EP0211209B1 - Verfahren zur Montage eines für metallurgische Gefässe vorgesehenen Gasspülsteins - Google Patents

Verfahren zur Montage eines für metallurgische Gefässe vorgesehenen Gasspülsteins Download PDF

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Publication number
EP0211209B1
EP0211209B1 EP86108565A EP86108565A EP0211209B1 EP 0211209 B1 EP0211209 B1 EP 0211209B1 EP 86108565 A EP86108565 A EP 86108565A EP 86108565 A EP86108565 A EP 86108565A EP 0211209 B1 EP0211209 B1 EP 0211209B1
Authority
EP
European Patent Office
Prior art keywords
sheet
shaped block
metal sleeve
onto
metal
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
Application number
EP86108565A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0211209A1 (de
Inventor
Günter Bender
Werner Burbach
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.)
Burbach & Bender oHG Esb Schweissbetrieb
Original Assignee
Burbach & Bender oHG Esb Schweissbetrieb
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=6277540&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0211209(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Burbach & Bender oHG Esb Schweissbetrieb filed Critical Burbach & Bender oHG Esb Schweissbetrieb
Priority to AT86108565T priority Critical patent/ATE43361T1/de
Publication of EP0211209A1 publication Critical patent/EP0211209A1/de
Application granted granted Critical
Publication of EP0211209B1 publication Critical patent/EP0211209B1/de
Expired legal-status Critical Current

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Classifications

    • 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
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/48—Bottoms or tuyéres of converters
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/05—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
    • B22D1/002—Treatment with gases
    • B22D1/005—Injection assemblies therefor
    • 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
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/072—Treatment with gases
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49348—Burner, torch or metallurgical lance making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49357—Regenerator or recuperator making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49428—Gas and water specific plumbing component making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49863—Assembling or joining with prestressing of part
    • Y10T29/49865—Assembling or joining with prestressing of part by temperature differential [e.g., shrink fit]

