EP1291099A2 - Procédé et dispositif pour optimiser la qualité de lingots coulés en continu, comportants une section circulaire ou quasi circulaire - Google Patents

Procédé et dispositif pour optimiser la qualité de lingots coulés en continu, comportants une section circulaire ou quasi circulaire Download PDF

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Publication number
EP1291099A2
EP1291099A2 EP02019561A EP02019561A EP1291099A2 EP 1291099 A2 EP1291099 A2 EP 1291099A2 EP 02019561 A EP02019561 A EP 02019561A EP 02019561 A EP02019561 A EP 02019561A EP 1291099 A2 EP1291099 A2 EP 1291099A2
Authority
EP
European Patent Office
Prior art keywords
casting
round
cross
strand
rollers
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Withdrawn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
EP02019561A
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German (de)
English (en)
Other versions
EP1291099A8 (fr
EP1291099A3 (fr
Inventor
Hans Streubel
Klaus Dr. Harste
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.)
SMS Siemag AG
Original Assignee
SMS Demag 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 SMS Demag AG filed Critical SMS Demag AG
Publication of EP1291099A2 publication Critical patent/EP1291099A2/fr
Publication of EP1291099A8 publication Critical patent/EP1291099A8/fr
Publication of EP1291099A3 publication Critical patent/EP1291099A3/fr
Withdrawn legal-status Critical Current

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    • 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
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/1206—Accessories for subsequent treating or working cast stock in situ for plastic shaping of strands
    • 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
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing

Definitions

  • the invention relates to a method for optimizing the quality of at least a casting machine with mold continuous castings with round or approximately round cross-sections or cross-sectional areas in the area of soft reduction (Residual solidification).
  • the invention also relates to a device for Execution of the procedure.
  • the reduction in the thickness of cast strands known as soft reduction is known below the casting mold in continuous casting plants.
  • the strand is usually used with one or more rolls or roll segments reduced in thickness, in order to improve the internal quality of the casting strand, i.e. Reduce nuclear segregation and core porosity inside the strand.
  • This procedure requires in the case of rectangular continuous casting cross sections as a result the strand elongation a comparatively large decrease in thickness to the desired To improve the internal quality of the casting strand. For this is, however, a high effort and a correspondingly large mechanical engineering Effort required.
  • a significant improvement is achieved by profiling the continuous casting cross section reached on one or two sides. Through such profiling, the desired reduction in core segregation is comparatively less expensive and enables core porosity.
  • the document WO 00/37 200 describes a process for the production of continuous cast billets in a vertical continuous caster with horizontal Outlet, followed by at least one descaling device and several Rolling mills.
  • the one in the vertical continuous caster with horizontal The billets produced in the outlet show differences in the solidified state Material concentration across the cross section. It is reported that almost All steels have porous spots below the surface and in the core area. Free-cutting steels are particularly affected. Show carbon-manganese steels Segments in the core area, which include the production of e.g. high strength Complicate wires.
  • High-carbon chrome steels form Lint in the core area, which, for example, the quality of the inner surfaces greatly deteriorate from pickled pipes of high precision.
  • Chromium-nickel steels have one depending on their chemical composition Part of the high proportion of delta ferrite as a second fiber, which is used for round billets pronounced maximum at a distance of 0.4 to 0.7 x radius from the core and the formability of these steels in subsequent cross rolling processes greatly reduced, since the main forming zone is located in this cross-sectional area. As a result, only low degrees of stretching can be achieved. From a medium one Delta ferrite content of around 4% gives rise to general problems of formability for example in the form of cracks.
  • the described prior art has the overall disadvantage that the Possibilities for influencing different material concentrations over the billet cross-section of those cast in the vertical continuous caster Bludgeons are restricted.
  • the object of the invention based on specifying a method and a device by which the quality of continuous castings with round or approximately round cross-section or cross-sectional areas with technically uncomplicated and to optimize economically favorable means.
  • An embodiment of the method provides that round, in particular comparative large strand cross-sections, or strand cross-sectional areas for Avoidance of structural cracks or uncontrolled deformation of the strand this, thanks to rollers that can be adjusted on both sides and offset by approximately 90 ° to the reduction level is supported. These support rollers can also be a minor at the same time Take over forming without increasing the susceptibility to cracking.
  • a further embodiment of the method according to the invention provides that the round or nearly round pouring cross-section through adjustable on both sides, um Rollers offset by 90 ° to the reduction plane in the area of residual solidification Amount between 5 and 60% of the main reduction is deformed. This will a further core compression in the soft reduction section and thus a considerable one Quality improvement of the inner cross section of the cast strand reached before this is formed into the final cross section in rolling stands.
  • the position of the sump tip in the cast strand depends on the steel quality, Melt temperature, casting speed, casting powder and amount of water spray is calculated and the position of the roles is adjusted accordingly.
  • a device is also used to carry out the method according to the invention proposed to optimize the quality of in at least one casting machine continuous casting with continuous or approximate with continuous mold round cross-section or cross-sectional areas in the area of residual solidification provides adjustable roles that with an approximately cylindrical or to the Rounding of the casting formats are adapted profiling, the Profile radius is at least 1.5 times the largest casting format radius.
  • An embodiment of the device is further characterized in that in the case of round or approximately round, in particular comparatively large Strand cross-sections or cross-sectional areas to avoid structural cracks or uncontrolled deformations of the casting strand, this, in the area the residual solidification can be adjusted on both sides and is offset by approx. 90 ° to the reduction level Roles.
  • This device can be used for the first time Circular cross-sections or similar cross-sections, free of nuclear segregation and Core porosities are created, reducing the internal quality of the cast Strands is optimized.
  • Figure 1 shows a side view of a circular continuous caster with horizontal Spout for an endless cast steel casting 1 with a round or approximately round cross-section or cross-sectional areas.
  • the continuous casting plant comprises the mold 2 with guide rollers arranged below its outlet 3, 3 'comparatively small diameter.
  • the cast strand 1 already forms in the mold 2 from solidifying at the edge Melt.
  • the strand with liquid core emerging from the mold becomes targeted cooling in the secondary cooling section, which means that the continuous shell is continuously grows and becomes a solid core.
  • the strand becomes in the area of residual solidification with the help of adjustable rollers 4, 5 in at least one reduction level reduced and deformed in cross-section. By the deformation of the strand in the area of residual solidification, nuclear segregation and core porosity are reduced.
  • the casting strand 1 can be adjusted on both sides by approximately 90 ° to the reduction level Rollers 4, 5 supported and guided and possibly slightly deformed.
  • the round or approximately round casting cross-section thanks to rollers that can be adjusted on both sides and offset by 90 ° to the reduction level deformed by an amount between 5 and 60% of the main reduction, which the further core compression and thus increase the internal quality of the cast strand serves.
  • FIG. 1 The position of the sump tip 5 in the area of the residual solidification 8 can be seen in FIG. 1, which according to the steel quality, the melting temperature, the Casting speed, the lubricant and / or the amount of spray water can be calculated and is adjustable, the employment of the rollers 4, 5 accordingly is adjusted.
  • roller 2 shows a strand cross section in a reduction plane. In vertical Direction, the strand is through the rollers 4 and in a horizontal plane the rollers 5 deformed.
  • the rollers can be cylindrical and / or profiled become.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
EP20020019561 2001-09-08 2002-09-02 Procédé et dispositif pour optimiser la qualité de lingots coulés en continu, comportants une section circulaire ou quasi circulaire Withdrawn EP1291099A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2001144234 DE10144234A1 (de) 2001-09-08 2001-09-08 Verfahren und Vorrichtung zur Optimierung der Qualität von Gussträngen mit runden oder annähernd runden Querschnitten
DE10144234 2001-09-08

