EP0164331A2 - Dispositif pour nettoyer la tête d'une lance à introduire dans un récipient métallurgique - Google Patents

Dispositif pour nettoyer la tête d'une lance à introduire dans un récipient métallurgique Download PDF

Info

Publication number
EP0164331A2
EP0164331A2 EP85890094A EP85890094A EP0164331A2 EP 0164331 A2 EP0164331 A2 EP 0164331A2 EP 85890094 A EP85890094 A EP 85890094A EP 85890094 A EP85890094 A EP 85890094A EP 0164331 A2 EP0164331 A2 EP 0164331A2
Authority
EP
European Patent Office
Prior art keywords
lance
head
cleaning
articulated
cleaning head
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
EP85890094A
Other languages
German (de)
English (en)
Other versions
EP0164331B1 (fr
EP0164331A3 (en
Inventor
Hellmuth Smejkal
Walter Rockenschaub
Johann Fohler
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.)
Primetals Technologies Austria GmbH
Original Assignee
Voestalpine 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 Voestalpine AG filed Critical Voestalpine AG
Publication of EP0164331A2 publication Critical patent/EP0164331A2/fr
Publication of EP0164331A3 publication Critical patent/EP0164331A3/de
Application granted granted Critical
Publication of EP0164331B1 publication Critical patent/EP0164331B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • C21C5/4693—Skull removal; Cleaning of the converter mouth
    • 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

