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EP0423579A1 - Dispositif de nettoyage des syphons de chargement et de déchargement par coulée d'un four - Google Patents

Dispositif de nettoyage des syphons de chargement et de déchargement par coulée d'un four Download PDF

Info

Publication number
EP0423579A1
EP0423579A1 EP90119231A EP90119231A EP0423579A1 EP 0423579 A1 EP0423579 A1 EP 0423579A1 EP 90119231 A EP90119231 A EP 90119231A EP 90119231 A EP90119231 A EP 90119231A EP 0423579 A1 EP0423579 A1 EP 0423579A1
Authority
EP
European Patent Office
Prior art keywords
cleaning tool
pouring
siphon
cleaning
drive
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
Application number
EP90119231A
Other languages
German (de)
English (en)
Other versions
EP0423579B1 (fr
Inventor
Horst Gillhaus
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.)
ABB AG Germany
ABB AB
Original Assignee
Asea Brown Boveri AG Germany
Asea Brown Boveri AB
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 Asea Brown Boveri AG Germany, Asea Brown Boveri AB filed Critical Asea Brown Boveri AG Germany
Publication of EP0423579A1 publication Critical patent/EP0423579A1/fr
Application granted granted Critical
Publication of EP0423579B1 publication Critical patent/EP0423579B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D25/00—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag
    • F27D25/001—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag comprising breaking tools, e.g. hammers, drills, scrapers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/15—Tapping equipment; Equipment for removing or retaining slag
    • F27D3/1509—Tapping equipment
    • F27D3/1527—Taphole forming equipment, e.g. boring machines, piercing tools
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B14/00—Crucible or pot furnaces
    • F27B14/06—Crucible or pot furnaces heated electrically, e.g. induction crucible furnaces with or without any other source of heat
    • F27B14/061—Induction furnaces
    • F27B14/065—Channel type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D2003/0034—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities
    • F27D2003/0054—Means to move molten metal, e.g. electromagnetic pump
    • F27D2003/0056—Means to move molten metal, e.g. electromagnetic pump through a syphon in a vacuum chamber, e.g. involving aspiration or pressure on the bath

