EP0766608A1 - Stranggiesskokille - Google Patents
StranggiesskokilleInfo
- Publication number
- EP0766608A1 EP0766608A1 EP96909916A EP96909916A EP0766608A1 EP 0766608 A1 EP0766608 A1 EP 0766608A1 EP 96909916 A EP96909916 A EP 96909916A EP 96909916 A EP96909916 A EP 96909916A EP 0766608 A1 EP0766608 A1 EP 0766608A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- continuous casting
- casting mold
- mold
- central region
- mold according
- 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
- 238000009749 continuous casting Methods 0.000 title claims abstract description 67
- 238000005266 casting Methods 0.000 claims abstract description 25
- 230000007704 transition Effects 0.000 claims description 13
- 230000007423 decrease Effects 0.000 abstract description 2
- 230000008602 contraction Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 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
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
-
- 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
- B22D11/041—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for vertical casting
Definitions
- the invention relates to a continuous casting mold for casting a strand with a polygonal cross-section, with side walls which delimit a mold cavity with a polygonal cross-section, wherein side walls have a central region extending in the casting direction with a first conicity and laterally adjoining the central region with a lower conicity than the first Have taper.
- a continuous casting mold of this type is known from EP-A - 0 179 364.
- the edge angle between adjacent side walls of the continuous casting mold decreases in the direction of the strand, i.e. Casting direction, with the proviso that the tensile stresses caused by the shrinkage of the strand shell continuously reduce or compensate in the edge area.
- This is intended to prevent the strand shell from detaching from the cooled mold wall in the region of the corners, in order to achieve a uniform shell growth, in particular a uniformly thick shell.
- this is disadvantageous for the following reason:
- the invention aims at avoiding these disadvantages and difficulties and has as its object to create a continuous casting mold in which a uniform shell growth is ensured with only low frictional forces between the strand and the continuous casting mold.
- a lifting of the strand shell in the edge region of the strand is to take place in such a targeted manner that weak points locally adjacent to the edges no longer occur and a risk of breakthrough in these regions is substantially reduced, if not completely avoided.
- the central portion has a conicity which is greater than a conicity adapted to the strand shrinkage and in that the width of the side regions is increasingly increasing in the casting direction up to the end of the continuous casting mold.
- the central region preferably extends from the end of the continuous casting mold to at least the casting mirror region, the central region expediently being formed by a flat surface and having a constant taper over its entire length.
- a sharp increase in the frictional forces between the strand shell and the mold side walls is reliably avoided if the central region has a taper in the range between 1.5 to 2.5% / m mold length, preferably in the range between 2 to 2.5 f- / m mold length
- the side regions extend from the end of the continuous casting mold to below the casting level region, but up to the upper half of the mold, i.e. it is sufficient if the side areas only extend to where, for the first time, the strand shell is lifted off in the edge area.
- the side areas are convex in cross section, the side areas and the central area advantageously having a common tangential surface at the transition from the side areas to the central area.
- the convexly curved cross section of the side regions expediently has an increasing curvature starting from the transition to the central region to the corner region.
- a side wall of the continuous casting mold according to the invention is easy to produce if the convexly curved cross section of the side regions is formed by circular lines with two different radii which have a tangential transition.
- the taper of the side regions is preferably less than a taper adapted to the strand shrinkage.
- Adequate clearance of the edge areas of the strand is provided if the taper of the side areas in the corner areas of the mold cavity is a maximum of 1.5 to 2.0 ( 7r / m mold length, the taper of the side areas advantageously being a minimum of 0 r / m mold length.
- the transitions from the central region to the side regions each expediently start from corner regions of adjoining side surfaces of the continuous casting mold and, viewed in the casting direction, approach the center line of symmetry in an arcuate manner, the arcuate transitions advantageously increasing towards the end of the continuous casting mold Have curvature.
- FIG. 1 a view of an inside of a side wall of a continuous casting mold
- FIG. 2 a plan view of a continuous casting mold. which is formed from four of the side walls shown in FIG. 1.
- Fig. 3 illustrates a section along the line III-I1I of Fig. 1 on an enlarged scale.
- 4 and 5 each illustrate on an enlarged scale edge areas of a continuous casting mold in cross section with the strand located in the continuous casting mold, FIG. 4 showing the conditions which occur in a conventional continuous casting mold and
- FIG. 5 shows the conditions in a continuous casting mold according to the invention
- the side wall 1 of a continuous casting mold 2 shown in FIG. 1 serves to form a mold cavity 3 shown in FIG. 2, which has approximately a cross section of a billet.
- the side wall 1 has a top-to-bottom, i.e. extending from the pouring area 4 to the end 5 of the continuous casting mold 2.
- Middle section 6. which is formed symmetrically to the longitudinal center axis 7 or symmetry center line of the side wall 1.
