EP0790873A1 - Tundish impact pad - Google Patents
Tundish impact padInfo
- Publication number
- EP0790873A1 EP0790873A1 EP95934731A EP95934731A EP0790873A1 EP 0790873 A1 EP0790873 A1 EP 0790873A1 EP 95934731 A EP95934731 A EP 95934731A EP 95934731 A EP95934731 A EP 95934731A EP 0790873 A1 EP0790873 A1 EP 0790873A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tundish
- impact
- sidewall
- pad
- opening
- 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
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
- B22D41/003—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like with impact pads
Definitions
- This invention relates to a tundish impact pad, i.e. a pad of erosion resistant material positioned on the floor of a tundish to receive the incoming stream of molten metal poured into the tundish from a ladle.
- U.S. patent 5169591 discloses an impact pad for a tundi h for continuous casting of steel that comprises a base, a peripheral top surface and a discontinuous sidewall extending between the base and the peripheral top surface, the sidewall having an undercut inner surface, which may be curvilinear.
- U.S. patent 5358551 discloses an impact pad which comprises a base, a sidewall extending around the base, the sidewall having an inner surface having a portion which extends inwardly and upwardly. That inner surface may be concave.
- both of the aforesaid types of impact pad are designed to reduce turbulence in the tundish
- improved turbulence reduction can be achieved by providing an impact pad with internal corners defined between its base, its peripheral wall and its upper surface.
- the invention provides a tundish impact pad comprising a body of refractory material capable of withstanding contact with molten steel in a tundish; the body comprising a base having an impact surface, an endless outer sidewall extending upwardly from the impact surface, a top surface connected to the sidewall and defining an opening therein, the top surface having an inner annular portion substantially parallel to the impact surface and the sidewall having an interior face which is substantially perpendicular to the impact surface and wherein a substantially right angle corner is provided between the sidewall and the impact surface and a substantially right angle corner is provided between the sidewall and the top surface inner annular portion.
- Molten steel entering through the opening and contacting the impact surface flows outwardly then is turned inwardly by the sidewall interior face and then flows out the opening.
- the sidewall is endless, i.e. it extends continuously around the impact surface.
- the opening is non-uniform in that it has a long dimension and a short dimension perpendicular to the long dimension.
- the opening may be, for example, rectangular or oval.
- the top outer surface of the pad may conveniently also be parallel to the impact surface.
- the impact pads of the present invention uniformly disperse the flow of incoming steel rather than merely redirecting it. Since the steel flow can be dispersed over a larger area than if a circular or other uniform configuration were used, the result is more uniformly surface directed flow while maintaining the benefits of reduced splash and turbulence. Also due to the non-uniform configuration of the impact pad it presents a larger • "target" to the incoming steel than a similar width uniform shaped pad (e.g. circular or square), with the desired results obtained even if the steel stream is imperfectly aligned with the centre of the impact pad.
- a similar width uniform shaped pad e.g. circular or square
- the invention is particularly useful in providing improved residence time distribution parameters in the poured molten steel. It can also be of reduced cost due to its simplified internal chamber shapes and may be of reduced overall size relative to known impact pads.
- the impact pads according to the present invention are formed of a refractory composition which is capable of withstanding continuous contact with molten metal, in particular, molten steel such as used in continuous casting operations.
- molten metal in particular, molten steel
- a standard medium- to-high alumina monolithic refractory with an alumina content in the range of about 55 to 85% by weight is desirable.
- a basic refractory is preferred because of steel chemistry, it is preferred that a magnesia based monolithic refractory be utilised, with MgO in the range of about 58 to 93% by weight.
- the invention provides a tundish for holding a volume of molten steel and having a floor and side walls enclosing a region of impact and a drain, an impact pad of the present invention being provided on the floor of the tundish in the region of impact.
- Figure 1 is a side cross-sectional view of a tundish including an impact pad of the invention disposed on the floor of the tundish;
- Figure 2 is a top plan view of the impact pad of Figure 1, which illustrates where the cross-section of Figure 1 is taken (along line I to I);
- Figure 3 is a cross- section along line III to III of Figure 2.
- Figure 4 is an enlarged sectional view of a portion of the impact pad of Figure 3.
- a conventional tundish 10 is shown and includes an inner lining 12 and a pair of well blocks or outlets 14 to allow molten metal (typically steel) from a bath 16 contained in the tundish 10 to continuously exit the tundish 10 and enter moulds (not shown) which form metal castings.
