WO1997043065A1 - Stranggiessanlage für knüppel - Google Patents
Stranggiessanlage für knüppel Download PDFInfo
- Publication number
- WO1997043065A1 WO1997043065A1 PCT/DE1997/000818 DE9700818W WO9743065A1 WO 1997043065 A1 WO1997043065 A1 WO 1997043065A1 DE 9700818 W DE9700818 W DE 9700818W WO 9743065 A1 WO9743065 A1 WO 9743065A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mold
- cross
- melt
- continuous casting
- sectional area
- 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
- B22D11/12—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
- B22D11/10—Supplying or treating molten metal
- B22D11/108—Feeding additives, powders, or the like
Definitions
- the invention relates to a continuous casting plant for billets, in particular made of steel, with a melt supply vessel from which the melt is fed to a stationary mold, and the mold downstream of the mold, which rolls the strand until it is solidified by supporting means deforming the strand reducing its cross-sectional area in such a way that the strand is deformed into a polyginal cross-sectional shape with a minimum of four corners while essentially maintaining its circumferential length.
- Billet systems are usually poured into the mold via a nozzle in the distributor with a free-flowing pouring jet. Oil is used to lubricate the strand
- a continuous casting mold of conventional design that is, a nozzle with a free-falling pouring jet and oil as a lubricant.
- a device for casting with pouring tubes on a continuous casting plant for steel is known, at least one outlet opening of a pouring tube opening below a bath level covered with slag, the pouring tube being surrounded by a refractory ring for protection against erosion.
- Continuous casting plants for the production of billets and blocks from continuously cast steel products are also known, with dimensions whose cross-sectional areas of the mold inlets are of a size in which normal immersion spouts can be used.
- the invention has set itself the goal of using simple constructive means
- the inlet cross section of the mold it is proposed to design the inlet cross section of the mold to be round, oval to polygonal and to carry out the essential deformation of the billet only by the rollers arranged downstream of the mold in the casting direction.
- Round molds are used, an increase in cross-section and diameter of 127% is achieved.
- a dip tube is inserted into this mold inlet, which has the size range for a given cross-sectional area, and protrudes into the melt in such a way that its outer contour is arranged equidistant from the inner surface of the mold.
- pouring with a submerged nozzle and pouring powder in billet systems leads to a uniform and greatly reduced heat transfer. This gentle cooling leads to the formation of a strand shell, with the following advantages:
- the hotter strand shell nestles particularly well against the mold inner wall.
- the strand shell itself can absorb better expansions without tearing.
- the shrinkage and thus the strand shell load is significantly lower.
- the mold's skin temperature is low and the mold's service life is longer. If, for example, a round mold with a diameter of 102 mm is used, this cross-sectional area has the same circumference as the square format of a billet with a square of 80 mm.
- the relatively large diameter of 102 mm makes it possible to use a dip tube with a uniform distance from the mold wall of 20 mm over the entire circumference of 360 degrees in the mold level.
- a dip tube can have a wall thickness of 20 mm with the inside diameter required for the casting performance. Due to this high wall thickness, a casting time of 8 to 10 hours can be achieved with sufficient slag formation in the mold level, which is responsible for the formation of the slag film and thus the reduced and uniform heat flow in the mold.
- the round format allows casting with a high level of reliability, even at high casting speeds of up to 12 m / min, with the following consequences:
- the inconsistency of the casting speed which is otherwise caused by the change in the distributor nozzle during casting, e.g. by clogging or erosion of the nozzle opening with the consequences of the undesired reduction or increase in the casting speed.
- Continuous casting machine cast billets less to internal cracks, but also not to surface cracks, preferably longitudinal cracks and to depression as well as strand shell distortions, e.g. B. Spike edge.
- aluminum-calmed steel can also be cast.
- Figure 1 A mold with a one-piece immersion nozzle
- Figure 2 A mold with a two-part immersion nozzle and one
- FIG. 1 shows a perforated brick from the melt supply vessel 10, into which a
- a one-piece dip tube 31 is introduced.
- the mouth of the dip tube 31 dips into a mold 41 filled with melt M.
- the mold 41 has cooling channels 43.
- Deformation elements 71 are provided below the mold, here in the form of pressure rollers (71 to 74), the fourth pressure roller not being shown in the present case. With these at least four deformation elements (the pressure rollers
- the strand becomes a shape with a larger specific surface
- FIG. 2 shows a melt supply vessel 10 with a perforated brick, in which a
- Inlet pipe 12 is provided, which penetrates a sheet metal jacket 13.
- an upper holding plate 14 can be attached in a form-fitting manner, which can be connected to a lower holding plate 15 via holding screws.
- the lower holding plate 15 encompasses a collar 32 of a two-part dip tube 35.
- the immersion tube 35 projects into a mold 41 filled with metal M.
- the inlet of the inlet pipe 12 can be closed by a plug closure 21. / DE97 / 00818
- a powder container 57 which is filled with powder P, which can be fed through a lock 58 onto the surface of the liquid metal M located in the mold 41.