Definitions

  • the invention relates to a device for cleaning a lance head of a lance which can be inserted into a metallurgical vessel, in particular a lance carrying a measuring and / or sampling probe, with a cleaning head which is in contact with the lance head during the cleaning process and surrounds the lance head, the cleaning head and the Lance are relatively movable in the direction of the axis of the lance.
  • a device of this type has the disadvantage that the rigidly arranged cleaning head is exposed to the emissions and the heat radiation from the metallurgical vessel. Furthermore, this known device is only suitable for cleaning cylinder surfaces on the lance, whereas the front end surface of the blowing lance cannot be cleaned.
  • From DE-A - 26 52 142 is a device for Ent slag a blow lance known in which a striking tool, which is arranged laterally at a short distance next to the blow lance, can be moved to the blow lance, whereby the tool comes into contact with the cylindrical surface of the lance and bears off adhering to it. Careful cleaning and restoration of the exact original lance surface is just as impossible with this known device as cleaning the end face of the blowing lance.
  • lances carrying measuring and / or sampling probes the lance head of which dips into a slag layer during the sampling or measuring process.
  • Such lances as are used, for example, to record temperature and carbon values in molten steel, work with probes which can only be used once and which point onto a contact rod protruding from the end face of the lance postponed and carried out after Measurement, that is, after immersion in the molten steel, be pulled off the contact rod again. It is inevitable that slag and metal deposits form on the outside and front of the lance. Under certain circumstances, for example in the case of poorly fitting probes, slag or metal can penetrate between the end face of the lance and the end face of the probe lying against this end face. If they are not removed, such approaches can prevent exact contact of the measuring lines between the probe and the contact rod when a new probe is pushed on, which can lead to incorrect measurements.
  • the invention aims to avoid these disadvantages and difficulties and has as its object to create a device of the type described above, with which it is possible to attach the lance head to its Carefully clean the molten bath in the side facing the metallurgical vessel.
  • This object is achieved in that the cleaning head and the lance can be brought into alignment with one another by means of an actuating device and that the cleaning head can be set into a rotary movement oscillating about the axis of the lance by means of an oscillating device.
  • the cleaning head can be brought into a position aligned with the axis of the lance by means of an actuating device from a position to the side of the metallurgical vessel (this can be done by pivoting or moving the lance by means of the actuating device or by pivoting or moving the cleaning head by means of the actuating device) , the cleaning head itself is not exposed to the emissions from the metallurgical vessel, so that no deposits can form on the cleaning head itself and an exact working of the cleaning head is ensured at all times.
  • the cleaning head is formed in at least two parts in the direction of the axis of the lance, the parts of the cleaning head being pivotable by means of a spreading device from a spreading position next to the lance head into a working position surrounding the lance head and vice versa.
  • the relative movement in the direction of the axis of the lance between the lance and the cleaning head is advantageously accomplished in that the cleaning head can be raised and lowered in the direction of the axis of the lance by means of a lifting and lowering device. This measure makes it possible to leave the lance in the rest position even during the cleaning process, and it is sufficient to raise or lower the much lighter cleaning head.
  • the cleaning head is expediently mounted on a vertical guide which is arranged on a support which is adjustable in the horizontal direction from and to the axis of the lance.
  • the cleaning head has a two-part housing in which a likewise two-part milling head is rotatably mounted, each of the two parts of the housing being articulated by means of an arm fastened to it on a support slidably mounted on the vertical guides.
  • the two parts of the milling head are expediently articulated by means of articulated rods to a double arm articulated centrally on the support, on which the oscillating device is articulated.
  • each arm is advantageously articulated via a hinge bracket at each end of a cross beam horizontally displaceable from and to the cleaning head, which cross beam can be displaced by means of the spreading device mounted on the support, the axes of the arms of the parts of the housing articulated on the support expediently If the milling head is not oscillating, align it with the axes of the articulated rods articulated on the double arm.
  • the parts of the housing on the parting joints are expediently provided with centering projections which interlock when closed in the working position.
  • the teeth of the milling head preferably form an angle with one another that is smaller than the maximum angle of the rotational oscillation movement.
  • the profile of the teeth of the milling head is advantageously adapted to the profile of the lance head, as a result of which the entire part of the lance head which is critical with regard to deposits can be cleaned with a single cleaning process.
  • FIG. 1 shows a top view of the device in a schematic representation
  • FIG. 2 shows a partially sectioned side view of the device according to the invention
  • Fig. 3 is a plan view of the device.
  • a measuring lance (also called sub-lance), which is positioned above the mouth 2 of a steelworks converter 3 imabstiid 4 next to a blowing lance 5.
  • a contact rod 7 for a measuring probe which extends in the direction of the axis 8 of the lance 1, is provided on the lance head 6 of the measuring lance 1.