Definitions

  • the invention relates to a method for assembling a sheet-metal-coated gas purging plug, in which a conical sheet metal sleeve is placed on a frustoconical shaped block made of refractory material, then a metal cover provided with a gas supply pipe is placed on the larger end face of the molded block and then the sheet metal sleeve is welded to the sheet metal cover.
  • a method shows e.g. DE-A 2 552 474.
  • the refractory molded block is made of gas-permeable material or has a directed porosity
  • the peripheral gap between the lateral outer surface of the molded block and the conical sheet metal sleeve is absolutely tight, otherwise the gas would not be targeted by the molded block but flow according to the principle of least constraint through the free gap between the molded block and the sheet metal casing.
  • the taper of the lateral outer surface of the molded block does not always exactly match the taper of the sheet metal sleeve, so that the sheet metal sleeve does not usually lie flush with the molded block over its entire circumference and its entire height.
  • a layer of mortar is therefore provided between the molded block and the sheet metal sleeve, with which tolerances can be compensated for.
  • This known method is relatively complex due to the application of the mortar layer.
  • a gap that is initially well sealed by the mortar joint is achieved.
  • the gap filling the gap is usually of different thickness over the circumference and height. If the flushing gas finally finds its way through the mortar joint and the joint material breaks out when the free outlet end of the molded block is closed, a so-called edge flusher is formed in which the flushing gas emerges from the flushing block in an uneven distribution or only on one edge side. As a result, the required fine distribution of the gas bubbles is no longer possible and the purging process of the melt is disrupted.
  • the invention has for its object to reduce the effort in the assembly method of the type mentioned and at the same time to create a better end product.
  • this object is achieved in that the conical sheet metal sleeve is heated before being placed on the molded block and then shrunk onto the molded block without a layer of mortar being applied between the molded block and the sheet metal sleeve.
  • the heating must be carried out to a sufficient temperature, which, depending on the material of the sheet metal sleeve, produces a sufficiently large excess.
  • heating temperatures in the order of 600 to 800 ° C are appropriate.
  • any type of dimensional inaccuracy be it on the molded block or on the sheet metal sleeve, is compensated for, so that the sheet metal sleeve shrinks over its entire circumference and their entire length lies evenly and close to the molded block.
  • the method according to the invention thus leads to a flawless product which guarantees a uniform and finely divided gas entry into the melt in all operating states, even in the case of edge flushing.
  • the method according to the invention can also be used with pure edge rinsers which have an impermeable molded block. In the case of edge washers, thin through channels are then preferably created in the area of the gap between the molded block and the sheet metal sleeve, for example by milling grooves in the molded block or by embossing beads in the sheet metal jacket.
  • the method itself is also considerably simplified since a mortar layer between the molded block and the sheet metal cladding can be dispensed with entirely.
  • the shaped block 1 which consists of refractory material, has a frustoconical shape.
  • the refractory material can either be porous, ie gas-permeable, or it is gas-impermeable and has a directional porosity in the form of thin, continuous channels.
  • the molded block 1 can also be completely impermeable to gas.
  • a conical sheet metal sleeve 2 is to be placed on the shaped block 1, the conicity of which corresponds to that of the shaped block 1.
  • the taper due to manufacturing deficiencies does not always exactly match, with deviations from the desired cone being observed both in the circumferential direction and over the length of the shaped block 1 or the sheet metal sleeve 2.
  • Deviations from the nominal size can be found in particular with the molded block 1, whereby not only out-of-roundness and deviations from the desired cone shape, but also individual humps or dents can be present.
  • the sheet metal sleeve 2 Before the sheet metal sleeve 2 is placed on the shaped block 1, it is heated to approximately 600 to 800 ° C., the temperature being chosen so that a sufficient excess is produced depending on the material selected. The degree of shrinkage is just as important, because greater inaccuracies of the parts can only be compensated for in the event of severe shrinkage.
  • the sheet metal sleeve 2 can be heated with a flame or, for example, in an annealing furnace.
  • the heated sheet metal sleeve 2 is then placed on the form stone 1, with the clear cross section 3 exactly with the narrower upper end of the form stone 1.
  • the sheet metal sleeve 2 shrinks onto the shaped block 1 and lies close to the shaped block 1 over its entire circumference and over its entire length at. Dimensional inaccuracies are completely compensated for, so that a uniformly tight gap between the molded block 1 and the sheet metal sleeve 2 is formed.
  • a sheet metal cover not shown in the drawing and provided with a gas supply pipe, is placed on the larger end face of the shaped block 1 and this is welded onto the shrunk-on sheet metal sleeve 2.
  • a sheet metal sleeve 2 is preferably used, which in the attached state protrudes a little over the wider end of the shaped block 1. After placing the sheet metal cover, the lower, protruding edge of the sheet metal sleeve 2 is flanged over the sheet metal cover and the flanged edge is welded to the sheet metal cover.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Furnace Details (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Air Bags (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
EP86108565A 1985-08-02 1986-06-24 Verfahren zur Montage eines für metallurgische Gefässe vorgesehenen Gasspülsteins Expired EP0211209B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86108565T ATE43361T1 (de) 1985-08-02 1986-06-24 Verfahren zur montage eines fuer metallurgische gefaesse vorgesehenen gasspuelsteins.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3527793 1985-08-02
DE19853527793 DE3527793A1 (de) 1985-08-02 1985-08-02 Verfahren zur montage eines fuer metallurgische gefaesse vorgesehenen gasspuelsteins

Publications (2)

Publication Number Publication Date
EP0211209A1 EP0211209A1 (de) 1987-02-25
EP0211209B1 true EP0211209B1 (de) 1989-05-24

Family

ID=6277540

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86108565A Expired EP0211209B1 (de) 1985-08-02 1986-06-24 Verfahren zur Montage eines für metallurgische Gefässe vorgesehenen Gasspülsteins

Country Status (11)