- a ladle shroud 18 or like tundish filling device is positioned above the tundish 10 and continuously directs a stream of molten metal into the tundish 10.
- a tundish impact pad 20 constructed according to the present invention is placed generally centrally on the floor 15 of the tundish 10.
- the tundish impact pad 20 is preferably rectangular in shape and is positioned with its longer sides parallel to the longitudinal axis of the tundish.
- the pad includes a base - 5 -
- the pad 20 further includes an endless, annular outer sidewall 26, 40 having an inner wall face surface 28.
- the impact pad 20 also has a top surface 32 parallel to the impact surface 24 and connected to the sidewall 26, 40 and defining a non-uniform opening 30 therein.
- non-uniform it is meant that the opening 30 is not circular or square; rather it has a long dimension 30' (see Figure 2) and a short dimension 30" substantially perpendicular to the long dimension 30'.
- the interior face 28 of the sidewall extends upwardly substantially at right angles to the impact surface 24 around the entire periphery thereof.
- the continuous nature of the inner surface 28 is perhaps seen most clearly in Figure 2, being shown in dotted line therein.
- the sidewall 28, with impact surface 24 and underside portion 42 of top surface 32 provides two sharp corners 28A and 28B respectively, which corners also extend continuously around the inside of the impact pad.
- the outer sidewall 26 may be tapered inwardly from the top surface 32 toward the base 22, defining ears 27 at opposite ends.
- the ears 27 facilitate connection of the impact pad 20 to the base or floor 15 of the tundish when certain types of tundishes are utilised.
- the impact pad 20 may merely be mounted in a conventional manner on the bottom of the tundish.
- the bottom portion of the top surface 32 has annular portions 39, 42 (see Figure 3) thereof, which lie parallel to the impact surface 24.
- This annular, overhang surface 42 facilitates proper directing of the molten steel during filling of the tundish 10.
- the long dimension 30' of the opening 30 is positioned aligned with the long dimension of the tundish (the dimension between the outlets 14, as seen in Figure 1), whereas the short dimension 30" of the opening 30 is aligned with the short dimension of the tundish 10.
- outer sidewall portions 40 rather than being tapered inwardly like the sidewall portions 26, preferably taper very slightly (e.g. 2 to 5°) outwardly, as seen in Figure 3.
- straight sides may be provided for both walls 26, 40 and straight sidewalls 26 may or may not contain ears 27.
- the refractory material of which the impact pad 20 is made must be capable of withstanding continuous contact with molten steel during the entire use cycle of the tundish 10. It must have adequate refractoriness normally available from a standard medium-to-high alumina monolithic refractory. For example, an alumina content in the range of about 55 to 85% may be utilised. Where a basic refractory is preferred because of the steel chemistry, typically an MgO-based monolithic refractory, with MgO in the range of about 58 to 93% is preferred.
- the impact pad 20 be rectangular in shape, as illustrated in Figures 1 through 4, other non-uniform configurations can also be provided.
- an oval impact pad may be utilised, or another type of multi-sided polygon configuration, as long as there is an opening with a long dimension which is aligned with the long dimension of the tundish 10 and a short dimension aligned with the short dimension of the tundish 10.
- molten steel flowing in the path 34 from a location disposed above the pad 20 strikes the impact surface 24 and then moves radially outwardly as illustrated by arrows 35.
- small corner fillets may be present in the right- angle corners between the sidewall and the impact surface and /or the top surface inner annular portion.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Cold Cathode And The Manufacture (AREA)
- Silicon Polymers (AREA)
- Fluid-Damping Devices (AREA)
- Laminated Bodies (AREA)
- Vehicle Step Arrangements And Article Storage (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
- Professional, Industrial, Or Sporting Protective Garments (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Details Of Garments (AREA)
- Ceramic Products (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
A tundish impact pad (20) to reduce turbulence in the tundish comprises a body of refractory material capable of withstanding contact with molten steel in a tundish (10), the body comprising a base (22) having an impact surface (24), an outer sidewall (26, 40) extending upwardly from the impact surface (24), a top surface (32) connected to the sidewall (26, 40) and defining an opening (30) therein, in which the top surface (32) has an inner annular portion (42) substantially parallel to the impact surface (24), and the sidewall (26, 40) has an interior face (28) which is substantially perpendicular to the impact surface (24) and wherein a substantially right angle corner (28A) is provided between the sidewall (28) and the impact surface (24) and a substantially right angle corner is provided between the sidewall (28) and the top surface inner annular portion (42).
