptical and has, a-t least on one transverse head side, a clamping face provided transversely to a main axis of the ellipse of the plate, which clamping face receives the clamping force. This outer shape of the plate, having a specific clamping face at the otherwise continuously rounded circumference, permits the snug adhesion of the shrunk-on ring to the longitudinal sides of the plate during uniform complete application in the region of the clamping face, thus resulting in an improved cohesion of the plate structure and, therefore, an extended service life of the plate. This effect is additionally strengthened in that clamping forces absorbed by the specific clamping face are transmitted, substantially uniformly dis-tributed, through the plate structure to the frame side lying opposite the clamping face and acting as abu-tment which, again, protects the plate structure against destructive cracking as the resul-t of load peaks.
Preferably the plate is of symmetrical design opposing faces being arranged parallel to each other at both transverse head sides of the plate, one of these faces acts as abutment face relative to the plate frame. To this end, the two faces are `` 131710~
~ 3843-192 The invention relates to a refraetory plate of rounded-oblong or oval design and having a shrunk-on ring applied to its peripheral area to clamp the refrac-tory plate into a metallie frame of a sliding gate at the outlet of a metallurgical vessel.
In sueh a plate as described in German Patent 33 45 539 which has slide faces on both sides and which in the event of one slide face being worn can be turned over to increase the serviee life, the shrunk-on ring holds together the refractory material in such a way that, despite the thermal stress cracks which occur at first use as a result of thermal stresses, the seeond slide faee can still be used. The relatively long, straight longitudinal faees at the plate periphery however, proved to be weak points at which the shrunk-on ring seldom fits snugly, which promotes cracking. Clamping forces of the elamping means for fixedly seeuring the plate in its metallie frame are effected at random and in eoneentrated fashion, whieh also have a similarly destruetive effeet.
In addition, an ellipse-like plate itself is known from German 'Offenlegungssehrift' 35 22 135, whieh is uneonstrain-edly supported with play in the metallie frame of the gate. In other respects, the plate has a wedge faee at the periphery for the mechanieal elamping of a composite, eorrespondingly eounter-wedged, elamping ring, whieh is intended to eounteract thermal 13171~1 2 238~3-192 stresses in the plate material. It is disadvantageous that the relatively rigid clamping ring on the contact surface to the plate creates point loads which prematurely destroy the refractory structure.
The invention provides a refractory plate having a shrunk-on ring applied to the periphery thereof to clamp the refractory pla-te in use into a metallic frame of a sliding gate at the outle-t of metallurgical vessels, wherein the peripheral area of the plate is generally elliptical and has, a-t least on one transverse head side, a clamping face provided transversely to a main axis of the ellipse of the plate, which clamping face receives the clamping force. This outer shape of the plate, having a specific clamping face at the otherwise continuously rounded circumference, permits the snug adhesion of the shrunk-on ring to the longitudinal sides of the plate during uniform complete application in the region of the clamping face, thus resulting in an improved cohesion of the plate structure and, therefore, an extended service life of the plate. This effect is additionally strengthened in that clamping forces absorbed by the specific clamping face are transmitted, substantially uniformly dis-tributed, through the plate structure to the frame side lying opposite the clamping face and acting as abu-tment which, again, protects the plate structure against destructive cracking as the resul-t of load peaks.
Preferably the plate is of symmetrical design opposing faces being arranged parallel to each other at both transverse head sides of the plate, one of these faces acts as abutment face relative to the plate frame. To this end, the two faces are `` 131710~
3 ~3843-192 perpendicular to the main axis of the plate. This construction is simple and particularly advantageous in respect of the stress imposed on the plate.
A further proposal according to the invention provides that the large radii of a comparable ellipse are the two- to three-times the width of the plate. As a result thereof/ it is possible to maintain at a minimum the refractory volume and, therefore, to reduce the manufacturing costs of the plate.
The invention is described hereinafter by way of an exemplified embodiment with reference to the drawings, wherein:
Figure l shows in plan view a reEractory plate according to the invention, clamped into an adjustable linear slide frame, and Figure 2 shows a longitudinal section of the plate removed from the frame.