- the powder is fed to a trough 53 which has a ring gear which meshes with a gear 55 which is driven by a motor 56.
- the groove 53 encompassing the immersion tube 30 has a trunk 52 arranged in the bottom of the groove 53, which protrudes up to closely above the powder P floating on the metal M.
- the rotary movement of the motor 56 which influences the angular position of the nozzle 52 within the mold and the amount of powder P, which is caused by the lock drive 59, is triggered by a measuring and regulating device 63 which communicates with the drives via control lines 64, 65 56, 59 are connected.
- Control device 63 is connected via a measuring line 62 to a thermocouple 61 arranged on the mold 41.
- the strand shell E is formed between the strand shell E and the mold inner wall
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE59705778T DE59705778D1 (de) | 1996-05-10 | 1997-04-21 | Stranggiessanlage für knüppel |
AU30874/97A AU3087497A (en) | 1996-05-10 | 1997-04-21 | Continuous casting plant for billets |
EP97925824A EP0906163B1 (de) | 1996-05-10 | 1997-04-21 | Stranggiessanlage für knüppel |
AT97925824T ATE210520T1 (de) | 1996-05-10 | 1997-04-21 | Stranggiessanlage für knüppel |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19620306 | 1996-05-10 | ||
DE19620306.6 | 1996-05-10 | ||
DE19633620A DE19633620C2 (de) | 1996-05-10 | 1996-08-12 | Stranggießanlage für Knüppel |
DE19633620.1 | 1996-08-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997043065A1 true WO1997043065A1 (de) | 1997-11-20 |
Family
ID=26025864
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1997/000818 WO1997043065A1 (de) | 1996-05-10 | 1997-04-21 | Stranggiessanlage für knüppel |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0906163B1 (de) |
CN (1) | CN1074955C (de) |
AT (1) | ATE210520T1 (de) |
AU (1) | AU3087497A (de) |
WO (1) | WO1997043065A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104325103B (zh) * | 2014-11-25 | 2016-08-24 | 山东钢铁股份有限公司 | 一种结晶器喂钢带的保护浇注方法 |
CN105328149B (zh) * | 2015-10-29 | 2017-10-03 | 芜湖新兴铸管有限责任公司 | 保护渣自动加料装置 |
CN105665665B (zh) * | 2016-02-29 | 2017-11-07 | 沈阳有色金属加工有限公司 | 立式潜流半连续红锭铸造c18000合金工艺 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60115351A (ja) * | 1983-11-25 | 1985-06-21 | Daido Steel Co Ltd | 連続鋳造法 |
EP0389918A1 (de) * | 1989-03-30 | 1990-10-03 | Repa International Limited | Vorrichtung zum gleichmässigen Verteilen einer Abdeckmasse |
WO1992000819A1 (de) * | 1990-07-11 | 1992-01-23 | Intocast Gmbh Feuerfestprodukte Und Giesshilfsmittel | Verfahren und vorrichtung zur kontinuierlichen zugabe von giesshilfsmitteln auf den spiegel einer schmelze in einer stranggiesskokille |
EP0545510A1 (de) * | 1991-11-26 | 1993-06-09 | MANNESMANN Aktiengesellschaft | Verfahren zur Erzeugung von Langprodukten aus Stahl |
-
1997
- 1997-04-21 AU AU30874/97A patent/AU3087497A/en not_active Abandoned
- 1997-04-21 EP EP97925824A patent/EP0906163B1/de not_active Expired - Lifetime
- 1997-04-21 WO PCT/DE1997/000818 patent/WO1997043065A1/de not_active Application Discontinuation
- 1997-04-21 CN CN97194469A patent/CN1074955C/zh not_active Expired - Fee Related
- 1997-04-21 AT AT97925824T patent/ATE210520T1/de not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60115351A (ja) * | 1983-11-25 | 1985-06-21 | Daido Steel Co Ltd | 連続鋳造法 |
EP0389918A1 (de) * | 1989-03-30 | 1990-10-03 | Repa International Limited | Vorrichtung zum gleichmässigen Verteilen einer Abdeckmasse |
WO1992000819A1 (de) * | 1990-07-11 | 1992-01-23 | Intocast Gmbh Feuerfestprodukte Und Giesshilfsmittel | Verfahren und vorrichtung zur kontinuierlichen zugabe von giesshilfsmitteln auf den spiegel einer schmelze in einer stranggiesskokille |
EP0545510A1 (de) * | 1991-11-26 | 1993-06-09 | MANNESMANN Aktiengesellschaft | Verfahren zur Erzeugung von Langprodukten aus Stahl |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 009, no. 268 (M - 424) 25 October 1985 (1985-10-25) * |
Also Published As
Publication number | Publication date |
---|---|
AU3087497A (en) | 1997-12-05 |
EP0906163B1 (de) | 2001-12-12 |
ATE210520T1 (de) | 2001-12-15 |
EP0906163A1 (de) | 1999-04-07 |
CN1229374A (zh) | 1999-09-22 |
CN1074955C (zh) | 2001-11-21 |
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