EP1144144A1 - Verfahren zur erzeugung von runden knüppeln - Google Patents
Verfahren zur erzeugung von runden knüppelnInfo
- Publication number
- EP1144144A1 EP1144144A1 EP99964428A EP99964428A EP1144144A1 EP 1144144 A1 EP1144144 A1 EP 1144144A1 EP 99964428 A EP99964428 A EP 99964428A EP 99964428 A EP99964428 A EP 99964428A EP 1144144 A1 EP1144144 A1 EP 1144144A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- horizontal
- vertical
- round
- stitch
- production
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims abstract description 17
- 238000005096 rolling process Methods 0.000 claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 12
- 238000009749 continuous casting Methods 0.000 claims abstract description 12
- 239000010959 steel Substances 0.000 claims abstract description 12
- 238000005266 casting Methods 0.000 claims description 14
- 238000007711 solidification Methods 0.000 claims description 9
- 230000008023 solidification Effects 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 3
- 239000002344 surface layer Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 230000000750 progressive effect Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 description 13
- 238000003756 stirring Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000005242 forging Methods 0.000 description 3
- 238000005204 segregation Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000000126 substance Substances 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
- 229910052799 carbon Inorganic materials 0.000 description 1
- 210000000080 chela (arthropods) Anatomy 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000843 powder Substances 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
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 process for the production of continuously cast billets in a production plant consisting of a vertical round casting system with a horizontal outlet, at least one descaling device and a plurality of subsequent rolling stands
- austenitic, rust-free chromium-nickel steels have a partly high proportion of ⁇ -Fernt, which is a pronounced maximum in the case of round knobs at a distance of 0.4 to 0.7 x radius from the core and the forming capacity of these steels is greatly reduced in subsequent cross-rolling processes, since the main forming zone is located in this cross-sectional area.As a result, only low degrees of stretching can be achieved.
- Another possibility is the electromagnetic stirring (EMS) of the solidifying melt in the strand with the advantage of breaking the solidifying crystallites, the mixing and the resulting fine globular solidification structure in a large inner area of the strand cross section.
- EMS electromagnetic stirring
- the disadvantage is that the area close to the surface is only to a small extent or is only detected in the event of strong stirring
- Another disadvantage is the stationary arrangement of EMS.
- a second stirrer is required in the lower part of the continuous casting plant for stirring the core area. Too strong stirring can also lead to core expansion due to the action of the centrifugal force
- Width with still fluid core The advantage here is the greater pressure length that can be achieved during forging compared to rolling, which means that a greater degree of compaction of the core area can be achieved.Disadvantageous is the obvious limitation of the method to large cross-sections, since a forging unit is positioned in the area of the Continuous casting is not possible
- the object of the present invention is then to find a method and an apparatus for producing round balls with a diameter between 90 and 300 mm, which, if used appropriately, have the disadvantage
- the solidifying round dome is descaled on its surface after emerging from the mold and before entering the subsequent rolling unit and the surface layer near the surface is pre-cooled to an optimum temperature for the respective steel before the round dome is at least at first three successive horizontal stitches and finally in a vertical stitch, the surface of the pre-shaped stick being descaled again before the last stitch
- the round dome solidifies in the horizontal outlet area of the production system at a location whose position is adjustable in the axial direction of the strand relative to the location of the horizontal forming
- the diameter of the liquid core and the subsequent vertical stitch results in a material structure pre-deformed for subsequent forming process steps in an outer ring layer with a thickness of 2 half the radius with the core area almost completely compressed
- the casting speed and / or the location of the location at which the vertical stitch takes place are controlled so that the bottom of the solidifying round dome in the
- the area between the third horizontal stitch and the vertical stitch is maintained and complete solidification to the core is guaranteed at the latest when the vertical stitch is carried out
- a device for carrying out the method according to the invention is characterized in that between the vertical round casting system and its horizontal outlet there is still one in the curved part of the guide frame P ⁇ marentzu matterssstrom and a multi-frame rolling unit with at least three consecutive horizontal frames are arranged and follow the horizontal frames in the horizontal part of the strand guide with respect to the position of the sump tip in the strand movement direction back and forth vertical frame with flanged secondary descaling device
- the round knobs are descaled in the area of the sump tip at the end of the continuous casting arch, the surface layer near the surface is pre-cooled to a temperature that is optimal for the respective steel. Then a reshaping is carried out first in the at least three successive horizontal stitches and the final vertical stitch, the surface of the pre-deformed stick Descaling before the last stitch.
- the reshaping in the horizontal and vertical direction creates the desired pre-deformed material structure with an almost completely compressed core area, which is favorable for the subsequent forming process stages
- the number of horizontal scaffolds results from the diameter of the round dome, the casting speed and the realizable increase in the degree of deformation in the horizontal passages.
- the solidification of the core area can be adjusted by selecting the distance from the last fixed horizontal scaffold
- the last of the horizontal scaffolds can be designed to be adjustable under load in order to provide the correct preliminary profile for the subsequent vertical circular stitch in conjunction with a downstream measuring device for measuring the height and width of the preformed billet in the sense of an automatic roll gap control should be done so that the deformation is distributed as evenly as possible over the dome circumference while minimizing the tensile stresses on the surface, the compressive stress on the
- Knuppel scholar is said to increase with the number of stitches and at the same time prevent spreading increased and the roundness and dimensional accuracy of the billet can be guaranteed after exiting the roller unit
- the nozzles of the P ⁇ marentzu matterssein ⁇ chtung arranged in a ring around the round dome are supplied with water or a water-air mixture, the distance of the nozzles from the surface of the round dome and pressure and intensity of the medium hitting the surface of the round dome being adjustable
- the secondary descaling device consisting of at least one nozzle is flanged to the vertical frame and can be moved with it.