Description
TUNDISH IMPACT PAD
This invention relates to a tundish impact pad, i.e. a pad of erosion resistant material positioned on the floor of a tundish to receive the incoming stream of molten metal poured into the tundish from a ladle.
U.S. patent 5169591 discloses an impact pad for a tundi h for continuous casting of steel that comprises a base, a peripheral top surface and a discontinuous sidewall extending between the base and the peripheral top surface, the sidewall having an undercut inner surface, which may be curvilinear.
U.S. patent 5358551 discloses an impact pad which comprises a base, a sidewall extending around the base, the sidewall having an inner surface having a portion which extends inwardly and upwardly. That inner surface may be concave.
Whereas both of the aforesaid types of impact pad are designed to reduce turbulence in the tundish, we have surprisingly found that improved turbulence reduction can be achieved by providing an impact pad with internal corners defined between its base, its peripheral wall and its upper surface. Thus, we have now found that it can be advantageous to provide such internal corners and that improvements in the reduction of surface turbulence, minimisation of slag entrainment, prevention of break-up of tundish flux cover, reoxidation of the molten steel and ensuring a proper flow path of the steel within the tundish. may be achieved.
Accordingly, in one aspect, the invention provides a tundish impact pad comprising a body of refractory material capable of withstanding contact with molten steel in a tundish; the body comprising a base having an impact surface, an endless outer sidewall extending upwardly from the impact surface, a top surface connected to the sidewall and defining an opening therein, the top surface having an inner annular portion substantially parallel to the impact surface and the sidewall having an interior face which is substantially perpendicular to the impact surface and wherein a substantially right angle corner is provided between the sidewall and the impact surface and a substantially right angle corner is provided between the sidewall and the top surface inner annular portion.
Molten steel entering through the opening and contacting the impact surface flows outwardly then is turned inwardly by the sidewall interior face and then flows out the opening.
Preferably the sidewall is endless, i.e. it extends continuously around the impact surface.
Preferably, the opening is non-uniform in that it has a long dimension and a short dimension perpendicular to the long dimension. Thus it may be, for example, rectangular or oval.
The top outer surface of the pad may conveniently also be parallel to the impact surface.
The impact pads of the present invention uniformly disperse the flow of incoming steel rather than merely redirecting it.
Since the steel flow can be dispersed over a larger area than if a circular or other uniform configuration were used, the result is more uniformly surface directed flow while maintaining the benefits of reduced splash and turbulence. Also due to the non-uniform configuration of the impact pad it presents a larger •"target" to the incoming steel than a similar width uniform shaped pad (e.g. circular or square), with the desired results obtained even if the steel stream is imperfectly aligned with the centre of the impact pad.
The invention is particularly useful in providing improved residence time distribution parameters in the poured molten steel. It can also be of reduced cost due to its simplified internal chamber shapes and may be of reduced overall size relative to known impact pads.
The impact pads according to the present invention are formed of a refractory composition which is capable of withstanding continuous contact with molten metal, in particular, molten steel such as used in continuous casting operations. Usually a standard medium- to-high alumina monolithic refractory, with an alumina content in the range of about 55 to 85% by weight is desirable. Where a basic refractory is preferred because of steel chemistry, it is preferred that a magnesia based monolithic refractory be utilised, with MgO in the range of about 58 to 93% by weight.
In another aspect the invention provides a tundish for holding a volume of molten steel and having a floor and side walls enclosing a region of impact and a drain, an impact pad of the present invention being provided on the floor of the tundish in the region of impact.
Embodiments of the invention will now be described by way of example only with reference to the accompanying drawings in which:
Figure 1 is a side cross-sectional view of a tundish including an impact pad of the invention disposed on the floor of the tundish;
Figure 2 is a top plan view of the impact pad of Figure 1, which illustrates where the cross-section of Figure 1 is taken (along line I to I);
Figure 3 is a cross- section along line III to III of Figure 2; and
Figure 4 is an enlarged sectional view of a portion of the impact pad of Figure 3.
In Figure 1, a conventional tundish 10 is shown and includes an inner lining 12 and a pair of well blocks or outlets 14 to allow molten metal (typically steel) from a bath 16 contained in the tundish 10 to continuously exit the tundish 10 and enter moulds (not shown) which form metal castings. As is also conventional, a ladle shroud 18 or like tundish filling device, is positioned above the tundish 10 and continuously directs a stream of molten metal into the tundish 10. A tundish impact pad 20 constructed according to the present invention is placed generally centrally on the floor 15 of the tundish 10.
