WO2008087002A1 - Verfahren und vorrichtung zum vergiessen von ne-metallschmelzen, insbesondere kupfer oder kupferlegierungen - Google Patents
Verfahren und vorrichtung zum vergiessen von ne-metallschmelzen, insbesondere kupfer oder kupferlegierungen Download PDFInfo
- Publication number
- WO2008087002A1 WO2008087002A1 PCT/EP2008/000247 EP2008000247W WO2008087002A1 WO 2008087002 A1 WO2008087002 A1 WO 2008087002A1 EP 2008000247 W EP2008000247 W EP 2008000247W WO 2008087002 A1 WO2008087002 A1 WO 2008087002A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- melt
- casting
- channel
- bath
- pouring tube
- Prior art date
Links
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
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0637—Accessories therefor
- B22D11/064—Accessories therefor for supplying molten metal
- B22D11/0642—Nozzles
Definitions
- the invention relates to a.
- the invention relates to a device suitable for carrying out the method.
- the melt located in the tundish is introduced by means of a pouring tube or several pouring tubes into the melt bath, the pool, the revolving cast strip mold.
- the pouring tube may be arranged vertically or at a defined angle, inclined to the horizontal.
- the casting pipes should ensure a uniform and low-turbulence distribution of the melt in the strip casting mold. Furthermore, it should be prevented by the immersion of the casting tubes into the pool and the outlet of the melt below the bath surface, that the melt flow can come into contact with atmospheric oxygen.
- a sufficient fill level in the tundish ensures that the pouring tube is completely filled with melt.
- the flow rate of the melt is influenced by the metallostatic pressure of the melt in the tundish, depending on the pouring angle of the pouring tube.
- a dip tube for casting molten metal which has a funnel-shaped expanding swirling chamber for reducing the kinetic energy of the melt at the dipping tube outlet.
- the calmed melt reaches the pool via side outlet openings.
- the dip tube is arranged vertically and has at the transition from the pipe section to Verwirbelungshunt a spoiler edge.
- EP 0 194 327 A1 discloses a double-belt continuous casting mold with a device for regulating the position of the casting mirror.
- the tundish is connected via a right angle bent intermediate tube with the pouring tube. This consists of a horizontally extending portion and an upwardly bent portion which opens into the mold, wherein the outlet opening is not immersed in the pool.
- the melt stream is diverted several times until it enters the mold, due to the siphon-like arrangement of tundish, intermediate pipe and pouring pipe.
- EP 1 506 827 A1 a casting system for a thin-slab mold with a tunable dish and a submersible pouring tube is known, wherein the dip tube, which tapers in the flow direction, is arranged obliquely downwards.
- the outlet opening of the dip tube is located below the bath level of the mold.
- the outflow opening is covered by a lip and arranged so that the melt is deflected several times and distributed transversely to the longitudinal axis of the mold.
- EP 0 962 271 A1 discloses a radial flow distributor for uniform, non-turbulent and non-dripping pouring of molten metal into a continuous metal casting machine.
- the manifold consists of a channel or channel with a sole to form a sump and a downstream concave weir having a slot-shaped opening or overflow edge.
- the gutter is followed by a fan-shaped apron whose top is at the same level height as the overflow edge.
- the skirt is arranged horizontally or slightly rising (2 °) and has projecting side walls.
- the outlet end of the skirt is formed as a ramp, which is inclined at an angle of about 15 ° downwards. Apron and ramp form an open spout.
- the lower end of the ramp is above the casting belt or the bath level of the mold or casting device.
- the melt passes exclusively by gravity and with a free surface in the mold.
- the disadvantage is that the molten metal falls over the entire width of the ramp in the melt bath of the casting apparatus. At the outlet of the melt, this constricts laterally and in the mold or casting device large-scale vortices are induced. This can be flushed gas bubbles or impurities and there are flow patterns in the band, which adversely affect the quality of the final product.
- the invention has for its object to provide a method for casting non-ferrous metal melts, especially copper or copper alloys, for the production of flat products with a thickness of at least 20 mm, which ensures an improved introduction of the melt in the pool and the Flushing of gas bubbles or impurities in the melt of the mold largely prevented. Furthermore, a device suitable for carrying out the method is to be provided.
- the melt flows with a free surface from the tundish to the bath level of the mold continuously in a defined casting angle of up to 15 ° obliquely downward, along the drainage element with constant or decreasing speed and is without further influencing the flow rate under passed the surface of the pool of the mold.
