EP1144144B1 - Verfahren und vorrichtung zur erzeugung von runden knüppeln - Google Patents
Verfahren und vorrichtung zur erzeugung von runden knüppeln Download PDFInfo
- Publication number
- EP1144144B1 EP1144144B1 EP99964428A EP99964428A EP1144144B1 EP 1144144 B1 EP1144144 B1 EP 1144144B1 EP 99964428 A EP99964428 A EP 99964428A EP 99964428 A EP99964428 A EP 99964428A EP 1144144 B1 EP1144144 B1 EP 1144144B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- horizontal
- round
- vertical
- billet
- strand
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000005096 rolling process Methods 0.000 claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 13
- 239000010959 steel Substances 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 238000009749 continuous casting Methods 0.000 claims abstract description 10
- 238000005266 casting Methods 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 10
- 238000007711 solidification Methods 0.000 claims description 10
- 230000008023 solidification Effects 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 15
- 238000003756 stirring Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000005242 forging Methods 0.000 description 3
- 238000005204 segregation Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 229910000669 Chrome steel Inorganic materials 0.000 description 1
- 229910000915 Free machining steel Inorganic materials 0.000 description 1
- QFGIVKNKFPCKAW-UHFFFAOYSA-N [Mn].[C] Chemical compound [Mn].[C] QFGIVKNKFPCKAW-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
Images
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
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
Definitions
- the invention relates to a method and a device for producing continuously cast billets in one from a vertical continuous caster with a horizontal outlet, at least a descaling device and several subsequent rolling stands existing production facility.
- Billets produced in a vertical continuous caster with a horizontal outlet in the solidified state show material concentration differences above the Cross section on. In almost all steels, porous areas occur below the Surface and in the core area. Free-cutting steels are particularly affected. Carbon-manganese steels have segregations in the core area that make them from Z. B. complicate high-strength wires. It happens with high-carbon chrome steels for the formation of fluff in the core area, e.g. the quality of the inner surface of deteriorate rolled pipes of high precision.
- Austenitic stainless chrome-nickel steels have a high level depending on the chemical composition Proportion of 8-ferrite as the second phase, which is pronounced in the case of round billets Maximum at a distance of 0.4 to 0.7 x radius from the core and that The formability of these steels is strong in subsequent cross rolling processes reduced because the main forming zone is located in this cross-sectional area. As As a result, only low degrees of stretching can be achieved. From an average 8-ferrite content of > 4% there are general problems of formability in the form of cracks and shells.
- EMS electromagnetic stirring
- the disadvantage is that the Area near the surface is detected only to a small extent or only with vigorous stirring becomes.
- Another disadvantage is the stationary arrangement of EMS. So for that Stir the core area a second stirrer in the lower part of the continuous caster needed. Stirring too much can also cause core expansion due to the action of Conduct centrifugal force.
- the solidifying Round billets after leaving the mold and before entering the next one Descaled roller unit on its surface and the surface layer near the surface is pre-cooled to an optimal temperature for the respective steel the stick in at least three successive horizontal stitches and finally reshaped in a vertical stitch, the surface of the pre-deformed billet is descaled before the last stitch.
- the concentration differences across the cross-section e.g. in shape from segregations and second phases and their content greatly reduced becomes.
- the material density is determined by removing pores under the surface and in the Core area increased.
- the Pouring speed and / or the location of the place where the vertical stitch takes place so be controlled so that the swamp tip of the solidifying round stick in the The area between the third horizontal stitch and the vertical stitch lies and Complete solidification until at the latest when the vertical stitch is carried out to the core is guaranteed.
- This is an apparatus for performing the method according to the invention characterized in that between the vertical continuous caster and their horizontal outlet still in the arch part of the guide frame Primary descaling system and a multi-stand rolling unit with at least three successive horizontal stands are arranged and the horizontal stands in the horizontal part of the strand guide based on the position of the sump tip in Strand movement direction back and forth movable vertical frame with follow the attached descaling device.
