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EP0916740A1 - Recipient pour la métallurgie sous vide - Google Patents

Recipient pour la métallurgie sous vide Download PDF

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Publication number
EP0916740A1
EP0916740A1 EP98113451A EP98113451A EP0916740A1 EP 0916740 A1 EP0916740 A1 EP 0916740A1 EP 98113451 A EP98113451 A EP 98113451A EP 98113451 A EP98113451 A EP 98113451A EP 0916740 A1 EP0916740 A1 EP 0916740A1
Authority
EP
European Patent Office
Prior art keywords
contact surface
treatment
metallurgical vessel
edge
vessel according
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.)
Withdrawn
Application number
EP98113451A
Other languages
German (de)
English (en)
Inventor
Markus Schwan
Matthias Normann
Hartmut Schulte
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.)
INTOCAST AG Feuerfest-Produkte und Giesshilfsmittel
Original Assignee
INTOCAST AG Feuerfest-Produkte und Giesshilfsmittel
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 INTOCAST AG Feuerfest-Produkte und Giesshilfsmittel filed Critical INTOCAST AG Feuerfest-Produkte und Giesshilfsmittel
Publication of EP0916740A1 publication Critical patent/EP0916740A1/fr
Withdrawn legal-status Critical Current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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/0075—Treating in a ladle furnace, e.g. up-/reheating of molten steel within the ladle
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/10—Handling in a vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/18—Door frames; Doors, lids or removable covers
    • F27D1/1808—Removable covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D2099/0085—Accessories
    • F27D2099/0093—Means to collect ashes or dust, e.g. vessels

