EP1208930A1 - Fermeture coulissante pour récipients métallurgiques - Google Patents

Fermeture coulissante pour récipients métallurgiques Download PDF

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Publication number
EP1208930A1
EP1208930A1 EP01126090A EP01126090A EP1208930A1 EP 1208930 A1 EP1208930 A1 EP 1208930A1 EP 01126090 A EP01126090 A EP 01126090A EP 01126090 A EP01126090 A EP 01126090A EP 1208930 A1 EP1208930 A1 EP 1208930A1
Authority
EP
European Patent Office
Prior art keywords
preheating
slide plate
closure according
slider closure
slider
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.)
Withdrawn
Application number
EP01126090A
Other languages
German (de)
English (en)
Inventor
Dieter Dipl.-Ing. Figge
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Siemag AG
Original Assignee
SMS Demag AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SMS Demag AG filed Critical SMS Demag AG
Publication of EP1208930A1 publication Critical patent/EP1208930A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14—Closures
    • B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
    • B22D41/28—Plates therefor
    • B22D41/36—Treating the plates, e.g. lubricating, heating

Definitions

  • the invention relates to a slide closure for metallurgical vessels, ovens and. Like., With a slide plate made of heat-resistant material, which by means of a linear Drive is movable in a guide in the open position or in the closed position.
  • the invention has for its object to provide a slide closure with cheap Propose properties for short and fast or for slower preheating processes, without the slide plate suffering from disadvantages of durability.
  • the object is achieved in that the slide plate for preheating in a guide made of ceramic materials and that next the tap hole preheating surfaces are arranged alternately in preheating positions are movable in which the preheating surfaces are each heatable. Thereby can do both short and fast as well as slower, longer heating times be selected depending on the heating elements used. Moreover there is the advantage that the high temperatures of the slide plate of the guide can't hurt. The advantage is also a lifespan extension Slider plate by a factor of 10.
  • the guide made of ceramic materials as a ceramic frame is resiliently connected to a metal housing.
  • the ceramic frame leaves the slide plate in the area of the heating surface up and down free, so that heating can take place from there.
  • One is also advantageous easy guidance under the adjustable spring force.
  • a further development provides that the position of a preheating surface is at least one corresponds to partial preheating, with the tap hole in the tap position. While the tapping of the molten metal can therefore be preheated further, albeit diminished.
  • Preheating surfaces can be moved alternately in the preheating position. Thereby comes the right or the alternate for the closing function of the slide plate left preheating surface for use.
  • the vertical Housing walls of the metal housing are water-cooled.
  • an upper preheating surface and a lower preheating surface on the slide plate each have two obliquely arranged Gas burners are assigned.
  • the gas burners are attached and attached according to other characteristics in that the gas burner in a mounting surface of the metal case are arranged.
  • the inductor heater is designed in such a way that the inductor is a yoke forms with a gap and that the yoke carries the induction coil. Determined the current of the coil current the heating energy.
  • the efficiency is approx. 40%.
  • normal alumina graphite with somewhat lower efficiency can be used.
  • the electrically conductive special ceramic consists of zirconium oxide stabilized with CaO / MgO or Y 2 O 3 .
  • Slider plates made of ceramic CMC materials (Ceramic Matrix composites) with maximum thermal stability, e.g. C / C-SiC.
  • the slide plate is formed with internal carbon fibers or metal elements and a covering made of ceramic materials.
  • the slide closure for a metallurgical vessel e.g. an electric oven
  • a slide plate 1 made of heat-resistant material.
  • the slide plate 1 is by means of a linear drive 2, e.g. a hydraulic piston-cylinder unit, movable in a guide 3 in the open position or in the closed position.
  • the slide plate 1 is from the center 4 to the left or adjustable on the right.
  • the preheating surface 7 is in the preheating position 7a.
  • Tap hole 5 is closed under the unused, but preheated preheating surface 8.
  • the preheating surface 7 is in one during the melting of scrap Electric oven heated to 100% of the required temperature for approx. 50 min.
  • Fig. 1B the slide closure for tapping the liquid metal (liquid Stahls) opened for approx. 1 min. During this time, both preheating surfaces 7, 8 with approx. 50% of the heating output can be heated.
  • the preheating surface 7 is located above the tapping channel 11 and closes this with the preheated preheating surface 7.
  • the preheating surface 8 e.g. continue heating to the 100% heating temperature for about 50 minutes.
  • the initial position shown in Fig. 1A is after the described steps of 1A-1D in Fig. 1E again reached, so that there again the preheating surface 8th closes the tapping channel 11 and the preheating surface 7 in the preheating position 7a located.
  • the cycle of steps 1A-1E described can thus be run through again become.
  • the slide plate 1 is in tapping position 12, i.e. the position 1B is reached.
  • the guide 3 is made of ceramic materials 24 as a ceramic frame 9 resiliently connected to a metal housing 10.
  • the metal case 10 surrounds the slide plate 1 in the form of a clamp.
  • the ceramic frame 9 forms (see also Fig. 3) the tapping channel 11 and the slide plate 1 in the Steps 1A through 1E.
  • the preheating positions 7a and 8a can also be seen in FIG. Doing so the positions of a preheating surface 7 or 8 at least those described in Fig. 1B partial preheating, while the tap hole 5 is in tap position 12.
  • the embodiment according to FIG. 2 is provided for gas burners 13, in pairs are arranged in the preheating positions 7a, 8a.
  • the housing wall 10a of the metal housing 10 is water cooled
  • the slide plate 1 which consists of the ceramic materials 24, is by means of (Not shown in detail) provided with a linear measuring device linear drive 2 in the positions shown in Figs. 1A to 1E fixed. As in Fig. 2 is still shown, an upper preheating surface 7 or 8 and a lower Preheating surface 7 or 8 on the slide plate 1 each two obliquely arranged Associated gas burner 13 (see also Fig. 3).
  • the slide plate 1 is shown in its displacement direction 16, the Linear drive 2 the slide plate 1, as described, in exact positions 1A - 1E shifts.
  • the ceramic frame 9 is pressed against the slide plate by means of compression springs 17 1 pressed and thereby seals without hindering a guiding movement.
  • To the left and right of the tap hole 5 are the arrangements of the gas burners 13 made in mounting surfaces 18.
  • FIGS. 5, 6A and 6B A second alternative for preheating the slide 1 is in FIGS. 5, 6A and 6B, an induction heater 19 being provided for preheating.
  • an induction heater 19 For the upper and lower preheating surfaces 7, 8 is a common one on the slide plate 1 Inductor 20 arranged (Fig. 5).
  • the induction heater 19 heats in the preheating position 7a the left half of the slide plate 1.
  • the preheating surface closes 8 the tapping channel 11.
  • the induction heater 19 consists of the inductor 20, which has a yoke 21 with a Gap 22 forms, the yoke 21 carrying the induction coil 23 (FIG. 6A).
  • the slide plate 1 consists of ceramic materials 24 made by CGA ceramic or are given by normal alumina graphite. For strength reasons, the Slider plate 1 with an internal steel wire mesh (not shown) and be pressed out of a covering made of ceramic materials 24.
  • the slide plate length 1a is adjustable to the stroke 2a (FIG. 6B).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Furnace Details (AREA)
  • Furnace Charging Or Discharging (AREA)
EP01126090A 2000-11-23 2001-11-02 Fermeture coulissante pour récipients métallurgiques Withdrawn EP1208930A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2000158213 DE10058213A1 (de) 2000-11-23 2000-11-23 Schieberverschluß für metallurgische Gefäße, Öfen u.dgl.
DE10058213 2000-11-23

