EP0790873B1 - Tundish impact pad - Google Patents

Tundish impact pad Download PDF

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Publication number
EP0790873B1
EP0790873B1 EP95934731A EP95934731A EP0790873B1 EP 0790873 B1 EP0790873 B1 EP 0790873B1 EP 95934731 A EP95934731 A EP 95934731A EP 95934731 A EP95934731 A EP 95934731A EP 0790873 B1 EP0790873 B1 EP 0790873B1
Authority
EP
European Patent Office
Prior art keywords
impact
tundish
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.)
Expired - Lifetime
Application number
EP95934731A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0790873A1 (en
Inventor
Donald Richard Zacharias
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Foseco International Ltd
Original Assignee
Foseco International Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26306906&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0790873(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from US08/338,123 external-priority patent/US5518153A/en
Priority claimed from GBGB9508070.1A external-priority patent/GB9508070D0/en
Application filed by Foseco International Ltd filed Critical Foseco International Ltd
Publication of EP0790873A1 publication Critical patent/EP0790873A1/en
Application granted granted Critical
Publication of EP0790873B1 publication Critical patent/EP0790873B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 tundish 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 4776570 discloses a ladle stream breaker in the form of a closed box into which the ladle stream is directed via a pouring tube.
  • the box has apertured walls through which the stream flows out of the box as a series of sub-streams each flowing perpendicularly to and impinging against a wall of a tundish.
  • 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 outer sidewall extending upwardly from the impact surface, a top surface connected to the sidewall, an opening being defined in the top surface, which opening provides open access for molten steel to and from the impact surface; the top surface having an inner annular portion substantially parallel to the impact surface, and the sidewall having a continuous 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 of 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.
  • 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.
  • 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 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.

Landscapes

  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Cold Cathode And The Manufacture (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Vehicle Step Arrangements And Article Storage (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Laminated Bodies (AREA)
  • Silicon Polymers (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Fluid-Damping Devices (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Details Of Garments (AREA)
  • Ceramic Products (AREA)
EP95934731A 1994-11-09 1995-10-24 Tundish impact pad Expired - Lifetime EP0790873B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US08/338,123 US5518153A (en) 1994-11-09 1994-11-09 Tundish impact pad
US338123 1994-11-09
GB9508070 1995-04-20
GBGB9508070.1A GB9508070D0 (en) 1995-04-20 1995-04-20 Tundish impact pad
PCT/GB1995/002505 WO1996014951A1 (en) 1994-11-09 1995-10-24 Tundish impact pad

Publications (2)

Publication Number Publication Date
EP0790873A1 EP0790873A1 (en) 1997-08-27
EP0790873B1 true 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 (enrdf_load_stackoverflow)
JP (1) JP4007429B2 (enrdf_load_stackoverflow)
CN (1) CN1069243C (enrdf_load_stackoverflow)
AT (1) ATE166814T1 (enrdf_load_stackoverflow)
AU (1) AU692622B2 (enrdf_load_stackoverflow)
BR (1) BR9509706A (enrdf_load_stackoverflow)
CA (1) CA2162551C (enrdf_load_stackoverflow)
DE (1) DE69502838T2 (enrdf_load_stackoverflow)
DK (1) DK0790873T3 (enrdf_load_stackoverflow)
ES (1) ES2104525T3 (enrdf_load_stackoverflow)
FI (1) FI110312B (enrdf_load_stackoverflow)
TR (1) TR199501393A2 (enrdf_load_stackoverflow)
TW (1) TW321615B (enrdf_load_stackoverflow)
WO (1) WO1996014951A1 (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10143396C1 (de) * 2001-09-04 2002-11-28 Rhi Ag Wien Pralltopf
WO2004014585A1 (de) * 2002-08-05 2004-02-19 Refractory Intellectual Property Gmbh & Co. Kg Feuerfestes keramisches bauteil
DE10257395A1 (de) * 2002-12-06 2004-06-24 Weerulin Feuerfeste Produkte Gmbh & Co. Kg Einlegekörper für Zwischenbehälter
DE102007035452A1 (de) 2007-07-26 2009-01-29 Pa-Ha-Ge Feuerfeste Erzeugnisse Gmbh & Co. Kg Pralltopf
EP2193861A1 (en) 2008-12-02 2010-06-09 Foseco International Limited Tundish Impact pad.