  • the lance can be raised and lowered by means of a drive, not shown. During the measuring process, the lance 1 dips with the measuring probe pushed onto the contact rod 7 into the melt located in the steelwork converter 3, etc. through the slag floating on the melt, the lance head 6 often being immersed in the slag.
  • the lance head 6 has on its end face 9 an annular recess 10 into which the upper end of the measuring probe can be inserted, so that the penetration of slag or melt between the measuring probe and the contact rod 7 can generally be prevented.
  • This recess 10 and the conical end face 9 of the lance head adjoining the recess must be kept clean of slag or metal deposits in order to ensure that after the measurement, i.e. after removing a measuring probe from the contact rod 7, to be able to receive a new measuring probe without any problems, the contact between the contact points 11 located at the lower end of the contact rod and the corresponding contact points of the measuring probe being ensured.
  • a device 12 for cleaning the lance head 6 is provided, which is provided with a cleaning head 13, on the upper side of which a milling head 14 is arranged.
  • the cleaning head 13 is formed by two parts 13 ′, 13 ′′, which complement one another to form a hollow cylinder.
  • the parting joints 15 run vertically, that is to say through the axis 16 of the cleaning head 13.
  • the cleaning head 13 has a housing 17, which is likewise divided which is also divided milling head 14 by means of rollers 18 in horizontal and verti cal direction is rotatably supported.
  • Each part 17 ', 17 “of the housing 17 is each provided with a cantilever arm 19 which is pivotally attached to a support 21 by means of a vertically extending axis 20, whereby the parts 17', 17" of the housing 17 and those in them Stored parts 14 ', 14 "of the milling head 14 can be moved like pliers, e.g. from a spreading position A shown in FIG. 3 with dash-dotted lines to a closed working position B, which is shown in FIG. 3 with full lines.
  • the support 21 is supported by means of two vertical guides 22 on a support 23 in the direction of the axis 16 of the cleaning head 13 so that it can be raised and lowered.
  • a pressure medium cylinder 24, which is articulated on the carrier, is used for lifting and lowering, the piston rod 25 of which is articulated on a rocker arm 26, which is articulated on the carrier 23 by means of a pivot axis 27.
  • a link 28 is articulated on the rocker arm 26, the other end of which is articulated to the support 21, so that a pivoting movement of the rocker arm 26 about its pivot axis 27 causes the support 21 to be raised and lowered.
  • a pressure medium cylinder 29 attached to the support 21 serves for closing in the working position B and opening into the spreading position A, the piston rod ⁇ -30 engaging approximately centrally on a cross member 31, which cross member 31 has one end 32, 33 in each case via a hinge plate 34 is articulated to an arm 19 projecting from the parts 17 ', 17 "of the housing 17.
  • the arms 19 are pivoted about their axes 20 and the parts 13 ', 13 "of the cleaning head 13 moved from one another into the spreading position A.
  • a horizontally directed semicircular plate 36 is provided on each part 14 ′, 14 ′′ of the milling head 14, both of which lie within the housing 17 of the cleaning head 13.
  • One of the arms of the double arm 38 engages eccentrically, ie at a distance 40 from the pivot axis 39, the piston rod 41 of a pressure medium cylinder 42, which is supported on the support 21.
  • both parts 17', 17" of the housing 17 are provided with centering projections 46 projecting beyond the parting lines 15 Mistake.
  • cylindrical guide surfaces 47 are provided, each of which is formed by a circular plate 48 on which the centering extensions 46 are advantageously provided.
  • radially arranged adjusting screws 49 are provided in the plates 36, the ends 50 of which abut the contact rod 7.
  • the teeth 51 of the milling head 14 have a profile adapted to the lance head 6. Viewed in plan, they form an angle 52 with one another that is smaller than the maximum angle of the rotary oscillation movement.
  • a cover 53 mounted on the milling head (it is also of a split design) serves to protect the rollers 18.
  • the support 23 carrying the support 21 can be displaced or pivoted laterally next to the converter 3 into the position D shown in FIGS. 2 and 3 in the direction of the double arrow 55 by means of an actuating device 54 in FIG. 1 which aligns the axis 16 of the cleaning head 13 brought into the working position B with the axis 8 of the lance 1.
  • the cleaning head 13 is lowered and its parts 13 ′, 13 ′′ are brought into the spreading position A.
  • the carrier 23 is then pivoted or moved away from the region of the metallurgical vessel with the aid of the actuating device 54.
  • the invention is not limited to the embodiment shown in the drawing, but can be modified in various ways. It can e.g. can also be used to remove metal and slag splashes which attach themselves to the nozzle star of blowing lances, the teeth of the milling head 14 being matched to the contour of the nozzle star.
  • the housing 17 is centered on the blowing lance itself; it extends from the milling head 14 upwards.
  • the device 12 according to the invention is suitable for Cleaning of lance heads of all kinds, for example also for lances that are used in pans or other metallurgical vessels.
  • divisible brushes for example wire brushes, which are adapted to the contour of the lance head.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Investigating And Analyzing Materials By Characteristic Methods (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
EP85890094A 1984-05-08 1985-04-17 Dispositif pour nettoyer la tête d'une lance à introduire dans un récipient métallurgique Expired EP0164331B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0150784A AT381795B (de) 1984-05-08 1984-05-08 Vorrichtung zum reinigen eines lanzenkopfes einer in ein metallurgisches gefaess einbringbaren lanze
AT1507/84 1984-05-08

