EP0551581B1 - Stopfen für metallurgische Gefässe - Google Patents

Stopfen für metallurgische Gefässe Download PDF

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Publication number
EP0551581B1
EP0551581B1 EP92119190A EP92119190A EP0551581B1 EP 0551581 B1 EP0551581 B1 EP 0551581B1 EP 92119190 A EP92119190 A EP 92119190A EP 92119190 A EP92119190 A EP 92119190A EP 0551581 B1 EP0551581 B1 EP 0551581B1
Authority
EP
European Patent Office
Prior art keywords
stopper
plug
thermocouple
axial channel
channel
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
EP92119190A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0551581A1 (de
Inventor
Hermann Lax
Andreas Au
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.)
Thyssen Stahl AG
Original Assignee
Thyssen Stahl AG
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
Application filed by Thyssen Stahl AG filed Critical Thyssen Stahl AG
Publication of EP0551581A1 publication Critical patent/EP0551581A1/de
Application granted granted Critical
Publication of EP0551581B1 publication Critical patent/EP0551581B1/de
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
    • B22D2/00—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass
    • B22D2/006—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass for the temperature of the molten metal
    • 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
    • B22D41/16—Closures stopper-rod type, i.e. a stopper-rod being positioned downwardly through the vessel and the metal therein, for selective registry with the pouring opening
    • B22D41/18—Stopper-rods therefor
    • B22D41/186—Stopper-rods therefor with means for injecting a fluid into the melt

Definitions

  • the invention relates to a stopper made of refractory material in the form of a rod for a metallurgical casting vessel, in particular with an axial channel for gas, additives or the like leading to an outlet in the stopper cap, as is known from US Pat. No. 3,200,457 .
  • a temperature measuring device in the form of a thermocouple arranged in a protective tube made of refractory material is arranged between the outlet of the casting vessel and a pouring jet protective tube that supplies the melt.
  • This protective tube is mounted on a cover of the casting vessel.
  • thermocouple with the measuring lines in a central axial channel, which is closed at the bottom, of a plug designed as a rod.
  • the disadvantage of this type of arrangement is that it is not possible to supply gas and / or additives to the melt via the stopper and that the thermocouple only indicates the temperature of the melt with a certain time delay and inaccurately because of the thick wall of the stopper rod .
  • the invention has for its object to provide a device for temperature measurement in a metallurgical casting vessel, which is robust with little manufacturing effort and the temperature of the melt leaving the casting vessel as accurately as possible indicates.
  • thermocouple with its measuring lines benefits from the necessary structural robustness of the plug. That's why The wall thickness where the thermocouple with the measuring lines is housed can be very small, which benefits the requirement for the smallest possible delay in temperature measurement and measuring accuracy. For the accuracy of measurement it is also advantageous that the temperature is measured immediately before the outlet of the casting vessel. This is particularly advantageous if the casting vessel has several outlets, as is the case with a multi-strand casting system. In this case, the temperature can be measured individually for each outlet. Finally, the otherwise necessary mounting and installation means for the thermocouple and its supply lines are omitted in the invention. Since the axial channel for the thermocouple is arranged eccentrically in the stopper, there is also enough space for accommodating the further axial channel for gas, additives or the like leading to an outlet in the stopper cap, so that the stopper can fulfill a double function.
  • the stopper above the stopper cap has an integrally formed rib which extends in the axial direction and in which the channel for the thermocouple is located.
  • This rib is advantageous because, in this case, a wall thickness which is small, in particular uniformly thick, for heat conduction can be achieved over approximately half the circumference.
  • the wall thickness of the rib should not exceed 15 mm.
  • Molten metal is introduced into a casting vessel 1 via a pouring jet protection tube 2 and flows out of the vessel 1 via an outlet 3.
  • the casting vessel 1 is covered by a lid 4.
  • the outlet 3 can be closed with the stopper cap 5a formed at the lower end of the stopper 5.
  • an axial central channel 5b extends through which gas, additives or the like can be conveyed directly into the outlet 3 and added to the melt.
  • the plug 5 has the basic shape of a circle in cross section.
  • a rib 5c is formed on the stopper 5, in which a further axial channel 5d extends.
  • a thermocouple 6 with its measuring lines is accommodated in this axial channel 5d.
  • the wall thickness of this channel 5d is comparatively thin and is at most 15 mm.
  • thermocouple 6 Since the thermocouple 6 is located immediately above the stopper cap 5a and the wall thickness in the area of the thermocouple 6 is small on all sides and the thermocouple 6 with as little play as possible in the channel 5d is to sit, it is ensured that the temperature of the casting vessel 1 leaving the outlet 3 is determined very quickly and very accurately.
  • the manufacturing effort for the stopper with integrated temperature measurement is low.
  • the molding of the bulge 5c does not require any additional effort in the usual pressing of the refractory material into the plug 5.
  • the channel 5d is either drilled or molded during the pressing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
EP92119190A 1991-12-23 1992-11-10 Stopfen für metallurgische Gefässe Expired - Lifetime EP0551581B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4142773A DE4142773A1 (de) 1991-12-23 1991-12-23 Stopfen fuer metallurgische gefaesse
DE4142773 1991-12-23