Definitions

  • the invention relates to a device for cleaning the pouring and pouring siphon of a furnace suitable for holding liquid metal from slag mixtures.
  • Such an oven in which the liquid metal is poured in or out via siphons, is known, for example, from BBC publication no. DIA 124684 D, special print from BBC gamingen, volume 66, issue 7/1984, pages 258 to 262.
  • slag approaches in particular storage furnaces and die-casting furnaces, the problem arises that siphons, in particular pouring siphons, are narrowed in their cross section by slag approaches, so that, for example, the filling and / or pouring speed in storage furnaces must be greatly reduced.
  • the filling speed must be reduced to avoid overflows (swallowing capacity is reduced).
  • the pouring speed is automatically reduced by the constrictions. This can be the case with die casting furnaces additionally the pressure control can be disturbed.
  • slag approaches can cause considerable safety problems due to liquid metal squeezed out like a fountain.
  • the cause of the slag deposits in the siphon can be, on the one hand, that the melt is not carefully purged before it is poured into the furnace, that the melt contains slag-forming elements such as S, CaO, Mg, and that the melt contains fine, floating slag particles or that the melt comes into increased contact with oxygen when it is poured into the furnace.
  • the frequently changing bath level in the siphons creates changing areas of attack by slag, oxygen and melt during partial heating and cooling.
  • the invention has for its object to provide a device for cleaning the pouring and pouring siphon of a furnace, with which a thorough removal of the slag approaches is made possible in a short amount of time.
  • a device for cleaning with a frame which can be connected to the pouring and pouring siphon of a furnace suitable for holding liquid metal, the frame serving to guide a driven cleaning tool penetrating into the siphon channel and via a flange plate with the flanges of the Pouring or pouring siphons is connected.
  • the advantages that can be achieved with the invention are, in particular, that the proposed, workplace-friendly device for cleaning removes the slag batches in a way that saves time and material. No additional oxygen gets into the melt during the cleaning process. In addition, the work with the proposed device does not suffer from excessive temperature and smoke.
  • Fig. 1 the basic structure of a die casting furnace is shown.
  • a die casting furnace 1 with a centrally arranged boiler 2, a pouring siphon 3, a pouring siphon 4 and a cover 5 for closing the boiler 2 can be seen.
  • Boiler 2, pouring siphon 3, pouring siphon 4 and cover 5 are lined with ceramic walls. Both the pouring siphon 3 and pouring siphon 4 can be divided approximately in half and are connected to one another via flanges 6.
  • the level of the liquid iron 7 entering the boiler 2 through the pouring siphon 3 is regulated with compressed gas (see arrows) to a uniform level in accordance with the respective contents of the boiler 2.
  • the channel inductor 8 additionally heats the liquid iron 7.
  • contact pins 10 are provided in the pouring siphon 4.
  • a stopper 11 At the outlet of the pouring siphon 4 there is a stopper 11 with stopper actuation and pouring nozzle.
  • the stroke of the plug 11 determines the amount Liquid iron 7 for the funnel, the casting mold 12 located below the pouring device of the pouring siphon 4.
  • the die casting furnace 1 rests on a base frame with longitudinal and transverse running gear 9.
  • the task is to free the pouring siphon 3 and pouring siphon 4 from slag approaches.
  • the siphons 3, 4 are opened via their flanges 6 and a cleaning device (described in detail in FIG. 11) can clean the opened siphon channels.
  • Suitable cleaning tools such as plungers, chisels or drills of the cleaning device engage in the siphon channels and loosen the slag deposits.
  • plungers 2 to 4 different embodiments of plungers are shown.
  • 2 shows a hollow cylindrical siphon channel 13 delimited by a ceramic wall 14, on the walls of which slag deposits 17 have become attached.
  • a cylindrical plunger 16 is used as the cleaning tool, which is actuated by the cleaning device via a cleaning rod 15 with a square cross section, i.e. for example in the sense of a rotary hammer is moved forward in translation.
  • the diameter of the plunger 16 is preferably somewhat smaller than the inner diameter of the siphon channel 13. In the case of a strong slag approach, however, a plunger which has only a diameter of half the clear width of the siphon channel can expediently be pushed in a first operation. In a second operation, cleaning is then carried out with the aid of a plunger with a diameter that is adapted to the clear width of the siphon channel.
  • the plunger shown in FIG. 3 consists of three disks 18, each with the same diameter, spacer disks 19 of smaller diameter being provided between two disks 18. With the aid of a plunger designed in this way, part of the slag that has been repelled can advantageously be transported out of the siphon channel.
  • FIG. 4 shows a plunger which has at least two disks 20 with a graduated diameter as a cleaning tool, as a result of which a “plunger tip” is formed.
  • 5 and 6 different embodiments of chisels are shown.
  • 5 shows an asymmetrical chisel 21 with a lateral tip.
  • This chisel 21 is also driven by the cleaning device, preferably in the sense of a rotary hammer - possibly additionally rotating.
  • a chisel 22 with two lateral tips is shown in FIG. 6, which enables a more uniform machining of the siphon channel 13.