Country Link
US (1) US4768267A (enrdf_load_stackoverflow)
EP (1) EP0211209B1 (enrdf_load_stackoverflow)
JP (1) JPH07107478B2 (enrdf_load_stackoverflow)
KR (1) KR930005066B1 (enrdf_load_stackoverflow)
CN (1) CN1005065B (enrdf_load_stackoverflow)
AT (1) ATE43361T1 (enrdf_load_stackoverflow)
BR (1) BR8603648A (enrdf_load_stackoverflow)
CA (1) CA1277138C (enrdf_load_stackoverflow)
DE (2) DE3527793A1 (enrdf_load_stackoverflow)
ES (1) ES2000808A6 (enrdf_load_stackoverflow)
ZA (1) ZA864844B (enrdf_load_stackoverflow)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3642623A1 (de) * 1986-12-13 1988-06-23 Burbach & Bender Ohg Gasspuelstein fuer metallurgische gefaesse
DE3716388C1 (de) * 1987-05-15 1988-10-27 Radex Deutschland Ag Gasspuelstein
DE3717840A1 (de) * 1987-05-27 1988-12-15 Radex Deutschland Ag Feuerfester keramischer formkoerper
US4840356A (en) * 1988-06-13 1989-06-20 Labate Michael D Externally replaceable stirring plug for molten metal vessels
DE4021259C2 (de) * 1989-12-22 1994-02-24 Didier Werke Ag Verfahren zur Herstellung eines Verbundteiles
DE4025956A1 (de) * 1990-08-16 1992-02-20 Didier Werke Ag Feuerfeste fuellung eines ringspaltes bei einem metallurgischen gefaess
JP3061476B2 (ja) * 1992-04-24 2000-07-10 日本化薬株式会社 エトポシド燐酸エステルの製造法
US5279032A (en) * 1992-08-05 1994-01-18 Corporation Mexicano De Investigacion En Materiales, S.A. De C.V. Method of manufacturing a gas injection element
DE4315467A1 (de) * 1993-05-10 1994-11-17 Basf Lacke & Farben Füllstoffpaste zur Verwendung in Basislacken zur Beschichtung von Kunststoff- und Metallsubstraten, Basislacke sowie Verfahren zur Direktlackierung von Metall- und Kunststoffsubstraten
US5573724A (en) * 1994-07-29 1996-11-12 Magneco/Metrel, Inc. Ladle port assembly
DE19857639C1 (de) * 1998-12-14 1999-10-07 Dolomitwerke Gmbh Verfahren und Vorrichtung zur Herstellung eines Verbundelements aus einem keramischen Innenteil und einem Blechmantel
RU2230796C1 (ru) * 2003-03-06 2004-06-20 Хлопонин Виктор Николаевич Продувочный элемент агрегата для получения или доводки стали
CN1301269C (zh) * 2005-06-08 2007-02-21 江南大学 一种提取Iota－型卡拉胶的方法
CN101892355B (zh) * 2010-06-30 2012-07-04 浙江金磊高温材料股份有限公司 一种rh炉环流管及砌筑方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2552474A1 (de) * 1975-11-22 1977-05-26 Eiserntaler Spezial Schweissbe Gasspuelstein, insbesondere fuer schmelzwannen, -tiegel und dergleichen

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB684048A (en) * 1949-06-22 1952-12-10 Mini Of Mines And Technical Su The gas flushing of liquid masses
FR90233E (fr) * 1966-06-27 1967-11-03 Air Liquide Perfectionnement aux injecteurs, tuyères et brûleurs pour fours métallurgiques
US3579805A (en) * 1968-07-05 1971-05-25 Gen Electric Method of forming interference fits by heat treatment
DE2821595A1 (de) * 1978-05-17 1983-04-14 Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V., 3400 Göttingen Hochfestes keramikverbundrohr, seine herstellung und verwendung
CA1139923A (en) * 1979-02-28 1983-01-25 Toshio Yoshida Method of producing multiple-wall composite pipes
DE3341491C1 (de) * 1983-11-17 1985-07-11 Brohltal-Deumag AG für feuerfeste Erzeugnisse, 5401 Urmitz Gasspuelstein fuer metallurgische Gefaesse
DE3341447A1 (de) * 1983-11-17 1985-05-30 ESB Schweißbetrieb Burbach & Bender oHG, 5900 Siegen Gasspuelstein fuer metallurgische gefaesse
DE3341446C1 (de) * 1983-11-17 1985-07-11 Brohltal-Deumag AG für feuerfeste Erzeugnisse, 5401 Urmitz Gasspuelstein fuer metallurgische Gefaesse

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2552474A1 (de) * 1975-11-22 1977-05-26 Eiserntaler Spezial Schweissbe Gasspuelstein, insbesondere fuer schmelzwannen, -tiegel und dergleichen

Also Published As

Publication number Publication date
DE3663534D1 (en) 1989-06-29
ATE43361T1 (de) 1989-06-15
ZA864844B (en) 1987-03-25
KR930005066B1 (ko) 1993-06-15
JPS6233727A (ja) 1987-02-13
BR8603648A (pt) 1987-03-10
CN86104547A (zh) 1987-01-28
DE3527793A1 (de) 1987-02-12
CA1277138C (en) 1990-12-04
EP0211209A1 (de) 1987-02-25
US4768267A (en) 1988-09-06
CN1005065B (zh) 1989-08-30
KR870002279A (ko) 1987-03-30
ES2000808A6 (es) 1988-03-16
JPH07107478B2 (ja) 1995-11-15
DE3527793C2 (enrdf_load_stackoverflow) 1987-05-14

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