- turbulences are prevented by a cover surrounding the upper side of the drainage element from spreading in an area within the mold. Due to the free surface of the melt, there is a free space through which gaseous constituents forming during the course of the flow escape.
- a limitation of the amount flowing through the drainage element takes place exclusively at the inlet of the drainage element by the predetermined level height in the tundish.
- the liquid molten metal in the distribution vessel is maintained at a level such that the drainage element, in particular when it is formed as a tube, is only partially filled with melt.
- the melt flows freely over the edge of the tundish into the drainage element.
- the level in the tundish is monitored continuously.
- the flow rate of the effluent from the tundish melt is determined essentially by gravity and is therefore low. If necessary, the flow velocity of the melt along the drainage element can still be reduced by a rough surface and / or mechanical elements.
- the drainage element can also be designed so that the melt flow widens in width.
- the drainage element is arranged at an inclination angle to the horizontal of up to a maximum of 15 °. Since the drainage element is only partially filled with melt, it flows at a comparatively low velocity into the mold. Due to the dipping into the melt bath of the mold end, open-ended portion of the drainage element, which is surrounded by a jacket-shaped cover or boundary, the inflowing melt passes within this section on the standing in this section melt.
- Turbulence caused by the melt inflow occurs within the portion surrounded by the jacket-shaped cover.
- the melt passes as a calm flow under the surface of the pool of the mold. On the pool surface outside of said section, therefore, there is no formation of waves and vortices. Consequently, no impurities or gas bubbles are flushed into the melt. Due to the free space above the surface of the incoming melt stream gases released during the cooling of the melt can flow out or escape unhindered.
- the drainage elements according to the invention are only partially filled with melt, they can, if at all, bend evenly only at the bottom. By lowering the tundish this can be compensated again.
- a device suitable for carrying out the method can be equipped either with a tubular or upwardly open drainage element, a gutter.
- Pouring pipe or gutter are arranged in a defined casting angle, sloping downwards, and immerse in the melt bath of a circulating belt casting mold.
- a suitable pouring tube has at its plunging end a central outlet opening or an eccentrically downwardly directed outlet opening.
- the cross-sectional area of the outlet opening is at least as large as the cross-sectional area of the pouring tube.
- the immersing portion of the pouring tube has at least on its upper side a cover which limits the outlet opening.
- a channel has in the region of the entry of the melt into the Kokillenbad a cover to form a peripherally closed portion, as a shell-shaped boundary of the central outlet opening.
- the cover of the channel extends over a length of 40 to 250 mm, starting from the outlet end of the channel.
- the covering section thus projects beyond the bath level of the mold by approximately 20 to 100 mm.
- the jacket-shaped cover may for example also be designed as an attachable cover.
- the cross-sectional shape of the channel can be designed differently, preferably, the channel has a semicircular, semi-oval or rectangular cross-sectional shape.
- the dipping portion of the pouring tube is formed so that the outlet opening is bounded on the circumference by the tube wall forming the cover. This ensures that the free-flowing melt with a free surface within the submerged portion of the pouring tube meets the surface of the melt in the mold.
- the pouring tube above the immersed portion approximately above 20 to 100 mm above the bath level may have a partially or fully open top or have one or more openings at the top. These can easily escape within the submerged section forming vapors and gases.
- Pouring pipe or channel can also be designed so that widens their cross section in the flow direction in width. Thereby, a further reduction of the flow rate of the melt flow can be achieved.
- casting tubes or gutters can be arranged next to one another over the bandwidth to be cast.
- the melt contacting surfaces of the pouring tube or channel are preferably roughened or provided with mechanical elements, e.g. in the form of arranged transversely to the flow direction weirs provided. By means of these measures, the flow velocity of the melt can be further reduced.
- pouring pipe or gutter are equipped with a wall heater.
- the drainage element may be formed in its geometric shape as a spout.
- the exchanging portion of a pouring spout must have a cover in a manner analogous to that of a gutter.
- the dipping portion of the spout has a width that is approximately equal to the bandwidth.
- a monitoring device may be provided.
- the proposed solution is particularly suitable for the continuous production of copper strips, with a width of 800 to 1500 mm and a thickness of 20 to 50 mm.
