EP0112540B1 - Anlage zum Führen und Wechseln von Tauchlanzen - Google Patents

Anlage zum Führen und Wechseln von Tauchlanzen Download PDF

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Publication number
EP0112540B1
EP0112540B1 EP83112674A EP83112674A EP0112540B1 EP 0112540 B1 EP0112540 B1 EP 0112540B1 EP 83112674 A EP83112674 A EP 83112674A EP 83112674 A EP83112674 A EP 83112674A EP 0112540 B1 EP0112540 B1 EP 0112540B1
Authority
EP
European Patent Office
Prior art keywords
lance
installation
accordance
gas supply
pins
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.)
Expired
Application number
EP83112674A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0112540A1 (de
Inventor
Pierre Mailliet
Radimir Andonov
Hubert Stomp
Jean Monai
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.)
Paul Wurth SA
Original Assignee
Paul Wurth SA
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
Priority claimed from LU84543A external-priority patent/LU84543A1/de
Priority claimed from LU84884A external-priority patent/LU84884A1/de
Application filed by Paul Wurth SA filed Critical Paul Wurth SA
Priority to AT83112674T priority Critical patent/ATE22704T1/de
Publication of EP0112540A1 publication Critical patent/EP0112540A1/de
Application granted granted Critical
Publication of EP0112540B1 publication Critical patent/EP0112540B1/de
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/05—Refining by treating with gases, e.g. gas flushing also refining by means of a material generating gas in situ
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4606—Lances or injectors
    • C21C5/4613—Refractory coated lances; Immersion lances
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4606—Lances or injectors
    • C21C5/462—Means for handling, e.g. adjusting, changing, coupling
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/0037—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 by injecting powdered material