As seen in Figures 1 to 4, the tundish impact pad 20 is preferably rectangular in shape and is positioned with its longer sides parallel to the longitudinal axis of the tundish. The pad includes a base
- 5 -
22 having a planar, horizontal, impact surface 24. The pad 20 further includes an endless, annular outer sidewall 26, 40 having an inner wall face surface 28. The impact pad 20 also has a top surface 32 parallel to the impact surface 24 and connected to the sidewall 26, 40 and defining a non-uniform opening 30 therein. By •"non-uniform" it is meant that the opening 30 is not circular or square; rather it has a long dimension 30' (see Figure 2) and a short dimension 30" substantially perpendicular to the long dimension 30'.
As seen in all of Figures 1 through 4, the interior face 28 of the sidewall extends upwardly substantially at right angles to the impact surface 24 around the entire periphery thereof. The continuous nature of the inner surface 28 is perhaps seen most clearly in Figure 2, being shown in dotted line therein.
As shown in Figures 3 and 4, the sidewall 28, with impact surface 24 and underside portion 42 of top surface 32, provides two sharp corners 28A and 28B respectively, which corners also extend continuously around the inside of the impact pad.
As seen in Figure 1, the outer sidewall 26 may be tapered inwardly from the top surface 32 toward the base 22, defining ears 27 at opposite ends. The ears 27 facilitate connection of the impact pad 20 to the base or floor 15 of the tundish when certain types of tundishes are utilised. Alternatively, the impact pad 20 may merely be mounted in a conventional manner on the bottom of the tundish.
It is also noted that the bottom portion of the top surface 32 has annular portions 39, 42 (see Figure 3) thereof, which lie parallel to the impact surface 24. This annular, overhang surface 42 facilitates
proper directing of the molten steel during filling of the tundish 10. Note that the long dimension 30' of the opening 30 is positioned aligned with the long dimension of the tundish (the dimension between the outlets 14, as seen in Figure 1), whereas the short dimension 30" of the opening 30 is aligned with the short dimension of the tundish 10.
The outer sidewall portions 40, rather than being tapered inwardly like the sidewall portions 26, preferably taper very slightly (e.g. 2 to 5°) outwardly, as seen in Figure 3. Alternatively, straight sides may be provided for both walls 26, 40 and straight sidewalls 26 may or may not contain ears 27.
The refractory material of which the impact pad 20 is made must be capable of withstanding continuous contact with molten steel during the entire use cycle of the tundish 10. It must have adequate refractoriness normally available from a standard medium-to-high alumina monolithic refractory. For example, an alumina content in the range of about 55 to 85% may be utilised. Where a basic refractory is preferred because of the steel chemistry, typically an MgO-based monolithic refractory, with MgO in the range of about 58 to 93% is preferred.
While it is preferred that the impact pad 20 be rectangular in shape, as illustrated in Figures 1 through 4, other non-uniform configurations can also be provided. For example, an oval impact pad may be utilised, or another type of multi-sided polygon configuration, as long as there is an opening with a long dimension which is aligned with the long dimension of the tundish 10 and a short dimension aligned with the short dimension of the tundish 10.
In use of the tundish pad 20 illustrated in Figure 1, molten steel flowing in the path 34 from a location disposed above the pad 20 strikes the impact surface 24 and then moves radially outwardly as illustrated by arrows 35. When the steel impacts the inner face 28 of the sidewall, it is directed inwardly then upwardly, flowing as illustrated at 36 in Figure 1 and ultimately being dispersed generally radially outwardly as indicated by arrows 37, 38 in Figure 1. This minimises turbulence on the surface of the bath 16 and helps direct slag and other impurities away from the stream 34.
It is not essential that the corners shown in dotted line in plan in Figure 2 be radiused as shown and the corners may, if desired, be right-angled.
If desired, small corner fillets may be present in the right- angle corners between the sidewall and the impact surface and /or the top surface inner annular portion.
Claims
1. A tundish impact pad (20) comprising a body of refractory material capable of withstanding contact with molten steel in a tundish (10), the body comprising a base (22) having an impact surface (24), an outer sidewall (26, 40) extending upwardly from the impact surface (24), a top surface (32) connected to the sidewall (26, 40) and defining an opening (30) therein, characterised in that the top surface (32) has an inner annular portion (42) substantially parallel to the impact surface (24), and the sidewall (26, 40) has an interior face (28) which is substantially perpendicular to the impact surface (24) and wherein a substantially right angle corner (28A) is provided between the sidewall (28) and the impact surface (24) and a substantially right angle corner is provided between the sidewall (28) and the top surface inner annular portion (42).