Definitions

  • the invention relates to a metallurgical vessel for use in vacuum tank systems for secondary metallurgical Treatment of molten metal.
  • vacuum treatment becomes the metallurgical containing the molten metal Vessel placed in a vacuum tank system.
  • vacuum tank system When lowering of the external pressure escapes a substantial part of that in the Metal dissolved gases, which is already a regular Improvement of the quality of the solidified end product leads.
  • other metallurgical Reactions are carried out in a vacuum, such as for example fine decarburization, alloying, deoxidation and improving the level of purity.
  • the one used for vacuum treatment of the molten metal metallurgical vessel usually includes a treatment lid, which is the clear opening of the molten metal containing container, so as to reduce leakage of slag and steel from the container into the vacuum chamber, as it happens through chemical reactions of the melt additive alloys or by flushing in noble gases can be prevented. Farther protects the treatment lid from excessive heat loss, since it is an essential part of the melt reflected radiation energy emitted during treatment.
  • a first known construction of the treatment lid is based on a fire-resistant lining of a steel structure, by any shape with unshaped Refractory products are lined mechanically anchored or refractory products molded or unshaped in a support frame are used, which are against the support frame support.
  • the known treatment lids have the container on them facing side on a flat contact surface, which rests on a flat pan end flange, that surrounds the opening of the container.
  • a disadvantage of the one treatment lid is the known one Kind of metallurgical vessels that the There is a risk that the cover is not centered on the Container edge, but placed under a lateral offset becomes. Furthermore, between the treatment lid and the Containers often do not have an adequate seal without additional aids can be achieved. That too is the opening surrounding the edge of the container or the end flange - Especially if the lid is under the side Offset is set - not sufficient Damage due to contact with the melt during the metallurgical treatment protected, at worst a rise or even leakage of the melt is connected to the metallurgical vessel. Furthermore from Disadvantage that the full use of the available Freeboard without damaging the edge of the pan these metallurgical vessels is not possible.
  • the invention has for its object a metallurgical To create vessel, which with respect to the aforementioned Disadvantages is improved.
  • edge surrounding the opening of the container a contact surface inclined to the edge plane for the treatment cover and the treatment cover one in place
  • Condition of the counter surface interacting with the contact surface includes, finds an automatic centering of the treatment lid when placing on the container instead.
  • the Treatment lid is not - as before - only on a flat end flange of the container and is thus laterally displaceable in the plane of the end flange, but through the interlocking Inclined surfaces exist between the container and the treatment lid a kind of positive connection, which a lateral offset between the treatment lid and Container prevented.
  • the contact surface rises to the middle of the container to train, as this effectively prevents is that during operation the contact surface in contact comes with the molten metal.
  • This configuration causes therefore protection of the sealing surface between the cover and Pan, causing an uncontrolled escape of the melt as well as sticking or fusing the treatment lid and pan after finishing the metallurgical Treatment is effectively prevented.
  • the contact surface is preferably one end flange made of a metallic material educated.
  • This measure can already existing, conventional containers that are level Have end flange, by welding one after tapered ring at the top and lining of this expanded freeboards with refractory concrete to one for the Use in a metallurgical according to the invention Suitable containers can be converted.
  • this includes a counter surface forming circumferential support ring.
  • the cover wall preferably consists of at least a self-supporting component made of a refractory material, which is loosely inserted in the support ring.
  • a self-centering and in the case of several cover wall parts one that has this self-stabilizing effect the support ring if it is related to the support ring level outwardly rising contact surface for the cover wall or the cover wall parts comprises.
  • Such a support ring is preferably of such a design designed that he has a cross section of one with his Isosceles height pointing towards the center of the lid Has triangle.
  • the metallurgical one designated 100 as a whole in the drawing Vessel comprises a steel container 1 of circular Cross section with an approximately cylindrical side wall 2 and a flat bottom 3. Extend from the bottom down feet 4, on which the metallurgical vessel 100 is supported on a stand. On its outer wall the container has two offset by about 180 ° arranged pin 6, on which arms 7 pivotable are stored, which are the transport of the metallurgical Vessel 100 with the help of not shown in the drawing Means, such as an indoor crane, serve.
  • the inside is of the steel container 1 lined with a refractory delivery 8.
  • the steel container 1 has at the top of it cylindrical side wall a flat end flange 9 on which a conically converging upwards Ring 10 is attached.
  • the inward side of the ring is with a refractory material 11, for example Refractory concrete, lined. From Fig. 2 is immediate can be seen that by this configuration of the Steel container 1 the freeboard of the metallurgical vessel is expanded.
  • the ring 10 forms an edge 12 which defines the opening 13 of the steel container 1 limited. Its outer conical surface 14 forms a contact surface for a correspondingly inclined Counter bearing surface 15, as a whole with 16 designated treatment cover, which is now in detail should be described.
  • the treatment cover comprises a support ring 17, the Outer diameter D approximately the outer diameter of the steel container 1 corresponds. It has the shape in cross section an isosceles triangle, the height of which is Central longitudinal axis L of the metallurgical vessel directed and runs approximately perpendicular to it.
  • the vertex angle g is dimensioned such that the lower wall 18 of the support ring 17 parallel to the outer conical surface 14 of the ring 10 runs.
  • the support ring has lateral tabs 19 offset by approximately 180 °, on which one is provided for lifting the treatment cover 16 Bracket 20 is pivotally attached and at the same time the arms 7 and pin 6 protects.
  • the treatment cover 16 has a cover wall 21, which in the embodiment shown in the drawing a central opening 22 for gas escape and an inclined lateral opening 23, for example not to bring in the drawing shown sensors on.
  • the cover wall 21 is made from a one-piece refractory wear part, which in terms of its geometric dimensions the surrounding of the metallurgical vessel in operation, in the drawing only indicated vacuum tank system 24, adapted to the support ring 17 and the actual wear is.
  • the cover wall 21 has a support surface 25, which is inclined so that it is flat bears against the upper wall 16 of the support ring 17.
  • the cover wall 21 is a refractory wear part only inserted into the support ring 17, so that by the different coefficients of thermal expansion from the support ring 17 and the cover wall 21 in the event of temperature fluctuations no mechanical stresses are generated but the support surface 25 of the cover wall 21 and the upper wall 26 of the support ring 17 to each other can slide off.
  • Underside 27 of cover wall 21 is made only of refractory material.
  • the refractory wear part forming the cover wall 21 can by casting, vibrating, pounding or pressing and subsequent annealing or firing.
  • the embodiment shown in the drawing has a one-piece cover wall 21.
  • the cover wall 21 from several, suitable for interlocking molded parts made of refractory material put together. It should also be mentioned that the the embodiment shown in the drawing Lid wall has no reinforcements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
EP98113451A 1997-11-11 1998-07-18 Recipient pour la métallurgie sous vide Withdrawn EP0916740A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19749829 1997-11-11
DE1997149829 DE19749829A1 (de) 1997-11-11 1997-11-11 Metallurgisches Gefäß