Definitions

  • the invention relates to a system for guiding and changing diving lances, in particular diving lances, which are intended to be immersed in a molten metal, with a storage system for holding new and used lances, a holding device with a gas supply head and a device for transferring the lances between the storage system and the holding device or vice versa.
  • the object of the invention to propose a guiding and changing system for diving lances, in which the possible lance changing rhythm is high, the lances are kept particularly rigid and firm during the blowing-in process and no movable feed lines to the coupling mechanism are necessary for coupling the lances to the gas supply head.
  • the overall system shown in FIG. 1 mainly includes a lance storage case 30, a lance transport carriage 34, which carries out the shuttle transport of used or new lances between the case 30 and the actual exchange system 31.
  • the storage container 30 consists of a carousel rotating about a vertical axis, as is already known from EP-A-0 056 942. Such a quiver, after which it is filled with used lances is replaced by one with a new lance.
  • FIG. 1 an empty quiver suspension 48 is shown.
  • the associated lance 32 hangs on the lance transport carriage 34.
  • the carriage 34 which can be moved along the rails 46, 46 ', becomes the position shown in FIG. 2 opposite the exchange system 31 method.
  • the lance transport carriage 34 is suspended from the rails 46, 46 'formed from an H-beam by means of rollers.
  • the exchange system essentially consists of a vertical double carriage 42 which can be rotated about a vertical axis 0 and on which a plurality of lance carriages are suspended in a vertically movable manner.
  • FIG. 2 shows two identical lance carriages 38 and 40 which are suspended opposite each other on the double carriage 42.
  • the two lance carriages 38, 40 consist of two horizontal arms 80, 82 and 80 ', 82' (see also FIG. 1) and a lance suspension 36, 36 '.
  • the two lance carriages 38, 40 can be moved up and down along the carriage 42 by means of two chain drives 106, 108 and pneumatic motors 110, 112. Instead of providing two lance carriages, it is also possible to hang four cross-shaped lance carriages on the carriage.
  • the compressed air for the pneumatic motors 110, 112 is preferably supplied via rotary connections 114 at the top of the mount 42, which can be pivoted about the vertical axis 0.
  • the rotary movement of the mount 42 in order to interchange the position of the two lances 32, 32 'can also be done by a Pneumatic motor 116 can be initiated or by means of pneumatic tandem drives as described in more detail below.
  • the lances 32 are transferred between the lance transport carriage 34 and the lance suspension 36, or the quiver suspension 48 and vice versa, by means of a lance transfer mechanism 44 according to the invention, which is subsequently described in more detail with reference to FIGS. 3 to 5.
  • a lance transfer mechanism 44 according to the invention, which is subsequently described in more detail with reference to FIGS. 3 to 5.
  • the take-up of a new lance from a quiver suspension 48 by means of the lance transmission mechanism 44 is shown in three phases.
  • the lances 32 hang in the fork-shaped quiver suspension 48 by means of cross-shaped support pins 72.
  • the lance transmission mechanism 44 essentially consists of a fork-shaped pivot lever 50 with two aligned detents 52 for receiving the support pins 72.
  • the pivot lever 50 is attached to the lance transport carriage 34 via two pivotable suspension points 54, 60.
  • the first suspension point 54 is located on a suspension bracket 58 which can be pivoted about a fixed point 56 of the carriage 34.
  • the second suspension point 60 is located on the extremity of a pivot arm 62 whose axis of rotation 64 is the drive axis for the pivoting movement of the lever 50.
  • the pivot arm 62 can be rotated between two stops 66, 68 about the axis 64, the pivot lever 50 performing a combined rotation and translation on account of this kinematic design of the suspension and the lever end being movable along the dash-dotted curve 70.
  • the advantage of this drive is that when the swivel lever is empty and brought into the position according to FIG.
  • the transport carriage 34 is shifted into the position according to FIG. 2 with respect to the lance car 38 for the purpose of delivering the lance 32.
  • the delivery process to the suspension 36 takes place in a manner similar to the recording shown in FIGS opposite direction is driven.
  • the lance carriage 38 is then lifted with the lance 32 suspended therein from the chain-dotted position in FIG. 6 into the extended position via the chain drive 106. In this position, the connection is made to the feed 102 (see also FIG. 2) of the treatment substance which is to be blown into the molten metal by the immersion lance 32.
  • This feed 102 preferably consists of an articulated line composed of rigid pipes 104 by means of articulated connections, which can be connected to the lance via a connecting piece 103 and a gas supply head 74.
  • the gas supply head 74 which is shown in vertical section in FIG. 7, is known per se from EP-A-0 056 942 and is also described in detail in this application. According to the present invention, however, this gas supply head 74 is designed in such a way that it can either be hermetically connected to the lance 32 via a stationary drive together with the connecting piece 104 and can be moved up and down (FIG. 10) or on a stationary frame 105 above the lance carriage 38 is attached ( Figure 2).
  • two vertical lance carriage pins 76, 78 (76 ', 78') (see FIG. 2) according to FIG. 1 are arranged offset from one another on the arms 80, 82 (or 80 ', 82').
  • On the frame 105 there are two vertical, stationary pins 86, 88 which are arranged diagonally opposite the pins 76, 78.