- This central area 6 is approximately tongue-shaped, but the central area in the pouring area 4 and preferably over an area X. which is slightly more than the first quarter of the longitudinal extent 9 of the side wall 1, extends over the entire width 10 of the side wall 1.
- the area X extends over a length of 200 to 250 mm with a mold length of approximately 800 mm.
- the central region 6 has a conicity which is greater than a conicity adapted to the strand shrinkage, namely the conicity is approximately 2 to 2.5 c / ml of mold length 9.
- the central region 6 is designed to be flat and the conicity of the central region 6 is over the entire length Length 9 of the side wall 1 kept constant.
- the side areas 11 are, as can be seen in particular from FIG. 3, convex to the mold cavity 3 and connect tangentially to the central area 6 at the transition 12. so that there is no kink in the side wall 1 at the transition 12.
- the convex curvature of the side regions 11 increases towards the corner regions 13 of the mold cavity 3, i.e. has an increasing curvature.
- this increasing curvature - when considering the cross-section of the side wall 1 - is realized by circular arcs with different radii R 1 and R 1 which adjoin one another, an area with a very large radius R 1 adjoining the central area 6 and an area to this area with a smaller radius R_.
- the taper of the side areas 1 1 is less than the taper of the central area. It is expediently less than a taper adapted to the strand shrinkage; it is advantageously between a minimum of 0 f7 m mold length and 1.5% / m mold length.
- the taper of the central area is 2.5 c / r / m mold length
- the central region 6 of the side wall 1 can have a higher conicity over the region X of the mold, over which it extends over the entire width 10 of the side wall 1, than over its remaining longitudinal region.
- the exaggerated taper of the central region 6 causes the strand shell 15 to rest securely.
- the shell 15 of the strand is membrane-like, especially in the central region, and it can therefore easily adapt to the excessive conicity present in the central region 6 of the side walls 1.
- the strand shell 15 is brought into contact with the side walls 1 of the continuous casting mold 2 precisely in the areas in which the weak point zones 16 are formed, specifically on the side areas 11 of the side walls 1, but without a contact pressure between them directly in the corner areas 13 Continuous casting mold 2 and continuous shell 15 to cause.
- the lower taper of the side regions 11 in combination with the exaggerated taper of the central regions 6 brings about reliable support in this transition region, which is at risk when casting with conventional molds, and thereby good contact and thus heat transfer by heat conduction.
- the continuous casting mold according to the invention is largely insensitive to a change in the casting parameters. It ensures uniform shell growth and allows the edge regions 19 of the strand to be released, in which no shell weak points nevertheless occur. This minimizes the frictional forces between the strand shell 15 and the side walls I of the continuous casting mold 2 and thus also the shell load on the strand. In addition, this also results in very little mold wear.
- edge regions 1 have a lower or no taper at all.
- the strand shell 15 thus has a degree of freedom in these edge regions I from the contour B, so to speak, and does not allow high pressure peaks to arise, so that the pulling forces for pulling the strand out of the continuous casting mold are not increased are.
- the invention is not limited to the exemplary embodiment shown in the drawing, but can be modified in various respects.
- the continuous casting mold 2 can be designed both as a tubular mold and as a plate mold. Their use is not limited to vertical casting.
- the mold cavity can also have a curved central axis.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Confectionery (AREA)
Description
Claims
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT66395 | 1995-04-18 | ||
AT663/95 | 1995-04-18 | ||
AT0066395A AT404235B (de) | 1995-04-18 | 1995-04-18 | Stranggiesskokille |
PCT/AT1996/000072 WO1996033034A1 (de) | 1995-04-18 | 1996-04-15 | Stranggiesskokille |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0766608A1 true EP0766608A1 (de) | 1997-04-09 |
EP0766608B1 EP0766608B1 (de) | 1999-11-03 |
Family
ID=3496540