Publications (3)

Publication Number Publication Date
EP1291099A2 true EP1291099A2 (fr) 2003-03-12
EP1291099A8 EP1291099A8 (fr) 2003-05-28
EP1291099A3 EP1291099A3 (fr) 2003-12-10

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Family Applications (1)

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EP20020019561 Withdrawn EP1291099A3 (fr) 2001-09-08 2002-09-02 Procédé et dispositif pour optimiser la qualité de lingots coulés en continu, comportants une section circulaire ou quasi circulaire

Country Status (2)

Country Link
EP (1) EP1291099A3 (fr)
DE (1) DE10144234A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107243611A (zh) * 2017-06-01 2017-10-13 东北大学 一种大方坯连铸凝固末端单辊压下位置确定方法
IT201600102472A1 (it) * 2016-10-12 2018-04-12 Danieli Off Mecc Dispositivo per la soft reduction di prodotti metallici di sezione tonda
US20220362833A1 (en) * 2019-12-23 2022-11-17 Gfm Gmbh Method for machining a metal cast strand of round cross-section by reducing the cross-section in the final solidification region

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09295113A (ja) * 1996-04-30 1997-11-18 Nkk Corp 連続鋳造による丸鋳片の製造方法
JPH09300053A (ja) * 1996-05-16 1997-11-25 Nkk Corp クロム合金鋼丸ビレット鋳片の製造方法
JPH1052744A (ja) * 1996-08-06 1998-02-24 Sumitomo Metal Ind Ltd 丸ビレット連鋳鋳片の製造方法と装置
JPH10128512A (ja) * 1996-10-28 1998-05-19 Sumitomo Metal Ind Ltd 丸ビレットの未凝固圧下製造方法
JPH10146651A (ja) * 1996-09-17 1998-06-02 Sumitomo Metal Ind Ltd 連続鋳造による丸ビレット鋳片の製造方法
JPH11216547A (ja) * 1998-01-28 1999-08-10 Sumitomo Metal Ind Ltd 連続鋳造による丸ビレット鋳片の製造方法と装置
JPH11309552A (ja) * 1998-04-23 1999-11-09 Sumitomo Metal Ind Ltd 連続鋳造丸鋳片の製造方法とその製造装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09295113A (ja) * 1996-04-30 1997-11-18 Nkk Corp 連続鋳造による丸鋳片の製造方法
JPH09300053A (ja) * 1996-05-16 1997-11-25 Nkk Corp クロム合金鋼丸ビレット鋳片の製造方法
JPH1052744A (ja) * 1996-08-06 1998-02-24 Sumitomo Metal Ind Ltd 丸ビレット連鋳鋳片の製造方法と装置
JPH10146651A (ja) * 1996-09-17 1998-06-02 Sumitomo Metal Ind Ltd 連続鋳造による丸ビレット鋳片の製造方法
JPH10128512A (ja) * 1996-10-28 1998-05-19 Sumitomo Metal Ind Ltd 丸ビレットの未凝固圧下製造方法
JPH11216547A (ja) * 1998-01-28 1999-08-10 Sumitomo Metal Ind Ltd 連続鋳造による丸ビレット鋳片の製造方法と装置
JPH11309552A (ja) * 1998-04-23 1999-11-09 Sumitomo Metal Ind Ltd 連続鋳造丸鋳片の製造方法とその製造装置