  • the gas supply head 74 in turn has four vertical cutouts 76a, 78a, 86a, and 88a (see FIG. 8) which are arranged such that they are penetrated by the corresponding lance carriage pins 76, 78 and the fixed pins 86, 88 in the position according to FIG. 6.
  • Each of the four pins 76, 78, 86, 88 has a rectangular cut 84 with which the gas supply head 74 can optionally be locked with the fixed pins 86, 88 or the lance carriage pins 76, 78.
  • This locking of the gas supply head 74 on one pair of pins 76, 78 or on the other pair of pins 86, 88 takes place, as can be seen from FIG. 8, with the aid of a sliding bolt 90 according to the principle of a bayonet connection.
  • This slide 90 which essentially consists of two parallel legs 90a, 90b which can be moved horizontally at the level of the incisions 84 of the pins through the gas supply head 74, has recesses 73 and edges 75 on both legs 90a, 90b. As can be seen from FIG.
  • these cutouts 73 and edges 75 are arranged such that, depending on the position of the slide 90, they either block two diagonally opposite pins by means of the edges 75 in the incisions 84 or release them by means of the cutouts 73.
  • the stationary pins 86, 88 are free, while the pins 76, 78 are connected to the gas supply head 74 via the bolt 90.
  • the latch 90 is actuated by a stationary pneumatic cylinder 94, the plunger 98 of which engages between the legs 90a, 90b of the slide 90 in the gas supply head 74 without hindering the vertical movements of the gas supply head 74.
  • FIG. 9 shows another embodiment of a bayonet connection between the gas supply head denoted by 74 'and the pins 76, 78 or the pins 86, 88.
  • the connection is made via a rotatable slide 92 which also has recesses 73' and edges 75 ' is, depending on the angular position of the slide 92, the interaction of the recesses 73 'and edges 75' on the one hand and the incisions 84 on the pins 76, 78, 86, 88 on the other hand the latter either freed or locked in the gas supply head 74 '.
  • the slide 92 is actuated by a stationary but pivotally mounted pneumatic cylinder 96 with a transfer ram 100 which rotates the slide 92 in the direction of the arrow, but does not hinder the vertical movements of the gas supply head 74 '.
  • the lance 32 together with the gas supply head 74 and connecting piece can be opened 104 lowered ( Figure 10) and the lance immersed in the metal bath, not shown.
  • the carriage 38 and the lance 32 suspended therein are lowered by the chain hoists 106, 108.
  • a seal 107 in the gas supply head 74 ensures the required hermetic connection between the connecting piece 104 and the dome-shaped upper end of the lance 32.
  • the articulated connections of the rigid pipelines 104 enable the line 102 to be continuously connected to the lance 32.
  • the advantage is that the flexible cables which have hitherto been hanging around are always a danger represented, remain spared.
  • Another advantage is that the coupling of the lance 32 to the feed line 102 takes place fully automatically and also via a fixed drive 94 or 96.
  • FIGS. 11 and 12 show a first possible method for exchanging a worn lance 32 for a new lance 32 '.
  • the lance 32 is removed with the aid of the lance transport carriage 34 and fed to the quiver 30 (FIG. 1).
  • the new lance 32 ' now comes into the former position of the lance 32, that is to say in the operating position for its connection to the gas supply head 74 and immersion in the molten steel.
  • the lance transport carriage 34 now brings a new lance from the lance holder 30 and hangs it between two blowing processes of the lance 32 ′ into the empty lance holder 36, which is briefly pivoted in front of the carriage 34 for this purpose.
  • a second favorable possibility of changing the lance is to not provide the gas supply head 74 with respect to the double carriage 42 on the same side as the lance transport carriage 34, but on the opposite side, that is to say in FIG. 11 above the lance 32 '.
  • the lance 32 ' is then ready to work.
  • the lance change is then even easier because the double carriage 42 does not have to be swiveled briefly in front of the carriage to hang a new lance in the lance holder 36.
  • the double mount 42 can be pivoted about the vertical axis 0 by a pneumatic motor 116 and a gear 118.
  • FIGS. 13 to 16 show a particularly advantageous embodiment according to which the drive is carried out by two pneumatic cylinders which work on the tandem principle, each cylinder causing a rotation of exactly 90 °.
  • a first cylinder 150 is connected via its piston rod to a swivel lever 154 which is rigidly wedged with an axis of rotation of the double mount 42 at 1 58.
  • a second pneumatic cylinder 152 is arranged parallel to the first cylinder 1 50 and is pivotally connected to the fixed frame 105 with its piston rod.
  • the two cylinders 150 and 152 are connected to one another via a T-shaped bracket 156.
  • the central bar of this bracket 156 is also rotatably supported by a roller bearing 160 on a central sleeve 162 which is rigidly connected to the pivot lever 154 (see FIG. 16).
  • both the bracket 156 and the swivel lever 154 are designed in duplicate and the cylinders 150, 152 are located on both sides.
  • FIGS. 13 to 15 The mode of operation is clearly illustrated by FIGS. 13 to 15.
  • the piston rod penetrates the cylinder 152, it is pivoted 90 ° about its pivot point on the frame 105.
  • the second cylinder is entrained by the bracket 156 during this movement, but this cylinder 150 remains inoperative, that is to say that its piston rod remains extended.
  • the piston rod rotates the pivot lever 154 into the position shown in FIG. 14 and causes the double mount 42 to rotate through 90 °.