2. A tundish impact pad according to Claim 1, wherein the opening (30) has a long dimension (301 and a short dimension (30") perpendicular to the long dimension.
3. A tundish impact pad according to Claim 2, wherein the opening (30) is rectangular or oval.
4. A tundish impact pad according to Claim 1, 2 or 3, wherein the top outer surface (32) of the pad is parallel to the impact surface (24).
5. A tundish impact pad according to any preceding claim, wherein the sidewall (26, 40) is endless.
6. A tundish impact pad according to any preceding claim, wherein the pad (20) is a monolithic refractory having an alumina content of from 55% to 85% by weight.
7. A tundish impact pad according to any one of Claims 1 to 5, wherein the pad (20) is a monolithic refractory comprising magnesia and containing from 58% to 93% by weight of magnesia.
8. A tundish (10) for holding a volume of molten steel (16) and having a floor (15) and sidewalls (12) enclosing a region of impact and a drain (14), wherein the tundish (10) contains an impact pad (20) as claimed in any preceding claim on the floor (15) in the region of impact.
9. A tundish according to Claim 8, wherein the impact pad (20) has an opening (30) to receive a stream of molten metal, the opening (30) having a long dimension (30^ and a short dimension (30") perpendicular to the long dimension (30 T and the long dimension (301 of the opening (30) is aligned with the long dimension of the tundish.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US338123 | 1994-11-09 | ||
| US08/338,123 US5518153A (en) | 1994-11-09 | 1994-11-09 | Tundish impact pad |
| GBGB9508070.1A GB9508070D0 (en) | 1995-04-20 | 1995-04-20 | Tundish impact pad |
| GB9508070 | 1995-04-20 | ||
| PCT/GB1995/002505 WO1996014951A1 (en) | 1994-11-09 | 1995-10-24 | Tundish impact pad |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0790873A1 true EP0790873A1 (en) | 1997-08-27 |
| EP0790873B1 EP0790873B1 (en) | 1998-06-03 |
Family
ID=26306906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95934731A Expired - Lifetime EP0790873B1 (en) | 1994-11-09 | 1995-10-24 | Tundish impact pad |
Country Status (14)
| Country | Link |
|---|---|
| EP (1) | EP0790873B1 (en) |
| JP (1) | JP4007429B2 (en) |
| CN (1) | CN1069243C (en) |
| AT (1) | ATE166814T1 (en) |
| AU (1) | AU692622B2 (en) |
| BR (1) | BR9509706A (en) |
| CA (1) | CA2162551C (en) |
| DE (1) | DE69502838T2 (en) |
| DK (1) | DK0790873T3 (en) |
| ES (1) | ES2104525T3 (en) |
| FI (1) | FI110312B (en) |
| TR (1) | TR199501393A2 (en) |
| TW (1) | TW321615B (en) |
| WO (1) | WO1996014951A1 (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2756761B1 (en) * | 1996-12-11 | 1999-01-08 | Ugine Savoie Sa | SUPPLY TANK INTENDED TO RETAIN MELTED METAL AND IN PARTICULAR STEEL |
| GB9816458D0 (en) * | 1998-07-29 | 1998-09-23 | Foseco Int | Tundish impact pad |
| GB9903937D0 (en) * | 1999-02-22 | 1999-04-14 | Foseco Int | Tundish impact pad |
| GB9913241D0 (en) * | 1999-06-08 | 1999-08-04 | Foseco Int | Impact pad for tundish |
| ES1048253Y (en) * | 2001-02-14 | 2002-05-01 | Refractaria S A | IMPACT BLOCK FOR CONTINUOUS COLADA. |
| DE10143396C1 (en) * | 2001-09-04 | 2002-11-28 | Rhi Ag Wien | Baffle pot used for casting molten metal comprises a base and a peripheral wall which delimits a chamber and a feed opening for a molten metal lying opposite the base |
| ZA200206261B (en) * | 2002-03-28 | 2003-04-07 | Foseco Int | Metallurgical impact pad. |
| DE10235867B3 (en) * | 2002-08-05 | 2004-04-08 | Refractory Intellectual Property Gmbh & Co.Kg | Refractory ceramic component |