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96909916A Expired - Lifetime EP0766608B1 (de) | 1995-04-18 | 1996-04-15 | Stranggiesskokille |
Country Status (7)
Country | Link |
---|---|
US (1) | US5799719A (de) |
EP (1) | EP0766608B1 (de) |
KR (1) | KR100236317B1 (de) |
CN (1) | CN1081498C (de) |
AT (2) | AT404235B (de) |
DE (1) | DE59603553D1 (de) |
WO (1) | WO1996033034A1 (de) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2183120T3 (es) * | 1997-12-24 | 2003-03-16 | Europa Metalli Spa | Lingotera de fundicion continua. |
CH693130A5 (de) * | 1998-05-18 | 2003-03-14 | Concast Standard Ag | Kokille zum Stranggiessen von im wesentlichen polygonalen Strängen. |
AT407351B (de) * | 1998-12-23 | 2001-02-26 | Voest Alpine Ind Anlagen | Stranggiesskokille |
PT1547705E (pt) | 2003-12-27 | 2008-06-06 | Concast Ag | Processo para o vazamento contínuo de lingotes em forma de barras e blocos e cavidade de molde de uma lingoteira destinada ao vazamento contínuo |
US20090228714A1 (en) * | 2004-11-18 | 2009-09-10 | Biogy, Inc. | Secure mobile device with online vault |
DE102012207786A1 (de) | 2012-05-10 | 2013-11-14 | Sms Siemag Ag | Stranggießkokille |
DE102017130930A1 (de) * | 2017-12-21 | 2019-06-27 | Inteco Melting And Casting Technologies Gmbh | Verfahren und Vorrichtung zum Stranggießen von Metall |
KR102074364B1 (ko) * | 2018-05-14 | 2020-02-06 | 주식회사 포스코 | 주형 |
CN113399637A (zh) * | 2021-06-24 | 2021-09-17 | 重庆钢铁股份有限公司 | 一种预防q195钢方坯连铸浇注过程中裂纹漏钢的工艺 |
CN113857444A (zh) * | 2021-10-10 | 2021-12-31 | 秦皇岛瀚丰长白结晶器有限责任公司 | 一种适合生产普碳钢的高拉速结晶器 |
DE102022207234A1 (de) * | 2022-07-15 | 2024-01-18 | Sms Group Gmbh | Kupferplatte mit verbesserter Oberflächengeometrie |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3226782A (en) * | 1963-03-01 | 1966-01-04 | United States Steel Corp | Variable-taper casting mold |
JPS5027027A (de) * | 1973-07-11 | 1975-03-20 | ||
US3910342A (en) * | 1973-11-12 | 1975-10-07 | Rossi Irving | Molds for continuous casting |
US4207941A (en) * | 1975-06-16 | 1980-06-17 | Shrum Lorne R | Method of continuous casting of metal in a tapered mold and mold per se |
US4023612A (en) * | 1975-11-25 | 1977-05-17 | Inland Steel Company | Continuous casting mold and process of casting |
US4694880A (en) * | 1982-09-16 | 1987-09-22 | Gladwin Kirk M | Method of continuously casting metal slabs |
DE3427756A1 (de) * | 1984-07-24 | 1985-03-28 | Mannesmann AG, 4000 Düsseldorf | Stranggiesskokille fuer die herstellung von straengen aus stahl |
JPS6149751A (ja) * | 1984-08-17 | 1986-03-11 | Nippon Steel Corp | 連続鋳造用鋳型 |
CH664915A5 (de) * | 1984-10-26 | 1988-04-15 | Concast Service Union Ag | Durchlaufkokille zum stranggiessen von stahlstraengen mit polygonalem querschnitt. |
CH683327A5 (de) * | 1990-02-21 | 1994-02-28 | Concast Standard Ag | Vorrichtung zum Stranggiessen. |
ATE105750T1 (de) * | 1991-02-06 | 1994-06-15 | Concast Standard Ag | Kokille zum stranggiessen von metallen, insbesondere von stahl. |
US5409053A (en) * | 1991-02-06 | 1995-04-25 | Concast Standard Ag | Continuous casting mold |
DK0627968T3 (da) * | 1992-03-05 | 1996-01-08 | Concast Standard Ag | Fremgangsmåde til strengstøbning af metal, især stål i barre- og råblokform |
JP3261766B2 (ja) * | 1992-11-10 | 2002-03-04 | セイコーエプソン株式会社 | マルチプロセッサシステム、共有変数更新装置、プロセッサユニット及び共有変数更新方法 |
-
1995
- 1995-04-18 AT AT0066395A patent/AT404235B/de not_active IP Right Cessation
-
1996
- 1996-04-15 DE DE59603553T patent/DE59603553D1/de not_active Expired - Lifetime
- 1996-04-15 CN CN96190354A patent/CN1081498C/zh not_active Expired - Lifetime
- 1996-04-15 AT AT96909916T patent/ATE186245T1/de not_active IP Right Cessation
- 1996-04-15 KR KR1019960707253A patent/KR100236317B1/ko not_active IP Right Cessation
- 1996-04-15 US US08/750,632 patent/US5799719A/en not_active Expired - Lifetime
- 1996-04-15 EP EP96909916A patent/EP0766608B1/de not_active Expired - Lifetime
- 1996-04-15 WO PCT/AT1996/000072 patent/WO1996033034A1/de active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO9633034A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN1150769A (zh) | 1997-05-28 |
DE59603553D1 (de) | 1999-12-09 |
WO1996033034A1 (de) | 1996-10-24 |
EP0766608B1 (de) | 1999-11-03 |
KR100236317B1 (ko) | 1999-12-15 |
ATA66395A (de) | 1998-02-15 |
AT404235B (de) | 1998-09-25 |
KR970703827A (ko) | 1997-08-09 |
US5799719A (en) | 1998-09-01 |
CN1081498C (zh) | 2002-03-27 |
ATE186245T1 (de) | 1999-11-15 |
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