Publications (3)

Publication Number Publication Date
EP0164331A2 true EP0164331A2 (fr) 1985-12-11
EP0164331A3 EP0164331A3 (en) 1986-04-02
EP0164331B1 EP0164331B1 (fr) 1988-06-01

Family

ID=3515233

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85890094A Expired EP0164331B1 (fr) 1984-05-08 1985-04-17 Dispositif pour nettoyer la tête d'une lance à introduire dans un récipient métallurgique

Country Status (8)

Country Link
US (1) US4591134A (fr)
EP (1) EP0164331B1 (fr)
JP (1) JPH0723889B2 (fr)
AT (1) AT381795B (fr)
CA (1) CA1243202A (fr)
DE (1) DE3563069D1 (fr)
SU (1) SU1447290A3 (fr)
UA (1) UA2123A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2679570A1 (fr) * 1991-07-25 1993-01-29 Lorraine Laminage Dispositif de decrassage d'une lance de soufflage dans un recipient metallurgique, notamment un convertisseur d'acierie.
KR101151769B1 (ko) * 2006-09-27 2012-06-15 코닌클리케 필립스 일렉트로닉스 엔.브이. 방사선 시스템 및 상기 방사선 시스템을 포함하는 리소그래피 장치
WO2012139946A1 (fr) * 2011-04-11 2012-10-18 Siemens Vai Metals Technologies Gmbh Détermination de la position d'un barreau de contact sur un support de sonde d'une sonde technique de fonderie

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103014226B (zh) * 2012-11-28 2014-04-02 夏俊双 转炉氧枪粘渣自动清理装置
DE102014106669B4 (de) 2014-05-12 2023-08-24 Thielenhaus Technologies Gmbh Vorrichtung und Verfahren zur mechanischen Nachbearbeitung einer Oberfläche eines Werkstückes
DE102016120334A1 (de) * 2016-10-25 2018-05-09 Sms Group Gmbh Vorrichtung und Verfahren zur Entfernung von metallischen und nichtmetallischen Anbackungen an Einblaslanzen beim Konvertereinsatz

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU68908A1 (fr) * 1973-01-22 1974-02-11
DE2521833A1 (de) * 1975-05-16 1976-11-25 Krupp Gmbh Verfahren zum diskontinuierlichen messen in der schmelze eines tiegels und/oder entnehmen von proben aus dem tiegel und einrichtung zur durchfuehrung des verfahrens
LU73846A1 (fr) * 1975-11-21 1977-05-31
US4226407A (en) * 1979-03-26 1980-10-07 Bethlehem Steel Corporation Metallurgical lance deskuller
DE3106234A1 (de) * 1981-02-20 1982-09-02 Fried. Krupp Gmbh, 4300 Essen "verfahren und vorrichtung zur beseitigung von ansaetzen an bezueglich eines metallurgischen gefaesses beweglichen lanzen"

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2679570A1 (fr) * 1991-07-25 1993-01-29 Lorraine Laminage Dispositif de decrassage d'une lance de soufflage dans un recipient metallurgique, notamment un convertisseur d'acierie.
KR101151769B1 (ko) * 2006-09-27 2012-06-15 코닌클리케 필립스 일렉트로닉스 엔.브이. 방사선 시스템 및 상기 방사선 시스템을 포함하는 리소그래피 장치
WO2012139946A1 (fr) * 2011-04-11 2012-10-18 Siemens Vai Metals Technologies Gmbh Détermination de la position d'un barreau de contact sur un support de sonde d'une sonde technique de fonderie

Also Published As

Publication number Publication date
DE3563069D1 (en) 1988-07-07
UA2123A1 (uk) 1994-12-26
CA1243202A (fr) 1988-10-18
ATA150784A (de) 1986-04-15
JPH0723889B2 (ja) 1995-03-15
JPS60250254A (ja) 1985-12-10
AT381795B (de) 1986-11-25
EP0164331B1 (fr) 1988-06-01
SU1447290A3 (ru) 1988-12-23
US4591134A (en) 1986-05-27
EP0164331A3 (en) 1986-04-02

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