Publications (1)

Publication Number Publication Date
EP0916740A1 true EP0916740A1 (fr) 1999-05-19

Family

ID=7848309

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98113451A Withdrawn EP0916740A1 (fr) 1997-11-11 1998-07-18 Recipient pour la métallurgie sous vide

Country Status (2)

Country Link
EP (1) EP0916740A1 (fr)
DE (1) DE19749829A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102368021A (zh) * 2011-10-19 2012-03-07 芜湖金龙模具锻造有限责任公司 一种热处理炉的密封门

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004019746A1 (de) * 2004-04-20 2005-12-01 Karl Konzelmann Metallschmelzwerke Gmbh & Co.Kg Behälter zum Verhindern bzw. Minimieren des Abbrands von Aluminium- und/oder Aluminiumlegierungskrätzen
CN102049503A (zh) * 2010-12-31 2011-05-11 无锡巨力重工机械有限公司 改进型的高炉铁水罐
DE102017112615A1 (de) * 2017-06-08 2018-12-13 Sms Group Gmbh Schutzvorrichtung für Vakuum-Konverter
CN113048782B (zh) * 2021-03-12 2022-05-27 上海瑟赫新材料科技有限公司 一种使用寿命长的高温真空炉

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB970546A (en) * 1960-01-23 1964-09-23 Bochumer Ver Fuer Gusstahlfabr Improvements in or relating to vacuum chamber covers
DE1433413A1 (de) * 1962-04-18 1968-11-07 Friedrich Krupp Ag Abstich-Entgasungspfannen-Dichtung
DE1948440A1 (de) * 1969-09-25 1971-04-15 Hoesch Ag Schleuse zum Einbringen von Schuettguetern in gasdicht abgeschlossene Raeume,insbesondere von Legierungselementen in Stahlentgasungsgefaesse
DE3609783A1 (de) * 1986-03-22 1987-09-24 Doerrenberg Edelstahl Gmbh Reaktor-giesspfanne

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3528948B2 (ja) * 1995-07-28 2004-05-24 Ｊｆｅスチール株式会社 真空精錬用取鍋の蓋

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB970546A (en) * 1960-01-23 1964-09-23 Bochumer Ver Fuer Gusstahlfabr Improvements in or relating to vacuum chamber covers
DE1433413A1 (de) * 1962-04-18 1968-11-07 Friedrich Krupp Ag Abstich-Entgasungspfannen-Dichtung
DE1948440A1 (de) * 1969-09-25 1971-04-15 Hoesch Ag Schleuse zum Einbringen von Schuettguetern in gasdicht abgeschlossene Raeume,insbesondere von Legierungselementen in Stahlentgasungsgefaesse
DE3609783A1 (de) * 1986-03-22 1987-09-24 Doerrenberg Edelstahl Gmbh Reaktor-giesspfanne

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102368021A (zh) * 2011-10-19 2012-03-07 芜湖金龙模具锻造有限责任公司 一种热处理炉的密封门

Also Published As

Publication number Publication date
DE19749829A1 (de) 1999-05-12

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