  • FIG. 7 shows a drill 23 with two cutting edges offset by 180 ° each
  • FIG. 8 a drill 24 with three cutting edges each offset by 120 ° is used.
  • the drill 25 shown in FIG. 9 has a single cutting edge that extends over the entire diameter of the drill and has its own “pre-drill tip”. This drill 25 can be used in particular if a siphon channel 13 is to be cleaned, which is already completely clogged with slag.
  • FIG. 10 shows a drill 26 with two cutting edges, which has a spiral 27 for transporting the slag out of the siphon channel 13.
  • the spiral 27 can, for example, be “wound” around the cleaning rod 15.
  • Heat-resistant steel or ceramic can be used as materials for the plunger, chisel and drill, and the heat-resistant steel can also be water-cooled as desired.
  • FIG. 11 shows a cleaning device for siphons.
  • a pot-shaped frame 28 with a flange plate 29 attached to the edge of the jacket can be seen.
  • the frame 28 engages coaxially over the sprue siphon 3 open on the flange, the flange plate 29 and flange 6 being connected to one another.
  • generally known connecting elements can also be provided.
  • an insulating mat 30 is expediently inserted for thermal insulation.
  • the flange plate 29 has a central opening with a diameter corresponding to the clear width of the siphon channel 13, so that a cleaning tool (plunger, chisel or drill - in the exemplary embodiment a chisel 22) from the frame 28 through the opening of the flange plate 29 into the siphon channel 13 can come across.
  • a cleaning tool plunger, chisel or drill - in the exemplary embodiment a chisel 22
  • the cleaning tool is connected via the cleaning rod 15 to an integrated drive device, in the exemplary embodiment to a bolt of a hydraulic cylinder 31, the bolt reaching through a central opening in the base of the frame 28.
  • the bolt of the hydraulic cylinder 31 is moved with the aid of a hydraulic station 32, ie it can be a translationally uniform movement, a translatory movement in the Perform mitage (alternating forward and backward) or a translational movement with impulses in the sense of a rotary hammer.
  • the bolt of the hydraulic cylinder can perform a pulling movement for returning the cleaning tool from the siphon channel 13.
  • a drive motor for a hydraulic pump 33 and solenoid valves 34 are indicated schematically as units of the hydraulic station 32.
  • a disk 35 with a central square opening is arranged near the opening of the frame 28 on the flange plate side.
  • the disk 35 is supported by a bearing ring 36 which is fixedly connected to the inner casing of the frame 28.
  • the cleaning rod 15 engages through the central square opening of the disk 35.
  • a sleeve 37 is firmly connected to the disk 35.
  • the sleeve 37 carries a ring gear 38, in which a ring gear 39 of a motor-gear unit 40 engages.
  • the motor-gear unit 40 is firmly connected to the inner jacket of the frame.
  • the cleaning rod 15 can be driven with cleaning tools via the disk 35, the ring gear 38 and the gear 39 from the motor-gear unit 40 in both directions of rotation, which is important when using chisels and drills as cleaning tools.
  • the drive for a chisel or drill can be translationally rotating or translationally rotating in the vocational step or translationally rotating with impulses.
  • a cooling water connection of the cleaning rod 15 is indicated, with the aid of which the cleaning tool can be cooled during operation.
  • a hydraulic cylinder 42 is anchored between an articulated plate 43 which is firmly connected to the outer casing of the frame 28 and an anchored to the floor or base frame 9 Carrier 44 arranged.
  • the hydraulic cylinder 42 represents an integrated lifting device for tilting the die casting furnace 1, namely the die casting furnace 1 is tilted to such an extent that the entry of the siphon channel 13 into the boiler 2 is free of liquid iron 7. This ensures that the cleaning tool can advance to the bottom of the siphon channel 13.
  • the die casting furnace 1 is expediently not tilted empty in order to prevent disadvantageous free access of oxygen through the pouring siphon 4. Tilting the furnace empty would result in increased slag formation due to the oxygen supply.
  • an empty tilting of the furnace is associated with disadvantages for the channel inductor 8 and time and energy losses.
  • the temperature changes in the inductor ceramic that occur when tipping empty can lead to cracks that do not close again later (ie when the melt is refilled).
  • slag residues that have a higher melting point than the liquid metal cannot fly into the channel channel and cannot melt and interrupt the electrical circuit for the inductor coil.
  • parts of the slag can reduce the service life of the inductor as a result of the channel growing.
  • the cleaning tool can generally be driven not only hydraulically, but also pneumatically or electrically, e.g. the units hydraulic cylinder 31 / hydraulic station 32 / drive motor for hydraulic pump 33 / solenoid valves 34 are replaced by units such as pneumatic cylinder / pneumatic station or electric motor / reduction gear / hammer mechanism.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Furnace Charging Or Discharging (AREA)
EP90119231A 1989-10-14 1990-10-06 Dispositif de nettoyage des syphons de chargement et de déchargement par coulée d'un four Expired - Lifetime EP0423579B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3934354A DE3934354A1 (de) 1989-10-14 1989-10-14 Vorrichtung zur reinigung des einguss- und ausgusssiphons eines ofens
DE3934354 1989-10-14