In the drawing, reference numeral l refers to the metallic slide frame of a sliding gate used on metallurgical vessels. In the frame 1, which can be adjusted in the longitudinal direction via a connecting rod which may be connected at 2, the ~' 1 3 1 7 1 0'1 -~- 238~3-192 oval or ellipse-shaped refractory slide plate 3 is clamped, which plate 3 has a flow opening 4, although two flow openings may be provided, and co-operates in the usual manner with an identical stationary plate (not shown) in order -to control the vessel out-let in its function as a seal. Each of the identical plates 3, designed as an oval or an ellipse with a main axis 5, according to Figure 1, is provided at its circumference with a shrunk-on ring 6 which is narrower than the plate thickness, and may be turned over by shaping both sides of the plate as slide faces.
In par-ticular, a special clamping face 7 is provided at the transverse head side of the plate 3 to make up the clamping force of a clamping device 8, the clamping jaw 9 of which is in guiding connection with a wedge part 11 which is arranged on a threaded bolt 10, said clamping jaw 9 being pivotally supported on the frame 1. The clamping jaw 9 can be moved towards or away from the clamping face 7 by appropriate turning of the threaded bolt 10 through the driving profile 12.
A further face 13 which is similar to the clamping face 7 is provided at the other transverse head side of the plate 3. Faces 7 and 13 are arranged parallel to each other, and relative to the extension of the main axis 5, transverse, especially perpendicular to main axis 5, although slight de-viations from the perpendicular may be structurally expedient.
In any event, the clamped plate 3 is supported via the face 13 relative to the frame 1 which has an appropriately designed counter-profiled face or, alternatively, a second clamping device 8.
1 3 1 7 1 0 ~Ir The plate 3 is supported on the base 14 of the frame and is detachably carried circumferentially on borders 16 of the frame, with the result that replacing or turning-over of the plate 3 is easily done when the clamping device 8 is open. In addition, the plate 3 can be clamped in the frame 1 reliably and in stress-free manner in view of its particular configuration.
A further proposal according to the invention provides that the large radii of a comparable ellipse are the two- to three-times the width of the plate. As a result thereof/ it is possible to maintain at a minimum the refractory volume and, therefore, to reduce the manufacturing costs of the plate.
The invention is described hereinafter by way of an exemplified embodiment with reference to the drawings, wherein:
Figure l shows in plan view a reEractory plate according to the invention, clamped into an adjustable linear slide frame, and Figure 2 shows a longitudinal section of the plate removed from the frame.
In the drawing, reference numeral l refers to the metallic slide frame of a sliding gate used on metallurgical vessels. In the frame 1, which can be adjusted in the longitudinal direction via a connecting rod which may be connected at 2, the ~' 1 3 1 7 1 0'1 -~- 238~3-192 oval or ellipse-shaped refractory slide plate 3 is clamped, which plate 3 has a flow opening 4, although two flow openings may be provided, and co-operates in the usual manner with an identical stationary plate (not shown) in order -to control the vessel out-let in its function as a seal. Each of the identical plates 3, designed as an oval or an ellipse with a main axis 5, according to Figure 1, is provided at its circumference with a shrunk-on ring 6 which is narrower than the plate thickness, and may be turned over by shaping both sides of the plate as slide faces.
In par-ticular, a special clamping face 7 is provided at the transverse head side of the plate 3 to make up the clamping force of a clamping device 8, the clamping jaw 9 of which is in guiding connection with a wedge part 11 which is arranged on a threaded bolt 10, said clamping jaw 9 being pivotally supported on the frame 1. The clamping jaw 9 can be moved towards or away from the clamping face 7 by appropriate turning of the threaded bolt 10 through the driving profile 12.
A further face 13 which is similar to the clamping face 7 is provided at the other transverse head side of the plate 3. Faces 7 and 13 are arranged parallel to each other, and relative to the extension of the main axis 5, transverse, especially perpendicular to main axis 5, although slight de-viations from the perpendicular may be structurally expedient.
In any event, the clamped plate 3 is supported via the face 13 relative to the frame 1 which has an appropriately designed counter-profiled face or, alternatively, a second clamping device 8.
1 3 1 7 1 0 ~Ir The plate 3 is supported on the base 14 of the frame and is detachably carried circumferentially on borders 16 of the frame, with the result that replacing or turning-over of the plate 3 is easily done when the clamping device 8 is open. In addition, the plate 3 can be clamped in the frame 1 reliably and in stress-free manner in view of its particular configuration.
Claims (4)
1. A refractory plate having a shrunk-on ring applied to the periphery thereof to clamp the refractory plate in use into a metallic frame of a sliding gate at the outlet of metallurgical vessels, wherein the peripheral area of the plate is generally elliptical and has, at least on one transverse head side, a clamping face provided transversely to a main axis of the ellipse of the plate, which clamping face receives the clamping force.