- the round billets are in the area of the swamp tip at the end of the continuous casting arch first descaled, the surface layer near the surface is defined for one for the optimal temperature pre-cooled for each steel. Then there is one Forming first in the at least three successive horizontal stitches and the final vertical stitch, the surface of the pre-deformed Is descaled again before the last stitch.
- the number of horizontal stands results from the diameter of the billet, the casting speed and the realizable increase in the degree of vertical deformation in the horizontal stitches.
- the solidification of the core area is by choosing the Distance from the last fixed horizontal frame to the movable one Vertical frame completed. This allows the round shape of the stick in only a vertical stitch with increased decrease.
- the last of the Horizontal scaffolds can be designed to be adjustable in interaction with a downstream measuring device for measuring the height and width of the preformed The right pre-profile for billets in the sense of an automatic roll gap control to deliver the subsequent vertical circular stitch.
- the setting should be made so that the forming as uniformly as possible over the billet circumference while minimizing the tensile stress is distributed on the surface, the compressive stress on the Stick egg center is said to increase with the number of stitches and at the same time prevent spreading increases and the roundness and dimensional accuracy of the stick after exiting the Rolling unit can be guaranteed.
- the nozzles arranged in a ring around the round billet the primary descaling device with water or a water-air mixture supplied, the distance of the nozzles from the surface of the billet as well Pressure and intensity of the medium hitting the surface of the stick are optimized adjustable.
- the secondary descaling device consisting of at least one nozzle ring is flanged to the vertical scaffold and can be moved with it.
- the around the scope of the pre-deformed billets distributed in the horizontal stands are included Compressed air can be applied, the distance of the nozzles from the surface of the preformed billets and their distance from ring to ring and among themselves around the Ring circumference are optimized.
- the pre-deformation and Compression of the continuously cast primary material become pores closed, blowholes in their cross-sectional area by approx. 15 - 35% compared to the case reduced without pre-deformation. Differences in concentration in the form of segregations, Separations, second phases reduced and their content absolutely reduced.
- the pre-deformation also increases the surface quality of the billets improved and the risk of slipping in a subsequent cross rolling process reduced.
- the pre-deformed material structure enables compared to Continuous casting structure in subsequent shaping devices a higher one Degree of stretching due to higher forming capacity.
- the vertical round caster with horizontal outlet is designated, in the mold is a round billet with a diameter of between 90 and 300 mm poured and pulled down.
- the round stick 2 is in the
- the scaffold of the plant is redirected from the vertical to the horizontal direction treated in the manner according to the invention.
- the deformation takes place in one multi-stand rolling unit 4 consisting of three consecutive Horizontal rolling stands 5, each with false round calibration from two one inside the other passing radii.
- the last of the three horizontal stands is under load adjustable and provided with a roll gap control, which with the measuring device 8 for the height and width of the round stick correspond.
- a final descaling takes place at 7 after a secondary descaling Rolling the billet 2 in the vertical stand 6.
- This vertical stand 6 is in Arrow direction slidable to the location of its deformation at the location of the Adjust swamp tip of the round stick 2 so that the deformation is always in solidified area of the round stick 2 takes place.