Publications (2)

Publication Number Publication Date
EP0423579A1 true EP0423579A1 (fr) 1991-04-24
EP0423579B1 EP0423579B1 (fr) 1993-12-22

Family

ID=6391485

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90119231A Expired - Lifetime EP0423579B1 (fr) 1989-10-14 1990-10-06 Dispositif de nettoyage des syphons de chargement et de déchargement par coulée d'un four

Country Status (3)

Country Link
EP (1) EP0423579B1 (fr)
DE (2) DE3934354A1 (fr)
ES (1) ES2049385T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4438900C1 (de) * 1994-08-26 1996-06-13 Comesi S A I C Verfahren zum Entfernen von Trassablagerungen
WO2007136889A1 (fr) * 2006-05-24 2007-11-29 Diamond Power International, Inc. Appareil pour nettoyer une goulotte de coulée d'un dispositif de combustion
WO2008044984A1 (fr) * 2006-10-13 2008-04-17 Teknik Support M. Bertilsson Ab Appareil et procédé pour le nettoyage

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109000485A (zh) * 2018-08-01 2018-12-14 河南三松节能环保科技有限公司 一种高温加热炉清渣系统

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3833334A (en) * 1973-07-05 1974-09-03 Combustion Eng Apparatus for relining a bof vessel tap hole
DE8901643U1 (de) * 1989-02-14 1989-03-23 Willi Wader GmbH, 5608 Radevormwald Bohrstange zum Stichlochbohren an Hochöfen

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE948061C (de) * 1954-03-05 1956-08-30 Bamag Koeln Bayenthal Zweignie Geraet zur Beseitigung von Konverterbaeren
AT298089B (de) * 1970-05-08 1972-04-25 Vmw Ranshofen Berndorf Ag Werkzeug zum Reinigen von Rinneninduktionsöfen
DE2723547C2 (de) * 1977-05-25 1983-10-20 Otto Junker Gmbh, 5107 Simmerath Vorrichtung zum Entfernen der Schlackenansätze sowie infiltrierten inneren Randschichten an Schmelz- oder Gießgefäßen
DE3225015C1 (de) * 1982-07-03 1983-11-17 Stahlwerke Peine-Salzgitter Ag, 3150 Peine Vorrichtung zum Reinigen von feuerfest ausgekleideten Förderrinnen für schmelzflüssige Metalle und Schlacken mittels rotierender Ketten

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3833334A (en) * 1973-07-05 1974-09-03 Combustion Eng Apparatus for relining a bof vessel tap hole
DE8901643U1 (de) * 1989-02-14 1989-03-23 Willi Wader GmbH, 5608 Radevormwald Bohrstange zum Stichlochbohren an Hochöfen

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4438900C1 (de) * 1994-08-26 1996-06-13 Comesi S A I C Verfahren zum Entfernen von Trassablagerungen
WO2007136889A1 (fr) * 2006-05-24 2007-11-29 Diamond Power International, Inc. Appareil pour nettoyer une goulotte de coulée d'un dispositif de combustion
CN101484633B (zh) * 2006-05-24 2013-03-27 钻石能量国际公司 用于清洗燃烧装置的熔融物溜槽的设备
WO2008044984A1 (fr) * 2006-10-13 2008-04-17 Teknik Support M. Bertilsson Ab Appareil et procédé pour le nettoyage

Also Published As

Publication number Publication date
DE3934354A1 (de) 1991-04-18
DE59003962D1 (de) 1994-02-03
EP0423579B1 (fr) 1993-12-22
ES2049385T3 (es) 1994-04-16

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