Non-Patent Citations (10)

* Cited by examiner, † Cited by third party
Title
DO THONG P ET AL: "MODELISATION THERMOMECANIQUE DES PRODUITS LONGS DE COULEE CONTINUE.APPLICATION A LA MAITRISE DE LA SANTE INTERNE PAR REDUCTION DOUCE" CAHIERS D'INFORMATIONS TECHNIQUES DE LA REVUE DE METALLURGIE, REVUE DE METALLURGIE. PARIS, FR, Bd. 92, Nr. 4, 1. April 1995 (1995-04-01), Seiten 527-534, XP000511005 ISSN: 0035-1563 *
ITO Y ET AL: "INTERNAL REDUCTION EFFICIENCY OF CONTINUOUSLY CAST STRAND WITH LIQUID CORE" CAHIERS D'INFORMATIONS TECHNIQUES DE LA REVUE DE METALLURGIE, REVUE DE METALLURGIE. PARIS, FR, Bd. 97, Nr. 10, Oktober 2000 (2000-10), Seiten 1171-1176, XP001124156 ISSN: 0035-1563 *
KAWABERI M ET AL: "DEVELOPMENT OF HIGH QUALITY BAR AND ROD BY APPLYING CONTINUOUS FORGING AT CONTINUOUS CASTER" CAHIERS D'INFORMATIONS TECHNIQUES DE LA REVUE DE METALLURGIE, REVUE DE METALLURGIE. PARIS, FR, Bd. 89, Nr. 2, 1. Februar 1992 (1992-02-01), Seiten 155-162, XP000267961 ISSN: 0035-1563 *
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 03, 27. Februar 1998 (1998-02-27) -& JP 09 295113 A (NKK CORP), 18. November 1997 (1997-11-18) *
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 03, 27. Februar 1998 (1998-02-27) -& JP 09 300053 A (NKK CORP), 25. November 1997 (1997-11-25) *
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 06, 30. April 1998 (1998-04-30) -& JP 10 052744 A (SUMITOMO METAL IND LTD), 24. Februar 1998 (1998-02-24) *
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 10, 31. August 1998 (1998-08-31) -& JP 10 128512 A (SUMITOMO METAL IND LTD), 19. Mai 1998 (1998-05-19) *
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 11, 30. September 1998 (1998-09-30) -& JP 10 146651 A (SUMITOMO METAL IND LTD), 2. Juni 1998 (1998-06-02) *
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 13, 30. November 1999 (1999-11-30) -& JP 11 216547 A (SUMITOMO METAL IND LTD), 10. August 1999 (1999-08-10) *
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 02, 29. Februar 2000 (2000-02-29) -& JP 11 309552 A (SUMITOMO METAL IND LTD), 9. November 1999 (1999-11-09) *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201600102472A1 (it) * 2016-10-12 2018-04-12 Danieli Off Mecc Dispositivo per la soft reduction di prodotti metallici di sezione tonda
WO2018069854A1 (fr) * 2016-10-12 2018-04-19 Danieli & C. Officine Meccaniche S.P.A. Dispositif de réduction douce de produits métalliques à section ronde
JP2019530581A (ja) * 2016-10-12 2019-10-24 ダニエリ アンド シー．オフィス メカニケ エスピーエーＤａｎｉｅｌｉ＆Ｃ．Ｏｆｆｉｃｉｎｅ Ｍｅｃｃａｎｉｃｈｅ Ｓｐａ 円形断面の金属製品の軽圧下のための装置
US10744559B2 (en) 2016-10-12 2020-08-18 Daniel & C. Officine Meccaniche S.P.A. Device for the soft reduction of round-section metal products
CN107243611A (zh) * 2017-06-01 2017-10-13 东北大学 一种大方坯连铸凝固末端单辊压下位置确定方法
CN107243611B (zh) * 2017-06-01 2019-01-11 东北大学 一种大方坯连铸凝固末端单辊压下位置确定方法
US20220362833A1 (en) * 2019-12-23 2022-11-17 Gfm Gmbh Method for machining a metal cast strand of round cross-section by reducing the cross-section in the final solidification region

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Publication number Publication date
EP1291099A8 (fr) 2003-05-28
DE10144234A1 (de) 2003-03-27
EP1291099A3 (fr) 2003-12-10

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