- FIG. 1 shows a first embodiment of the device according to the invention in a simplified perspective view
- Fig. 2 is a channel shown in Fig. 1 in an enlarged view in cross-section, Fig. 3 designed as a spout groove Fig. 4, the pouring spout of FIG. 3 as a side view and
- Fig. 5 shows a second embodiment of the device according to the invention in a simplified perspective view as a side view.
- Fig. 1 an apparatus for continuous casting of strips by means of a circulating belt mold is shown.
- the device consists of a tundish or distribution vessel 1, which is filled with liquid molten metal up to the level height H.
- the level height H is indicated in Fig. 1 by a dashed line.
- four trough-like drainage elements 2 are integrated at a defined angle of inclination of, for example, 9 °, which dip into the melt bath (pool) 4 of the broadband mold 3.
- the broadband mold 3 consists of an upper and a lower circumferential casting belt 5, which are guided over deflection rollers, of which for reasons of clarity in Figure 1, only the lower casting belt 5 is shown with the front guide roller 6.
- the liquid molten metal present in the tundish or distribution vessel 1 is conducted by means of the outflow elements 2 between the casting belts, into the melt pool or pool 4 of the mold 3, and held between the cooled casting belts. During the further transport of the casting belts moving at casting speed, the melt solidifies to form the desired flat product.
- the casting belts are tensioned during the casting process by means of the deflection rollers.
- the Kokillenraum is limited at both its longitudinal sides by side walls not shown in detail, by which the width of the belt to be cast is determined.
- the mold 3 is arranged at an angle of, for example, 9 ° to the horizontal inclined.
- the melt located between the casting belts 5 is moved in the withdrawal direction and solidified by cooling.
- the level or bath level in the mold 3 is identified by the reference numeral 7.
- the withdrawal or belt speed of the casting belts 5 is dependent on the thickness of the belt to be cast.
- the feeding of the melt from the tundish 1 into the mold 3 takes place in the example shown in FIG. 1 via four identically designed trough-like drainage elements 2. These have a closed upper section 8 at their point of integration into the tundish 1.
- the individual troughs 2 have a rectangular cross section and expand in width in the flow direction.
- the lower, immersed in the Kokillenbad 4 section 9 of the channel 2 is provided with a jacket-shaped cover 10.
- the cover 10 projects beyond the bath level 7 by approximately 20 to 100 mm. Between the lower portion 9 and the upper portion 8, the channel 2 is open on its upper side (free space 11).
- the cover 10 may already be part of the channel or placed and secured after production of the channel.
- the cross-sectional shape of the channel may be different, with the rectangular shape has been found to be advantageous.
- a channel 2 is shown as a single part.
- the channel 2 has a bottom 12 and two narrow side walls 13 and an outlet opening 25.
- To reduce the flow speed of the melt flow are their inner sides roughened.
- mechanical elements in the form of transversely extending weirs 14 are arranged to further reduce the flow rate.
- FIGS. 3 and 4 a groove designed as a pouring spout 15 is shown.
- This has a width which corresponds to the width of the belt to be cast.
- the spout is inserted in an opening provided at the front of the tundish and inclined at an angle to the horizontal, analogous to the grooves previously described.
- the spout 15 has a bottom 16 and two side walls 17.
- the front, immersed in the pool of the mold section 18 is provided with a cover 19 which dips into the pool of the mold.
- the pouring spout is arranged so that the upper edge 20 of the cover projects beyond the bath level of the mold by 20 to 100 mm.
- the length of the cover 19 corresponds approximately to 1/3 of the length of the casting spout.
- transverse weirs 14 are arranged on the bottom 16, as can be seen in particular in FIG. 4.
- a second embodiment is shown, in which the drainage element is designed as a pouring tube 2 '.
- the pouring tube 2 ' is integrated into the tundish 1 at the same angle of inclination as the channel 2.
- the mold 3 is analogous to that shown in FIG. 1.
- Fig. 5 are still the upper casting belt 5 'and the associated front pulley 6' can be seen.
- the pouring tube 2 ' has at the end of the immersed into the pool 4 section 18 an outlet opening 25.
- the melt is at the same height as the bath level 7. It is essential that the pouring tube 2' is only partially filled in the operating state.
- Above the outflowing melt stream in the pouring tube 2 ' is a free space 21 extending up to the tundish 1.
- the inlet opening 24 of the pouring tube 2 ' is integrated at the connection point to the distribution vessel 1 in this, that the filling height H in the distribution vessel 1 at a level between the central axis X and above the lower edge of the inlet opening 24 of the pouring tube 2' is located.