Publications (1)

Publication Number Publication Date
EP1208930A1 true EP1208930A1 (fr) 2002-05-29

Family

ID=7664416

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01126090A Withdrawn EP1208930A1 (fr) 2000-11-23 2001-11-02 Fermeture coulissante pour récipients métallurgiques

Country Status (2)

Country Link
EP (1) EP1208930A1 (fr)
DE (1) DE10058213A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1910707A1 (de) * 1969-03-03 1970-09-17 Herward Neitzel Vorrichtung und Verfahren zum Abgiessen von Schmelzen
GB2045737A (en) * 1979-03-15 1980-11-05 Didier Werke Ag Electrically conductive materials for heating elements and a method of making them
US4268016A (en) * 1978-06-19 1981-05-19 Didier-Werke Ag Valve element for sliding type valve joints on the outlet of vessels containing molten metal and process for making same
JPH0970649A (ja) * 1995-09-06 1997-03-18 Nippon Steel Corp 通電加熱式スライディングノズル及びその操作方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1910707A1 (de) * 1969-03-03 1970-09-17 Herward Neitzel Vorrichtung und Verfahren zum Abgiessen von Schmelzen
US4268016A (en) * 1978-06-19 1981-05-19 Didier-Werke Ag Valve element for sliding type valve joints on the outlet of vessels containing molten metal and process for making same
GB2045737A (en) * 1979-03-15 1980-11-05 Didier Werke Ag Electrically conductive materials for heating elements and a method of making them
JPH0970649A (ja) * 1995-09-06 1997-03-18 Nippon Steel Corp 通電加熱式スライディングノズル及びその操作方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 07 31 July 1997 (1997-07-31) *

Also Published As

Publication number Publication date
DE10058213A1 (de) 2002-05-29

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