  • An additional rotation of 90 ° results from the fact that the piston rod of the cylinder 1 50 is retracted starting from the position in FIG. 14, the positions of the cylinder 1 52 and the bracket 156 remaining unchanged (see FIG. 15).
  • the sequence is reversed, that is to say that the cylinder 1 50 is actuated first and then the cylinder 152.
  • FIGS. 17, 18 and 19 show different possibilities for driving the pivoting lever 50 of the lance transport carriage 34.
  • the fact that the lever 50 is actuated only in the two end positions of the carriage 34 is used.
  • Drive motors 120, 124 with gears 122, 126 are therefore provided at each end position, which in these end positions are automatically coupled to the shaft 64 of the swivel lever mechanism.
  • a motor 132 with a gear 134 is mounted directly on the carriage 34. Energy is therefore supplied to this motor 132 through flexible lines 136.
  • the drive for moving the carriage 34 preferably consists of a combination of a pneumatic motor 140 / chain hoist 142.
  • FIG. 20 shows an inclined carriage roadway 138, which, depending on the need, runs inclined to one side or the other if the level between the quiver 30 and the suspensions 36 on the lance carriages 38, 40 is different.
  • the carriage 34 is designed such that the drive shaft 64 for the double pivoting lever 50 lies horizontally.
  • FIG. 21 shows an embodiment of a quiver 170 which is suspended from a frame 172 and can be rotated about its longitudinal axis relative to the frame 172 by means of bearings 174.
  • the rotation of the quiver in order to bring the desired lance 32 or an empty holder 48 relative to the carriage 34 can take place, for example, via an electrically driven gear wheel 78 and a ring gear 176 (see FIG. 22).
  • This ring gear 176 forms the upper part of a rotatably mounted sleeve 180, in which the quiver is suspended.
  • This suspension is carried out simply by two opposite pins 182 of the quiver which are carried by corresponding inner support tabs 184 of the sleeve 180.
  • the sleeve 180 can of course also be rotated instead of rotating the sleeve 170 as shown in FIG. 22, the sleeve itself no longer having to be rotated.
  • the quiver 170 has the advantage of taking up less space, particularly in terms of height, since it only has to be lifted out of the carrying tabs 184, whereas the quiver 30 has to be lifted from a higher vertical support column.
  • FIG. 23 schematically shows a simplified system.
  • the actual exchange system 31 with the rotating mount 42 remains unchanged.
  • This system 31 is supplied with lances via a transmission device 200 which is suspended from a pair of rails 202 by means of rollers (see also the schematic plan view of FIG. 25) and which can be moved back and forth between the system 31 and a hook 204.
  • the transmission device 200 has a plurality of hooks 206, arranged in a star shape in the present example 4, for receiving supporting lances.
  • This hook ring is rotatable about the vertical central axis of symmetry.
  • the transfer of a lance between the device 200 and the lance carriage 38, or vice versa takes place in that the device 200 is shifted into the left end position according to FIG. 23 and the carriage 38 is raised or lowered.
  • the hook 204 hangs on a cable 208 and is rolled up or down via a cable winch 210.
  • This hook 204 conveys the new and worn lances between the position shown in Figure 23 and a floor below.
  • the transfer of the lances between the transmission device 200 and the hook 204 takes place in that the device 200 is shifted to the right and the hook 204 is raised or lowered in accordance with the arrows.
  • FIGS. 24 and 26 show a system in which the storage container 230 is located in the immediate vicinity of the exchange system 31.
  • the transmission device 232 can be stationary in comparison to the system of FIG. 1, where the transmission device is moved back and forth over rails.
  • the transmission device 232 is rotatable about its longitudinal axis, which is indicated by the arrow 236.
  • the actual transfer of the lances 32 takes place by means of a pivot lever 234, the mode of operation of which is the same as that of the pivot lever 50 of the system according to FIG. 1.
  • the angle of rotation of the transmission device 232 depends on the position of the quiver 230. If, for example, the quiver 230 is in the extended position in FIG.
  • the device 232 only has to be pivoted through 90 ° in order to transmit the lances between the system 31 and the quiver 230 and vice versa. However, if the quiver 230 is in the dash-dotted position, the transmission device 232 must be pivotable through 180 °.
  • FIGS. 27 and 28 show for the first time a ladle 240 in which the lances 32 are immersed.
  • the immersion and changing system 231 according to FIGS. 27 and 28 is mounted on a pair of rails 244 by means of running wheels and can be moved between the two positions shown in FIG. This displacement of the system 231 is possible without disconnecting the supply line 102, although the connection 242 of this line 102 to the supply of treatment substance is stationary. The movement is made possible by the articulated connections between the tube pieces.
  • FIG. 27 shows how the line is moved between the extended position 102 and the dash-dotted position 102 'when the lance 32 is immersed and pulled out.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
EP83112674A 1982-12-21 1983-12-16 Anlage zum Führen und Wechseln von Tauchlanzen Expired EP0112540B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83112674T ATE22704T1 (de) 1982-12-21 1983-12-16 Anlage zum fuehren und wechseln von tauchlanzen.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
LU84543A LU84543A1 (de) 1982-12-21 1982-12-21 Wechselanlage fuer tauchlanzen
LU84543 1982-12-21
LU84884A LU84884A1 (de) 1983-06-29 1983-06-29 Anlage zum fuehren und wechseln von tauchlanzen
LU84884 1983-06-29