- the location of the swamp tip can vary change according to casting speed, material and dimensions of the billet 2. In this case, the vertical frame 6 in the casting direction or in the opposite direction be shifted, or the casting speed is corresponding, possibly additional changed to shift the vertical frame 6.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Continuous Casting (AREA)
- Forging (AREA)
- Fish Paste Products (AREA)
Description
Claims (8)
- Verfahren zur Herstellung von stranggegossenen Knüppeln in einer aus einer Vertikal-Rundstranggießanlage mit horizontalem Auslauf, mindestens einer Entzunderungseinrichtung und mehreren nachfolgenden Walzgerüsten bestehenden Produktionsanlage,
dadurch gekennzeichnet, daß zur Herstellung von runden Knüppeln mit einem Durchmesser zwischen 90 und 300 mm, der erstarrende Rundknüppel nach Austritt aus der Kokille und vor Einlauf in die nachfolgende Walzeinheit an seiner Oberfläche entzundert und die öberflächennahe Randschicht definiert auf eine für den jeweiligen Stahl optimale Temperatur vorgekühlt wird, bevor der Rundknüppel in zunächst mindestens drei aufeinanderfolgenden Horizontalstichen und abschließend in einem Vertikalstich umgeformt wird, wobei die Oberfläche des vorverformten Knüppels vor dem letzten Stich nochmals entzundert wird. - Verfahren nach Anspruch 1,
dadurch gekennzeichnet, daß der Rundknüppel in den Horizontalstichen mit wachsendem Höhenumformgrad von ϕ = 0,01 bis 0,15 bei gleichzeitig infolge der fortschreitenden Erstarrung abnehmendem Durchmesser des flüssigen Kerns umgeformt wird und der Vertikalstich nach völliger Durcherstarrung des Rundknüppels im horizontalen Auslaufbereich der Produktionsanlage an einem Ort erfolgt, dessen Lage relativ zum Ort der Horizontalumformung in Achsrichtung des Stranges verstellbar ist. - Verfahren nach Anspruch 1 und 2,
dadurch gekennzeichnet, daß die Gießgeschwindigkeit und/oder die Lage des Ortes, an dem der Vertikaistich erfolgt, so gesteuert werden, daß die Sumpfspitze des erstarrenden Rundknüppels in dem Bereich zwischen dem dritten Horizontalstich und dem Vertikalstich liegt und spätestens beim Ausführen des Vertikalstiches eine vollständige Durcherstarrung bis zum Kern gewährleistet ist. - Vorrichtung zur Durchführung des Verfahrens zur Herstellung von stranggegossenen Knüppeln in einer Produktionsanlage, bestehend aus einer Vertikal-Rundstranggießanlage mit horizontalem Auslauf, mindestens einer Entzunderungseinrichtung und mehreren nachfolgenden Walzgerüsten
dadurch gekennzeichnet, daß zwischen der Vertikal-Rundstranggießanlage (1) und deren horizontalem Auslauf noch im Bogenteil des Führungsgerüstes eine Primärentzunderungsanlage (3) und eine mehrgerüstige Walzeinheit (4) mit mindestens drei aufeinanderfolgenden Horizontalgerüsten (5) angeordnet sind und den Horizontalgerüsten (5) im waagerechten Teil der Strangführung ein bezogen auf die Lage der Sumpfspitze in Strangbewegungsrichtung vor und zurück bewegliches Vertikalgerüst (6) mit angeflanschter Sekundärentzunderungseinrichtung (7) folgen. - Vorrichtung nach Anspruch 4,