- the nozzles distributed around the circumference of the pre-deformed billet can be pressurized with compressed air, the distance of the nozzles from the surface of the pre-deformed billet and their distance from ring to ring and are optimized among themselves around the circumference of the ring
- pores are closed depending on the steel quality, voids in their cross-sectional area are reduced by approx. 15-35% compared to the case without pre-deformation, concentration differences in the form of segregations,
- the pre-deformation also improves the surface quality of the round billets and reduces the risk of slipping in a subsequent cross-rolling process.
- the pre-deformed material structure enables a higher level in comparison to the continuous casting structure in subsequent deformation devices
- FIG. 1 An exemplary embodiment of the production plant according to the invention for the production of deformed round casting is shown in the drawing and is described below With 1 is the vertical continuous casting system with a horizontal outlet, in the mold of which a round dome with a diameter of between 90 and 300 mm is poured and pulled downwards.
- the round dome 2 is deflected in the arch structure of the system from the vertical to the horizontal direction and Treated in the manner according to the invention
- the round dome which is still liquid on the inside, is descaled in a plasma descaling device and simultaneously cooled in order to create the surface conditions for the subsequent rolling deformation of the round dome.
- the deformation takes place in a multi-step rolling unit 4, consisting of three successive horizontal roll stands 5, each with false round calibration from two merging radii
- the last of the three horizontal roll stands can be adjusted under load and is equipped with a roll gap control which corresponds to the measuring device 8 for the height and width of the round billet
- the bottom of the liquid core ends just behind the last of the horizontal rolling stands 5 of the rolling unit 4.
- the round dome 2 is finally rolled in the vertical stand 6 after a secondary descaling at 7.
- This vertical stand 6 can be moved in the direction of the arrow in order to adapt the location of its deformation to the position of the sump tip of the round dome 2 in such a way that the deformation always takes place in the solidified area of the round dome 2
- the vertical framework 6 can be shifted in the casting direction or in the opposite direction, or the casting speed is changed accordingly, possibly in addition to the shifting of the vertical framework 6
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Continuous Casting (AREA)
- Forging (AREA)
- Fish Paste Products (AREA)
Description
Claims
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 true EP1144144A1 (de) | 2001-10-17 |
EP1144144B1 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) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105363867A (zh) * | 2015-09-25 | 2016-03-02 | 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 |
Families Citing this family (13)
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 |
WO2014203937A1 (ja) * | 2013-06-20 | 2014-12-24 | 新日鐵住金株式会社 | 鋳片の連続鋳造方法 |
CN103894572B (zh) * | 2014-04-10 | 2016-09-07 | 北京科技大学 | 一种连铸坯预处理方法 |
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*** |
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 |
CA2202616C (en) * | 1994-10-20 | 2001-01-23 | Fritz-Peter Pleschiutschnigg | Process and device for producing a steel strip with the properties of a cold-rolled product |
-
1998
- 1998-12-22 DE DE19860570A patent/DE19860570C1/de not_active Expired - Fee Related
-
1999
- 1999-12-07 KR KR1020017007992A patent/KR100658647B1/ko not_active IP Right Cessation
- 1999-12-07 ES ES99964428T patent/ES2176042T3/es not_active Expired - Lifetime
- 1999-12-07 WO PCT/DE1999/003959 patent/WO2000037200A1/de active IP Right Grant
- 1999-12-07 US US09/868,807 patent/US6491771B1/en not_active Expired - Fee Related
- 1999-12-07 AU AU30312/00A patent/AU3031200A/en not_active Abandoned
- 1999-12-07 BR BR9916414-0A patent/BR9916414A/pt not_active IP Right Cessation
- 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 AT AT99964428T patent/ATE219977T1/de 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 EP EP99964428A patent/EP1144144B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO0037200A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105363867A (zh) * | 2015-09-25 | 2016-03-02 | 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 |
Also Published As
Publication number | Publication date |
---|---|
DE19860570C1 (de) | 2000-10-05 |
BR9916414A (pt) | 2001-09-18 |
ATE219977T1 (de) | 2002-07-15 |
CA2356609C (en) | 2008-03-25 |
ES2176042T3 (es) | 2002-11-16 |
CN1170646C (zh) | 2004-10-13 |
KR100658647B1 (ko) | 2006-12-15 |
JP4430828B2 (ja) | 2010-03-10 |
WO2000037200A1 (de) | 2000-06-29 |
US6491771B1 (en) | 2002-12-10 |
EP1144144B1 (de) | 2002-07-03 |
DE59901981D1 (de) | 2002-08-08 |
AU3031200A (en) | 2000-07-12 |
CN1331616A (zh) | 2002-01-16 |
JP2002532259A (ja) | 2002-10-02 |
CA2356609A1 (en) | 2000-06-29 |
KR20010089679A (ko) | 2001-10-08 |
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