Publications (2)

Publication Number Publication Date
EP0551581A1 EP0551581A1 (de) 1993-07-21
EP0551581B1 true EP0551581B1 (de) 1997-01-02

Family

ID=6448019

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92119190A Expired - Lifetime EP0551581B1 (de) 1991-12-23 1992-11-10 Stopfen für metallurgische Gefässe

Country Status (11)

Country Link
US (1) US5361825A (sk)
EP (1) EP0551581B1 (sk)
AT (1) ATE146998T1 (sk)
AU (1) AU660889B2 (sk)
CA (1) CA2085334C (sk)
CZ (1) CZ283474B6 (sk)
DE (2) DE4142773A1 (sk)
ES (1) ES2096702T3 (sk)
NZ (1) NZ245267A (sk)
PL (1) PL168203B1 (sk)
SK (1) SK280801B6 (sk)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5544695A (en) * 1993-06-01 1996-08-13 Harasym; Michael Antivortexing nozzle system for pouring molten metal
NL1001976C2 (nl) * 1995-12-22 1997-06-24 Hoogovens Groep Bv Werkwijze en inrichting voor het continu gieten van staal.
US5645121A (en) * 1996-01-05 1997-07-08 National Steel Corporation Method of continuous casting using sealed tundish and improved tundish seal
US5827474A (en) * 1997-01-02 1998-10-27 Vesuvius Crucible Company Apparatus and method for measuring the depth of molten steel and slag
CN102308191B (zh) * 2009-02-18 2014-06-18 贺利氏电子耐特国际股份公司 温度测量装置
PL2233227T3 (pl) * 2009-03-23 2011-05-31 Refractory Intellectual Property Gmbh & Co Kg Ogniotrwała zatyczka ceramiczna
DE102014012698B8 (de) 2014-09-01 2016-07-14 Minkon GmbH Messvorrichtung zur optischen Temperaturbestimmung eines geschmolzenen Metalls
US11033957B2 (en) * 2016-03-21 2021-06-15 Refractory Intellectual Property Gmbh & Co. Kg Ceramic refractory stopper
TW201829094A (zh) 2016-12-12 2018-08-16 比利時商維蘇威集團股份有限公司 裝備有整合式溫度測量裝置的塞棒

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE583497C (de) * 1932-04-06 1933-09-05 Otto & Co Gmbh Dr C Stopfenstange fuer Giesspfannen
US3200457A (en) * 1964-03-09 1965-08-17 United States Steel Corp Method of regulating the discharge of molten metal from ladles
US3413852A (en) * 1965-02-12 1968-12-03 Barnes Eng Co Radiometer and oxygen lance combination
FR1459610A (fr) * 1965-04-12 1966-11-18 Electro Nite Engineering Co Détecteur de température combiné à un dispositif pour prélever un échantillon
US3373910A (en) * 1965-10-20 1968-03-19 Crawford B. Murton Stopper rod with temperature responsive cooling means
DE2912311A1 (de) * 1979-03-28 1980-10-09 Annawerk Gmbh Einrichtung an einem giessgefaess zur messung der temperatur der schmelze
SU1022035A1 (ru) * 1981-11-27 1983-06-07 Донецкий научно-исследовательский институт черной металлургии Датчик измерени активности кислорода к стали
US4433832A (en) * 1982-12-27 1984-02-28 Inland Enterprises, Inc. Metallurgical lance
FR2546625B1 (fr) * 1983-05-25 1986-02-21 Daussan & Co Dispositif pour prelever des echantillons de metal liquide et/ou mesurer la temperature et/ou la teneur en oxygene et autres elements du metal liquide et son procede de fabrication
DE3545763A1 (de) * 1985-12-21 1987-06-25 Didier Werke Ag Gasspuelstopfen fuer ein schmelzengefaess

Also Published As

Publication number Publication date
CA2085334A1 (en) 1993-06-24
AU660889B2 (en) 1995-07-06
CZ283474B6 (cs) 1998-04-15
ATE146998T1 (de) 1997-01-15
CA2085334C (en) 2003-03-18
PL168203B1 (pl) 1996-01-31
DE59207810D1 (de) 1997-02-13
DE4142773A1 (de) 1993-06-24
PL296913A1 (en) 1993-07-26
EP0551581A1 (de) 1993-07-21
NZ245267A (en) 1995-08-28
SK280801B6 (sk) 2000-07-11
AU2968492A (en) 1993-06-24
US5361825A (en) 1994-11-08
CZ377292A3 (en) 1993-06-16
ES2096702T3 (es) 1997-03-16
SK377292A3 (en) 1996-05-08

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