dadurch gekennzeichnet, daß die Walzen der Horizontalgerüste (5) jeweils mit einer Falschrundkalibrierung, bestehend aus zwei ineinander übergehenden Radien, das letzte Horizontalgerüst (5) mit einer Walzspaltanstellung unter Last und die Walzen des Vertikalgerüstes (6) mit einer aufgeschnittenen Rundkalibrierung ausgestattet sind. - Vorrichtung nach Anspruch 4 oder 5,
dadurch gekennzeichnet, daß die um den Rundknüppel (2) ringförmig angeordneten Düsen der Primärentzunderungseinrichtung (3) mit Wasser oder einem Wasser-Luft-Gemisch versorgt werden und der Abstand der Düsen von der Oberfläche des Rundknüppels (2) sowie Druck und Intensität des auf die Oberfläche des Rundknüppels (2) auftreffenden Mediums optimiert einstellbar sind. - Vorrichtung nach Anspruch 4 oder 5,
dadurch gekennzeichnet, daß die aus mindestens einem Düsenring bestehende Sekundärentzunderunsgeinrichtung (7) am Vertikalgerüst (6) angeflanscht und mit diesem verschiebbar ist und die um den Umfang des in den Horizontalgerüsten (5) vorverformten Rundknüppels (2) verteilten Düsen mit Druckluft beaufschlagbar sind, wobei Abstand der Düsen von der Oberfläche des vorverformten Rundknüppels (2) und ihr Abstand von Ring zu Ring und untereinander um den Ringumfang optimiert sind. - Vorrichtung nach Anspruch 7,
dadurch gekennzeichnet, daß das letzte der Horizontalgerüste (5) unter Last anstellbar ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19860570 | 1998-12-22 | ||
DE19860570A DE19860570C1 (de) | 1998-12-22 | 1998-12-22 | Verfahren zur Erzeugung von runden Knüppeln |
PCT/DE1999/003959 WO2000037200A1 (de) | 1998-12-22 | 1999-12-07 | Verfahren zur erzeugung von runden knüppeln |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1144144A1 EP1144144A1 (de) | 2001-10-17 |
EP1144144B1 true EP1144144B1 (de) | 2002-07-03 |
Family
ID=7893020
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99964428A Expired - Lifetime EP1144144B1 (de) | 1998-12-22 | 1999-12-07 | Verfahren und vorrichtung zur erzeugung von runden knüppeln |
Country Status (12)
Country | Link |
---|---|
US (1) | US6491771B1 (de) |
EP (1) | EP1144144B1 (de) |
JP (1) | JP4430828B2 (de) |
KR (1) | KR100658647B1 (de) |
CN (1) | CN1170646C (de) |
AT (1) | ATE219977T1 (de) |
AU (1) | AU3031200A (de) |
BR (1) | BR9916414A (de) |
CA (1) | CA2356609C (de) |
DE (2) | DE19860570C1 (de) |
ES (1) | ES2176042T3 (de) |
WO (1) | WO2000037200A1 (de) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10325955A1 (de) * | 2003-06-07 | 2004-12-23 | Sms Demag Ag | Verfahren und Anlage zum Erzeugen von Stahlprodukten mit bester Oberflächenqualität |
CN100382906C (zh) * | 2005-04-21 | 2008-04-23 | 天津钢铁有限公司 | 高碳钢盘条生产工艺技术 |
CN100560250C (zh) * | 2007-10-29 | 2009-11-18 | 江阴兴澄特种钢铁有限公司 | 在R12~14m的弧形连铸机上生产特大规格圆坯的连铸工艺 |
EP2263816A1 (de) * | 2009-06-03 | 2010-12-22 | Concast Ag | Verfahren und Einrichtung zum Führen und Richten des Strangs in einer Stranggiessanlage für grossformatige Rundprofile |
CN101885133B (zh) * | 2010-07-15 | 2012-05-09 | 武汉钢铁(集团)公司 | 一种提高钢材组织均匀性方法及其设备 |
PL3012043T3 (pl) * | 2013-06-20 | 2018-07-31 | Nippon Steel & Sumitomo Metal Corporation | Sposób ciągłego odlewania kęsisk płaskich |