| DE10257395A1 (en) * | 2002-12-06 | 2004-06-24 | Weerulin Feuerfeste Produkte Gmbh & Co. Kg | Tundish fabricated of incombustible material has perforated steel cover protecting surrounding holding vessel from the impact of incoming molten metal |
| DE102007035452B4 (en) | 2007-07-26 | 2013-02-21 | Pa-Ha-Ge Feuerfeste Erzeugnisse Gmbh & Co. Kg | impact absorber |
| EP2193861A1 (en) | 2008-12-02 | 2010-06-09 | Foseco International Limited | Tundish Impact pad. |
| EP2537609A1 (en) * | 2011-06-23 | 2012-12-26 | Calderys Ukraine Ltd. | Metal-flow impact pad and diffuser for tundish |
| JP5751078B2 (en) * | 2011-08-04 | 2015-07-22 | Ｊｆｅスチール株式会社 | Manufacturing method of high cleanliness steel slab by continuous casting |
| CN103273027B (en) * | 2013-05-20 | 2015-08-12 | 江苏永钢集团有限公司 | A kind of Tundish rotational flow type turbulence controller |
| EP2865464B1 (en) * | 2013-10-22 | 2016-03-16 | Refractory Intellectual Property GmbH & Co. KG | Fireproof ceramic impact pad |
| CN110814330A (en) * | 2019-12-25 | 2020-02-21 | 武汉科技大学 | Top rotating type turbulence controller for continuous casting tundish |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4776570A (en) * | 1987-07-08 | 1988-10-11 | Sidbec Dosco Inc. | Ladle stream breaker |
| US5169591A (en) * | 1992-02-07 | 1992-12-08 | Bethlehem Steel Corporation | Impact pad for a continuous caster tundish |
| CN2204668Y (en) * | 1993-08-21 | 1995-08-09 | 鞍山钢铁学院 | Impact-proof cushion for ingot underpan |
| US5358551A (en) * | 1993-11-16 | 1994-10-25 | Ccpi, Inc. | Turbulence inhibiting tundish and impact pad and method of using |
-
1995
- 1995-10-24 EP EP95934731A patent/EP0790873B1/en not_active Expired - Lifetime
- 1995-10-24 AT AT95934731T patent/ATE166814T1/en active
- 1995-10-24 JP JP51581096A patent/JP4007429B2/en not_active Expired - Lifetime
- 1995-10-24 DK DK95934731T patent/DK0790873T3/en active
- 1995-10-24 WO PCT/GB1995/002505 patent/WO1996014951A1/en active IP Right Grant
- 1995-10-24 BR BR9509706A patent/BR9509706A/en active IP Right Grant
- 1995-10-24 AU AU37043/95A patent/AU692622B2/en not_active Expired
- 1995-10-24 DE DE69502838T patent/DE69502838T2/en not_active Expired - Lifetime
- 1995-10-24 CN CN95197120A patent/CN1069243C/en not_active Expired - Lifetime
- 1995-10-24 ES ES95934731T patent/ES2104525T3/en not_active Expired - Lifetime
- 1995-11-08 TR TR95/01393A patent/TR199501393A2/en unknown
- 1995-11-09 CA CA002162551A patent/CA2162551C/en not_active Expired - Lifetime
- 1995-11-28 TW TW084112638A patent/TW321615B/zh not_active IP Right Cessation
-
1997
- 1997-05-07 FI FI971968A patent/FI110312B/en not_active IP Right Cessation
Non-Patent Citations (1)
| Title |
|---|
| See references of WO9614951A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1069243C (en) | 2001-08-08 |
| CN1171752A (en) | 1998-01-28 |
| TR199501393A2 (en) | 1996-07-21 |
| CA2162551A1 (en) | 1996-05-10 |
| ES2104525T1 (en) | 1997-10-16 |
| AU692622B2 (en) | 1998-06-11 |
| AU3704395A (en) | 1996-06-06 |
| FI110312B (en) | 2002-12-31 |
| ES2104525T3 (en) | 1998-09-16 |
| EP0790873B1 (en) | 1998-06-03 |
| DK0790873T3 (en) | 1999-02-15 |
| JP2000505728A (en) | 2000-05-16 |
| DE69502838T2 (en) | 1999-03-18 |
| MX9703352A (en) | 1997-09-30 |
| CA2162551C (en) | 2000-08-01 |
| DE69502838D1 (en) | 1998-07-09 |
| WO1996014951A1 (en) | 1996-05-23 |
| TW321615B (en) | 1997-12-01 |
| FI971968A0 (en) | 1997-05-07 |
| FI971968A (en) | 1997-05-07 |
| ATE166814T1 (en) | 1998-06-15 |
| JP4007429B2 (en) | 2007-11-14 |
| BR9509706A (en) | 1997-10-28 |
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