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2756761B1 (fr) * 1996-12-11 1999-01-08 Ugine Savoie Sa Reservoir d'alimentation destine a retenir un metal fondu et notamment un acier
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 (es) * 2001-02-14 2002-05-01 Refractaria S A Bloque de impacto para colada continua.
ZA200206261B (en) * 2002-03-28 2003-04-07 Foseco Int Metallurgical impact pad.
EP2537609A1 (en) * 2011-06-23 2012-12-26 Calderys Ukraine Ltd. Metal-flow impact pad and diffuser for tundish
JP5751078B2 (ja) * 2011-08-04 2015-07-22 Ｊｆｅスチール株式会社 連続鋳造による高清浄度鋼鋳片の製造方法
CN103273027B (zh) * 2013-05-20 2015-08-12 江苏永钢集团有限公司 一种中间包旋流型湍流控制器
SI2865464T1 (sl) * 2013-10-22 2016-06-30 Refractory Intellectual Property Gmbh & Co. Kg Ognjevzdržni keramični udarni lonec
CN110814330A (zh) * 2019-12-25 2020-02-21 武汉科技大学 一种连铸中间包顶旋型湍流控制器

Family Cites Families (4)

* Cited by examiner, † Cited by third party
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 (zh) * 1993-08-21 1995-08-09 鞍山钢铁学院 铸锭底盘防冲垫
US5358551A (en) * 1993-11-16 1994-10-25 Ccpi, Inc. Turbulence inhibiting tundish and impact pad and method of using

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10143396C1 (de) * 2001-09-04 2002-11-28 Rhi Ag Wien Pralltopf
WO2004014585A1 (de) * 2002-08-05 2004-02-19 Refractory Intellectual Property Gmbh & Co. Kg Feuerfestes keramisches bauteil
DE10235867B3 (de) * 2002-08-05 2004-04-08 Refractory Intellectual Property Gmbh & Co.Kg Feuerfestes keramisches Bauteil
US7128247B2 (en) 2002-08-05 2006-10-31 Refractory Intellectual Property Gmbh & Co. Kg Fire resistant ceramic part
DE10257395A1 (de) * 2002-12-06 2004-06-24 Weerulin Feuerfeste Produkte Gmbh & Co. Kg Einlegekörper für Zwischenbehälter
DE102007035452A1 (de) 2007-07-26 2009-01-29 Pa-Ha-Ge Feuerfeste Erzeugnisse Gmbh & Co. Kg Pralltopf
DE102007035452B4 (de) * 2007-07-26 2013-02-21 Pa-Ha-Ge Feuerfeste Erzeugnisse Gmbh & Co. Kg Pralltopf
EP2193861A1 (en) 2008-12-02 2010-06-09 Foseco International Limited Tundish Impact pad.
US8746516B2 (en) 2008-12-02 2014-06-10 Vesuvius Crucible Company Tundish impact pad

Also Published As

Publication number Publication date
TR199501393A2 (tr) 1996-07-21
DE69502838T2 (de) 1999-03-18
FI110312B (fi) 2002-12-31
CN1171752A (zh) 1998-01-28
JP2000505728A (ja) 2000-05-16
DE69502838D1 (de) 1998-07-09
FI971968A0 (fi) 1997-05-07
ATE166814T1 (de) 1998-06-15
AU3704395A (en) 1996-06-06
TW321615B (enrdf_load_stackoverflow) 1997-12-01
BR9509706A (pt) 1997-10-28
ES2104525T1 (es) 1997-10-16
CA2162551A1 (en) 1996-05-10
JP4007429B2 (ja) 2007-11-14
AU692622B2 (en) 1998-06-11
EP0790873A1 (en) 1997-08-27
FI971968L (fi) 1997-05-07
MX9703352A (es) 1997-09-30
WO1996014951A1 (en) 1996-05-23
DK0790873T3 (da) 1999-02-15
ES2104525T3 (es) 1998-09-16
CA2162551C (en) 2000-08-01
CN1069243C (zh) 2001-08-08

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