- the level height H in the tundish 1 is kept constant at a level such that the melt flows off almost without pressure and a free space 21 remains in the pouring tube 2 'along the flow path to the top.
- the inflowing melt 22 enters the mold bath as a shallow and steady flow at a relatively low flow rate.
- the flow rate is essentially influenced by the viscosity of the melt and the inclination of the pouring tube 2 'or the channel 2 and the roughness of the inner wall. By additional internals, such as in the transverse direction weirs 14, the flow rate can be further reduced. Turbulences on the bath surface which occur during the inflow of the melt 22 can propagate only within the peripherally closed section 18 of the pouring tube 2 'and not over the entire liquid bath level in terms of surface area. In an analogous way This also applies when using a channel, since the submerged portion 9 of the channel 2 is surrounded by a cover 10, 19.
- the pouring tube 2 ' is still equipped with a wall heater 23 in the lower section.
- the fill level in the tundish 1 is monitored, wherein melt is continuously supplied to the extent that melt flows out via the drainage elements 2, 2 'into the mold.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2008800025482A CN101616762B (zh) | 2007-01-20 | 2008-01-15 | 用于浇注特别是铜或铜合金的非铁金属熔池液的方法和装置 |
EP08701107.8A EP2111313B1 (de) | 2007-01-20 | 2008-01-15 | Verfahren und vorrichtung zum vergiessen von ne-metallschmelzen, insbesondere kupfer oder kupferlegierungen |
US12/523,738 US8151866B2 (en) | 2007-01-20 | 2008-01-15 | Method and apparatus for casting NF metal baths, particularly copper or copper alloys |
CA002674134A CA2674134A1 (en) | 2007-01-20 | 2008-01-15 | Method and apparatus for casting nf metal baths, particularly copper or copper alloys |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07001253.9 | 2007-01-20 | ||
EP07001253A EP1946866A1 (de) | 2007-01-20 | 2007-01-20 | Verfahren und Vorrichtung zum Vergiessen von NE-Metallschmelzen, insbesondere Kupfer oder Kupferlegierungen |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008087002A1 true WO2008087002A1 (de) | 2008-07-24 |
Family
ID=38255771
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2008/000247 WO2008087002A1 (de) | 2007-01-20 | 2008-01-15 | Verfahren und vorrichtung zum vergiessen von ne-metallschmelzen, insbesondere kupfer oder kupferlegierungen |
Country Status (9)
Country | Link |
---|---|
US (1) | US8151866B2 (de) |
EP (2) | EP1946866A1 (de) |
CN (1) | CN101616762B (de) |
CA (1) | CA2674134A1 (de) |
CL (1) | CL2008000167A1 (de) |
PE (1) | PE20081330A1 (de) |
RU (1) | RU2450890C2 (de) |
UA (1) | UA94793C2 (de) |
WO (1) | WO2008087002A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011047858A1 (de) | 2009-10-21 | 2011-04-28 | Sms Siemag Ag | Verfahren und vorrichtung zur seitlichen strömungsführung einer metallschmelze beim bandgiessen |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010033018A1 (de) * | 2010-07-31 | 2012-02-02 | Sms Siemag Aktiengesellschaft | Schmelzenaufgabesystem zum Bandgießen |
CN102873289A (zh) * | 2012-10-23 | 2013-01-16 | 江苏南瑞淮胜电缆有限公司 | 铝合金连铸连轧生产线用开放式浇煲装置 |
DE102014114033A1 (de) | 2014-09-26 | 2016-03-31 | Thorsten Michel | Form |
EP3548204B1 (de) * | 2016-11-29 | 2020-04-08 | SMS Group GmbH | Giessdüse |
DE102017106456A1 (de) | 2017-03-27 | 2018-09-27 | Mkm Mansfelder Kupfer Und Messing Gmbh | Keramikrohr und Gießsystem |
CN112355280B (zh) * | 2020-10-15 | 2021-12-28 | 济宁华宇金属制品有限公司 | 一种铅皮制作用批量生产设备 |