CN103894572B (zh) * | 2014-04-10 | 2016-09-07 | 北京科技大学 | 一种连铸坯预处理方法 |
CN105363867B (zh) * | 2015-09-25 | 2018-01-05 | 石家庄安瑞科气体机械有限公司 | 大容积厚壁高压储氢钢内胆的加工工艺 |
CN110181018B (zh) * | 2018-05-17 | 2022-01-14 | 江阴兴澄特种钢铁有限公司 | 一种连铸坯厚度在线测量及压下量调整系统 |
KR102170939B1 (ko) * | 2018-11-27 | 2020-10-29 | 주식회사 포스코 | 압연소재 처리설비 및 처리방법 |
CN109622904B (zh) * | 2019-02-01 | 2020-06-02 | 东北大学 | 一种实现连铸圆坯凝固过程芯部压下工艺的装置及方法 |
CN110385410B (zh) * | 2019-08-01 | 2024-07-09 | 中冶赛迪工程技术股份有限公司 | 一种连铸设备及其工艺 |
CN113333707B (zh) * | 2021-06-11 | 2022-08-05 | 陕钢集团汉中钢铁有限责任公司 | 一种r10米弧连铸机无夹持段浇注矩形坯的方法 |
CN114054700B (zh) * | 2021-10-15 | 2022-11-15 | 东北大学 | 圆坯的压下方法及装置 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT280191B (de) * | 1966-12-01 | 1970-04-10 | Gerb Boehler & Co Ag | Verfahren zur Herstellung von Walzprodukten aus Stranggußerzeugnissen mit Hilfe von zwei Walzenpaaren |
JPS6186057A (ja) * | 1984-10-05 | 1986-05-01 | Nippon Kokan Kk <Nkk> | 丸ビレツトの連続鋳造方法 |
JPH069707B2 (ja) * | 1988-10-28 | 1994-02-09 | 新日本製鐵株式会社 | 連続鋳造鋼片の脱スケール方法 |
DE4010963A1 (de) * | 1990-04-05 | 1991-10-10 | Schloemann Siemag Ag | Vorrichtung zur beseitigung von zunder und/oder schlacke an den oberflaechen eines metallgiessstranges |
DE4123956C2 (de) * | 1991-07-19 | 1994-07-21 | Thyssen Stahl Ag | Verfahren und Anlage zum Herstellen eines Metallstranges durch Gießen |
JP3807628B2 (ja) * | 1994-10-20 | 2006-08-09 | マンネスマン・アクチエンゲゼルシャフト | 冷間圧延特性を有する帯鋼製造方法及び装置 |
-
1998
- 1998-12-22 DE DE19860570A patent/DE19860570C1/de not_active Expired - Fee Related
-
1999
- 1999-12-07 ES ES99964428T patent/ES2176042T3/es not_active Expired - Lifetime
- 1999-12-07 JP JP2000589298A patent/JP4430828B2/ja not_active Expired - Fee Related
- 1999-12-07 DE DE59901981T patent/DE59901981D1/de not_active Expired - Lifetime
- 1999-12-07 KR KR1020017007992A patent/KR100658647B1/ko not_active IP Right Cessation
- 1999-12-07 CA CA002356609A patent/CA2356609C/en not_active Expired - Fee Related
- 1999-12-07 CN CNB998150045A patent/CN1170646C/zh not_active Expired - Fee Related
- 1999-12-07 US US09/868,807 patent/US6491771B1/en not_active Expired - Fee Related
- 1999-12-07 WO PCT/DE1999/003959 patent/WO2000037200A1/de active IP Right Grant
- 1999-12-07 EP EP99964428A patent/EP1144144B1/de not_active Expired - Lifetime
- 1999-12-07 AU AU30312/00A patent/AU3031200A/en not_active Abandoned
- 1999-12-07 AT AT99964428T patent/ATE219977T1/de not_active IP Right Cessation
- 1999-12-07 BR BR9916414-0A patent/BR9916414A/pt not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
US6491771B1 (en) | 2002-12-10 |
CN1331616A (zh) | 2002-01-16 |
CN1170646C (zh) | 2004-10-13 |
ATE219977T1 (de) | 2002-07-15 |
BR9916414A (pt) | 2001-09-18 |
EP1144144A1 (de) | 2001-10-17 |
DE59901981D1 (de) | 2002-08-08 |
CA2356609A1 (en) | 2000-06-29 |
DE19860570C1 (de) | 2000-10-05 |
CA2356609C (en) | 2008-03-25 |
KR100658647B1 (ko) | 2006-12-15 |
ES2176042T3 (es) | 2002-11-16 |
JP4430828B2 (ja) | 2010-03-10 |
KR20010089679A (ko) | 2001-10-08 |
AU3031200A (en) | 2000-07-12 |
WO2000037200A1 (de) | 2000-06-29 |
JP2002532259A (ja) | 2002-10-02 |
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