Publications (2)

Publication Number Publication Date
EP0112540A1 EP0112540A1 (de) 1984-07-04
EP0112540B1 true EP0112540B1 (de) 1986-10-08

Family

ID=26640296

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83112674A Expired EP0112540B1 (de) 1982-12-21 1983-12-16 Anlage zum Führen und Wechseln von Tauchlanzen

Country Status (7)

Country Link
US (1) US4533125A (es)
EP (1) EP0112540B1 (es)
BR (1) BR8307175A (es)
CA (1) CA1207145A (es)
DE (1) DE3366709D1 (es)
ES (1) ES528215A0 (es)
IN (1) IN159870B (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3828928A1 (de) * 1987-09-07 1989-03-23 Wurth Paul Sa Automatische lanzenwechselvorrichtung

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT383832B (de) * 1985-11-21 1987-08-25 Voest Alpine Ag Pfannenstand zum behandeln schmelzfluessigen metalles
DE3543836A1 (de) * 1985-12-12 1987-06-19 Clemens Karl Heinz Zwillingsblaslanzenanlage fuer metallurgische behandlungen mit integrierter messlanzenanlage
LU87387A1 (de) * 1988-11-16 1990-06-12 Wurth Paul Sa Automatische lanzenwechselvorrichtung
LU87897A1 (de) * 1991-03-01 1992-11-16 Wurth Paul Sa Antrieb fuer automatische lanzenwechselvorrichtungen
LU88017A1 (de) * 1991-10-14 1993-05-17 Wurth Paul Sa Antrieb fuer automatische lanzenwechselvorrichtungen
GB0112879D0 (en) * 2001-05-26 2001-07-18 Monocon Internat Refractories Taphole closures
KR100851876B1 (ko) * 2002-05-29 2008-08-13 주식회사 포스코 레이들의 탑렌스 투입장치
TWI373529B (en) * 2004-07-27 2012-10-01 Tech Resources Pty Ltd Smelting apparatus
CN101160499B (zh) * 2005-03-02 2010-09-29 技术资源有限公司 喷枪的取出
DE102012016045B3 (de) * 2012-08-08 2013-10-24 Saarstahl Ag Verfahren zum Betrieb einer Aufblaslanzenanordnung, sowie Aufblaslanzenanordnung selbst
CN108531678B (zh) * 2018-07-06 2023-06-20 鞍钢股份有限公司 一种铁水旋转喷吹复合脱硫用喷枪安装方法
CN113046509A (zh) * 2021-03-16 2021-06-29 攀钢集团攀枝花钢铁研究院有限公司 一种铁水脱硫旋转搅拌喷吹设备
CN118492905A (zh) * 2024-07-19 2024-08-16 江苏尚纯自动化技术有限公司 自动换枪装置

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Publication number Priority date Publication date Assignee Title
US2472416A (en) * 1944-08-28 1949-06-07 Robert M Gibson Blowing tube for molten metal
US3480267A (en) * 1967-05-16 1969-11-25 Koppers Co Inc Horizontally movable platform having a vertically movable carriage for oxygen steelmaking operations
DE2454776B2 (de) * 1974-11-15 1976-09-02 Mannesmann AG, 4000 Düsseldorf Anlage zum einbringen von behandlungsmitteln in metallschmelzen
DE2502977C2 (de) * 1975-01-23 1977-03-31 Mannesmann Ag Blaslanzenkupplung sowie blaslanze
CA1071862A (en) * 1976-09-25 1980-02-19 Kousaku Higuchi Lance supporting and gyrating device in a steel-refining converter
SE7614042L (sv) * 1976-12-14 1978-06-15 Kockums Construction Ab Lansmanoveranordning
DE2738291A1 (de) * 1977-08-25 1979-03-08 Krupp Gmbh Einrichtung zum zufuehren von stoffen mittels einer oder mehrerer lanzen in elektrooefen
LU83089A1 (de) * 1981-01-26 1981-06-04 Wurth Anciens Ets Paul Vorrichtung und halterung zum wechseln von tauchlanzen
NL8104325A (nl) * 1981-09-21 1983-04-18 Estel Hoogovens Bv Inrichting voor het geleiden van een sublans.
DE3142433A1 (de) * 1981-10-26 1983-05-05 Dango & Dienenthal Maschinenbau GmbH, 5900 Siegen Vorrichtung zum manipulieren von tauchlanzen fuer metallurgische oefen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3828928A1 (de) * 1987-09-07 1989-03-23 Wurth Paul Sa Automatische lanzenwechselvorrichtung

Also Published As

Publication number Publication date
EP0112540A1 (de) 1984-07-04
CA1207145A (en) 1986-07-08
ES8500102A1 (es) 1984-11-01
IN159870B (es) 1987-06-13
ES528215A0 (es) 1984-11-01
DE3366709D1 (en) 1986-11-13
BR8307175A (pt) 1984-08-07
US4533125A (en) 1985-08-06

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