KR20230156840A (ko) * | 2021-06-02 | 2023-11-14 | 노벨리스 인크. | 고-성능 연속 캐스팅을 위한 노즈팁 디자인 |
CN118037736B (zh) * | 2024-04-12 | 2024-06-14 | 南京师范大学 | 一种基于特征参数提取的金属增材制造熔池形态检测方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2902426A1 (de) | 1978-01-30 | 1979-08-02 | Alusuisse | Duese fuer das bandgiessen |
EP0635323A1 (de) | 1993-07-13 | 1995-01-25 | C. Edward Eckert | Düse für Stranggiessanlage |
EP0962271A1 (de) * | 1996-11-27 | 1999-12-08 | Hazelett Strip-Casting Corporation | Radialstrom-Verteiler zum gleichmässigen, nicht turbulenten und nicht tropfenden Stranggiessen von Metallen und entsprechendes Verfahren |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4593742A (en) * | 1982-04-28 | 1986-06-10 | Hazelett Strip-Casting Corporation | Apparatus for feeding and continuously casting molten metal with inert gas applied to the moving mold surfaces and to the entering metal |
EP0194327A1 (de) * | 1985-03-09 | 1986-09-17 | Fried. Krupp Gesellschaft mit beschränkter Haftung | Einrichtung zur Regelung der Lage des Giessspiegels innerhalb einer Doppelbandstranggiesskokille |
US5063990A (en) * | 1990-06-22 | 1991-11-12 | Armco Inc. | Method and apparatus for improved melt flow during continuous strip casting |
CN1038912C (zh) * | 1991-08-28 | 1998-07-01 | 上海钢铁研究所 | 双辊连铸金属薄带的方法 |
CN1240686A (zh) * | 1998-06-09 | 2000-01-12 | 阿尔卑斯电气株式会社 | 金属薄带的制造装置及其制造方法 |
DE50301315D1 (de) * | 2003-08-01 | 2006-02-16 | Hof Te Fiennes N V | Giesssystem und Verfahren zum Vergiessen von NE-Metallschmelzen |
-
2007
- 2007-01-20 EP EP07001253A patent/EP1946866A1/de not_active Withdrawn
-
2008
- 2008-01-15 UA UAA200908697A patent/UA94793C2/ru unknown
- 2008-01-15 US US12/523,738 patent/US8151866B2/en active Active
- 2008-01-15 RU RU2009131340/02A patent/RU2450890C2/ru active
- 2008-01-15 CN CN2008800025482A patent/CN101616762B/zh active Active
- 2008-01-15 CA CA002674134A patent/CA2674134A1/en not_active Abandoned
- 2008-01-15 EP EP08701107.8A patent/EP2111313B1/de active Active
- 2008-01-15 WO PCT/EP2008/000247 patent/WO2008087002A1/de active Application Filing
- 2008-01-18 PE PE2008000157A patent/PE20081330A1/es not_active Application Discontinuation
- 2008-01-18 CL CL200800167A patent/CL2008000167A1/es unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2902426A1 (de) | 1978-01-30 | 1979-08-02 | Alusuisse | Duese fuer das bandgiessen |
EP0635323A1 (de) | 1993-07-13 | 1995-01-25 | C. Edward Eckert | Düse für Stranggiessanlage |
EP0962271A1 (de) * | 1996-11-27 | 1999-12-08 | Hazelett Strip-Casting Corporation | Radialstrom-Verteiler zum gleichmässigen, nicht turbulenten und nicht tropfenden Stranggiessen von Metallen und entsprechendes Verfahren |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011047858A1 (de) | 2009-10-21 | 2011-04-28 | Sms Siemag Ag | Verfahren und vorrichtung zur seitlichen strömungsführung einer metallschmelze beim bandgiessen |
DE102009054218A1 (de) | 2009-10-21 | 2011-05-19 | Sms Siemag Ag | Verfahren und Vorrichtung zur seitlichen Strömungsführung einer Metallschmelze beim Bandgießen |
Also Published As
Publication number | Publication date |
---|---|
US20100044001A1 (en) | 2010-02-25 |
EP2111313B1 (de) | 2013-11-06 |
EP1946866A1 (de) | 2008-07-23 |
PE20081330A1 (es) | 2008-11-15 |
UA94793C2 (ru) | 2011-06-10 |
EP2111313A1 (de) | 2009-10-28 |
US8151866B2 (en) | 2012-04-10 |
CA2674134A1 (en) | 2008-07-24 |
RU2009131340A (ru) | 2011-02-27 |
CN101616762B (zh) | 2011-12-14 |
RU2450890C2 (ru) | 2012-05-20 |
CN101616762A (zh) | 2009-12-30 |
CL2008000167A1 (es) | 2008-05-30 |
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