2. A plate according to claim 1, wherein, at both transverse head sides, parallel opposing faces are provided, one of which is designed to be an abutment face relative to the frame of the plate.
3. A plate according to claim 2, wherein said faces are arranged perpendicularly to the main axis.
4. A plate according to claim 1, 2 or 3, wherein the plate has longitudinal sides of a curvature such that the large radius of a comparable ellipse is the equivalent of two- to three-times the width of the plate.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3709812A DE3709812C1 (en) | 1987-03-25 | 1987-03-25 | Fireproof plate for sliding closures on the pouring of metallurgical vessels |
| DEP3709812.8 | 1987-03-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1317104C true CA1317104C (en) | 1993-05-04 |
Family
ID=6323948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000562280A Expired - Fee Related CA1317104C (en) | 1987-03-25 | 1988-03-24 | Refractory plate for a sliding gate at the outlet of a metallurgical vessels |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0306501B1 (en) |
| JP (2) | JPH01501606A (en) |
| KR (1) | KR960003719B1 (en) |
| AT (1) | ATE53521T1 (en) |
| CA (1) | CA1317104C (en) |
| DE (2) | DE3709812C1 (en) |
| WO (1) | WO1988007423A1 (en) |
| ZA (1) | ZA881035B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3900382A1 (en) * | 1989-01-09 | 1990-07-12 | Cerafer Sarl | Slide-gate closure for the pouring outlet of metallurgical casting vessels |
| JP2563881Y2 (en) * | 1991-04-19 | 1998-02-25 | 川崎炉材株式会社 | Plate brick for sliding nozzle |
| DE4339316C2 (en) * | 1993-04-03 | 1996-11-14 | Schladofsky Leopold Dipl Ing F | Fireproof closure plate for slide closures on metallurgical vessels such as ladles and on distribution channels for molten metals and method for producing the closure plate |
Family Cites Families (6)
| 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 |
| DE3345539C1 (en) * | 1983-12-16 | 1985-07-18 | Didier-Werke Ag, 6200 Wiesbaden | Fireproof locking plate for slide locks |
| DE3421205C2 (en) * | 1984-06-07 | 1986-10-30 | Metacon AG, Zürich | Device for fixing a fireproof closure plate of a slide gate valve |
| US4582232A (en) * | 1984-06-19 | 1986-04-15 | Flo-Con Systems, Inc. | Valve, clamp, refractory and method |
| JPS61159262A (en) * | 1985-01-07 | 1986-07-18 | Toshiba Ceramics Co Ltd | Sliding gate plate for controlling flow rate of molten metal |
| DE8530676U1 (en) * | 1985-10-30 | 1987-01-29 | Didier S.A., Lugones-Oviedo | Device for supporting frames of fireproof panels in slide closures |
-
1987
- 1987-03-25 DE DE3709812A patent/DE3709812C1/en not_active Expired
-
1988
- 1988-01-19 KR KR1019880701434A patent/KR960003719B1/en not_active IP Right Cessation
- 1988-01-19 WO PCT/EP1988/000032 patent/WO1988007423A1/en active IP Right Grant
- 1988-01-19 EP EP88900823A patent/EP0306501B1/en not_active Expired - Lifetime
- 1988-01-19 DE DE8888900823T patent/DE3860215D1/en not_active Expired - Fee Related
- 1988-01-19 JP JP63501027A patent/JPH01501606A/en active Pending
- 1988-01-19 AT AT88900823T patent/ATE53521T1/en not_active IP Right Cessation
- 1988-02-15 ZA ZA881035A patent/ZA881035B/en unknown
- 1988-03-24 CA CA000562280A patent/CA1317104C/en not_active Expired - Fee Related
-
1991
- 1991-02-15 JP JP1991006287U patent/JPH0710847Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| ZA881035B (en) | 1988-09-28 |
| EP0306501A1 (en) | 1989-03-15 |
| WO1988007423A1 (en) | 1988-10-06 |
| JPH0490164U (en) | 1992-08-06 |
| JPH01501606A (en) | 1989-06-08 |
| EP0306501B1 (en) | 1990-06-13 |
| DE3709812C1 (en) | 1988-01-21 |
| DE3860215D1 (en) | 1990-07-19 |
| JPH0710847Y2 (en) | 1995-03-15 |
| KR960003719B1 (en) | 1996-03-21 |
| KR890700414A (en) | 1989-04-24 |
| ATE53521T1 (en) | 1990-06-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |