EP0023034A1 - Procédé pour le recalibrage d'un tube de lingotière conique usé, en particulier pour une lingotière courbe de coulée continue - Google Patents

Procédé pour le recalibrage d'un tube de lingotière conique usé, en particulier pour une lingotière courbe de coulée continue Download PDF

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Publication number
EP0023034A1
EP0023034A1 EP80104173A EP80104173A EP0023034A1 EP 0023034 A1 EP0023034 A1 EP 0023034A1 EP 80104173 A EP80104173 A EP 80104173A EP 80104173 A EP80104173 A EP 80104173A EP 0023034 A1 EP0023034 A1 EP 0023034A1
Authority
EP
European Patent Office
Prior art keywords
mold
tube
mandrel
continuous casting
conical
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
Application number
EP80104173A
Other languages
German (de)
English (en)
Other versions
EP0023034B1 (fr
Inventor
Diethelm Mettler
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.)
Accumold AG
Original Assignee
Accumold 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 Accumold AG filed Critical Accumold AG
Priority to AT80104173T priority Critical patent/ATE2654T1/de
Publication of EP0023034A1 publication Critical patent/EP0023034A1/fr
Application granted granted Critical
Publication of EP0023034B1 publication Critical patent/EP0023034B1/fr
Expired 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
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/057—Manufacturing or calibrating the moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/06—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure by shock waves
    • B21D26/08—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure by shock waves generated by explosives, e.g. chemical explosives
    • 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
    • Y10T29/49718—Repairing
    • Y10T29/49748—Repairing by shaping, e.g., bending, extruding, turning, etc.
    • 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
    • Y10T29/49805—Shaping by direct application of fluent pressure
    • Y10T29/49806—Explosively shaping

Definitions

  • the invention relates to a method for recalibrating a worn, conical, in particular bent, mold tube for continuous casting, wherein a single-gauge mandrel is inserted into the mold cavity, explosives are attached to the outside of the tube, and the mold cavity is deformed by its detonation to the dimensions of the gauge mandrel.
  • the walls of these molds forming the mold cavity are made of copper or copper alloys.
  • the walls of these molds forming the mold cavity are made of copper or copper alloys.
  • they are usually made from pipes.
  • the majority of the tubular molds is provided with a taper towards the withdrawal side of the strand.
  • thermal voltages that cannot be avoided lead to the mold tube being drawn in in the area of the bath level and to widening, reinforced by abrasion, at the end of the mold that withdraws from the strand, which leads to an undesirable “wrong conicity”.
  • the method according to the invention makes it possible to provide a conical mold with an opposite conicity, i.e. the original strand exit side of the used mold becomes the pouring side of the recalibrated mold, whereby the remaining errors mentioned in the former bath level area reach the area of the new strand exit end.
  • these defects have no negative influence on the solidification behavior of the strand, since a strand skin has already formed in this area of the mold, liquid steel no longer has access to the mold wall and can therefore no longer penetrate into the cracks. Surface defects on the solidified strand or strand breakthroughs in the mold can thus be avoided.
  • a mold tube, which previously had to be scrapped, can be used for at least one further mold trip due to the recalibration according to the invention.
  • the cross section of the original strand exit side of the mold is widened to make it easier to insert the mandrel becomes. This is conveniently done by explosive deformation, advantageously explosive charges being detonated in the four corner areas of the mold cavity and at the same time essentially in the central areas of the outside of the mold tube.
  • the caliber mandrel By widening the tube end with a smaller cross section before recalibration, the caliber mandrel can be inserted easily even in the case of mold tubes that are very strongly drawn in the bath level area. By attaching the explosive charges, a uniform cross-sectional enlargement is achieved on all sides. As a result, mold tubes, which due to the described indentations and the associated intolerable changes in conicity could no longer be used or renewed, are also recalibrated and thus used again.
  • the caliber mandrel 2 is introduced in the direction of the arrow 7, the tube part 10 shown in broken lines being expanded further in accordance with the shape of the caliber mandrel 2.
  • the deformation imposed on the tubular part 10 in this way is partly plastic, partly elastic.
  • an air gap 11 is created due to the conicity oriented towards one another, which can be up to a few millimeters depending on the shape of the caliber mandrel 2.
  • the mold tube ends are then closed by means of base plates (not shown), 12 explosive charges are attached to the outside of the tube, mold tube 1 and mandrel 2 are placed as a unit in a container filled with water and the charges are electrically ignited.
  • the mold tube 1 is plastically deformed with its inner dimensions onto the outer dimension of the mandrel 2, the nominal dimension. This reverses the original taper of the mold tube. In this way, healthy, crack-free pipe material gets into the new bath level area, while the existing surface defects 13 in the area of the new strand outlet, in which they have no negative E inchen can exert on the slab quality, be relocated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Manufacturing & Machinery (AREA)
  • Continuous Casting (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Moulding By Coating Moulds (AREA)
  • Manufacture And Refinement Of Metals (AREA)
EP80104173A 1979-07-20 1980-07-17 Procédé pour le recalibrage d'un tube de lingotière conique usé, en particulier pour une lingotière courbe de coulée continue Expired EP0023034B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80104173T ATE2654T1 (de) 1979-07-20 1980-07-17 Verfahren zum rekalibrieren eines verschlissenen, konischen, insbesondere gebogenen kokillenrohres fuer das stranggiessen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH6768/79 1979-07-20
CH676879A CH638411A5 (de) 1979-07-20 1979-07-20 Verfahren zum verformen eines verschlissenen, konischen, insbesondere gebogenen kokillenrohres.

Publications (2)

Publication Number Publication Date
EP0023034A1 true EP0023034A1 (fr) 1981-01-28
EP0023034B1 EP0023034B1 (fr) 1983-03-02

Family

ID=4314734

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80104173A Expired EP0023034B1 (fr) 1979-07-20 1980-07-17 Procédé pour le recalibrage d'un tube de lingotière conique usé, en particulier pour une lingotière courbe de coulée continue

Country Status (8)

Country Link
US (1) US4457151A (fr)
EP (1) EP0023034B1 (fr)
JP (1) JPS5617123A (fr)
AT (1) ATE2654T1 (fr)
BR (1) BR8004441A (fr)
CA (1) CA1166423A (fr)
CH (1) CH638411A5 (fr)
DE (1) DE3062204D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1317979A1 (fr) * 2001-12-07 2003-06-11 KM Europa Metal Aktiengesellschaft Méthode pour la calibration d'un moule de coulée par formage par explosion

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3211440C2 (de) * 1982-03-27 1984-04-26 Kabel- und Metallwerke Gutehoffnungshütte AG, 3000 Hannover Verfahren zur Herstellung einer Stranggießkokille mit einem mit mindestens einem Flansch versehenen Kokillenrohr aus Kupfer oder einer Kupferlegierung
CH670656A5 (fr) * 1987-04-14 1989-06-30 Fischer Ag Georg
DE19834394A1 (de) * 1998-07-30 2000-02-03 Rheinmetall W & M Gmbh Waffenrohr mit einer verschleißmindernden Hartchromschicht
CN103480810B (zh) * 2013-10-11 2015-07-29 重庆大学 一种h型坯连铸结晶器内腔锥度确定方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2452573A1 (de) * 1973-11-06 1975-05-07 Lorne Russell Shrum Verfahren zur herstellung einer roehrenfoermigen kupferform fuer das kontinuierliche giessen von metall
DE2533528B2 (de) * 1974-07-29 1976-09-02 Concast Inc., New York, N.Y. (V.St.A.) Verfahren zum verformen von waenden fuer stranggiesskokillen und kokillen
US4081983A (en) * 1977-03-29 1978-04-04 Lorne Russell Shrum Molds for the continuous casting of metals

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3646799A (en) * 1969-12-15 1972-03-07 Kabel Und Metalwerke Gutchoffn Method of making molds for continuous casting machines

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2452573A1 (de) * 1973-11-06 1975-05-07 Lorne Russell Shrum Verfahren zur herstellung einer roehrenfoermigen kupferform fuer das kontinuierliche giessen von metall
DE2533528B2 (de) * 1974-07-29 1976-09-02 Concast Inc., New York, N.Y. (V.St.A.) Verfahren zum verformen von waenden fuer stranggiesskokillen und kokillen
US4081983A (en) * 1977-03-29 1978-04-04 Lorne Russell Shrum Molds for the continuous casting of metals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1317979A1 (fr) * 2001-12-07 2003-06-11 KM Europa Metal Aktiengesellschaft Méthode pour la calibration d'un moule de coulée par formage par explosion

Also Published As

Publication number Publication date
CA1166423A (fr) 1984-05-01
ATE2654T1 (de) 1983-03-15
JPS5617123A (en) 1981-02-18
DE3062204D1 (en) 1983-04-07
CH638411A5 (de) 1983-09-30
EP0023034B1 (fr) 1983-03-02
BR8004441A (pt) 1981-01-27
US4457151A (en) 1984-07-03
JPS626899B2 (fr) 1987-02-14

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