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
  • B22D41/24—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 characterised by a rectilinearly movable plate
• • 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
  • B22D41/50—Pouring-nozzles
  • B22D41/56—Means for supporting, manipulating or changing a pouring-nozzle

Definitions

• Shutter-regulator device for continuous hot casting, with improved nozzle exchanger.
• the invention relates to installations for continuous hot casting, which are used in particular for the production of raw steel products.
• An essential element of such an installation is the casting member, which is called the submerged nozzle.
• the casting member which is called the submerged nozzle.
• the submerged nozzle Mounted on a metallurgical or steel container, it ensures a good distribution of the flow of liquid metal, which must ultimately lead to a continuous casting path, where a progressive cooling and solidification of the liquid metal takes place. All parts in contact with metal at high temperature are naturally made of refractory material. They are also subject to wear or blockage, in particular the nozzle, which must be changed periodically to extend the casting sequence.
• a shutter-regulator device for continuous hot casting intended to be mounted on a metallurgical or steel container, and of the type comprising, on a frame, a shutter assembly. , a path for supplying a pouring tubing known as a submerged nozzle, adjacent to the outlet of the obturator, spring plungers for maintaining this nozzle in the operating position in line with the obturator assembly, on the inlet path, which is suitable for receiving another nozzle in the standby position, and a translator with offset cylinder, provided with a nozzle drive arm, while resting on a cam track. It seemed difficult to do better, especially more compact. The present invention, however, further improves things.
• the cylinder body is provided at the head with a probe capable of cooperating with the cam track, and also supports the drive arm, while the cylinder rod is fixed to the frame. This makes it possible to reduce the dimensional size of the device.
• the jack is contracted when a nozzle is operating, while it is extended for the displacement of the nozzles by pushing.
• FIG. 1 is a simplified plan view of a nozzle device according to the invention
• FIG. 2 is a vertical section of FIG. 1, along the line II-II, and
• Figure 3 a vertical section of Figure 1, along the line III-III.
• the frame of the device is defined by beams 102 and 103, joined to the right by a cross member 101 ( Figure 1), and surmounting parallel lower beams 104 and 105 (Figure 3).
• the beams are held in place by an assembly comprising elements for guiding a cylinder body 504 and a frame 106.
• a cover 200 enclosing a refractory piece 201 ( Figures 2 and 3). This part 201 ensures the connection with the refractory of the container under which the device is fixed, in known manner.
• two other superposed refractory plates are provided, 202 and 203.
• the central plate 202 is used for controlling the flow rate in the nozzle, using a jack control mechanism, not shown here (see EP-B-0 441 927).
• the plate 202 is enclosed in a movable frame which can slide between the elements 104 and 105 of the frame (FIG. 3).
• the path for supplying the nozzles is visible at the end at 310 in FIG. 2.
• one of the guide profiles is seen intended to cooperate with one of the straight edges of the nozzle base: 320 and 321 slightly ascending profiles, then the pushers 323 to 325 (elastic recalls for example at 330 and 340, FIG. 2), and then an output profile 326, descending.
• brackets such as 400 ( Figure 3) which support and guide the translation mechanism of the nozzles.
• This comprises a jack body 501 (FIG. 2), slidably mounted on bronze pads 502 and 503 in a U-shaped housing denoted 504.
• the head of this jack body comprises a tab 510 (FIG. 3), provided with 'A lateral feeler pin 511, which follows a horizontal cam path 520.
• a block 530 articulated around the feeler pin 511, which can also cooperate with a complementary oblique part 521 of the cam track.
• a pusher arm 540 seen in cross section in Figure 3, but visible in Figure 2 in the path of the nozzles (not shown).
• the end of the cylinder rod is visible at 550 in FIG. 3, where it is surmounted by the hydraulic supply system 560.
• This system communicates with the rod to provide hydraulic supply to the cylinder.
• the rod is mounted fixed or articulated on the frame with the possibility of at least partial angular movement (around a horizontal axis).
• the cylinder When a nozzle (not shown) is in operation, the cylinder is contracted, and is in position A ( Figures 1 and 3). A new nozzle is waiting on the supply path, in contact with the operating nozzle, on the side of the cylinder head.
• the pusher arm is located at the top of the complementary cam path 521, to allow it to be pivoted into the molten steel bath, without necessarily raising the distributor.
• the cylinder is extended, and pushes the two nozzles together, so that the new one comes into the operating position, while the old one comes out from the left ( Figure 3), and can then be removed from the steel bath in a known manner. After that, the cylinder can return to the contracted position.
• the device described above is particularly compact.
• the arrangement of the jack contributes to its compactness when a large part of the stroke of the jack body takes place within the dimensions of the rest of the device. It also allows a very rapid change of nozzle, which is essential. Furthermore, this change is made when the cylinder is in extension, which allows an operator to provide less pressure force.
• the arrangement of the cylinder inside the device provides better protection, in particular of the cylinder rod, from the heat given off by the molten metal.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Continuous Casting (AREA)
• Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
• Injection Moulding Of Plastics Or The Like (AREA)
• Multiple-Way Valves (AREA)
• Spray Control Apparatus (AREA)
• Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
• Mechanically-Actuated Valves (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=9504811

Family Applications (1)

Country Status (19)

Cited By (1)

Families Citing this family (11)

Family Cites Families (4)

• 1997
  • 1997-03-14 FR FR9703137A patent/FR2760667B1/fr not_active Expired - Fee Related
• 1998
  • 1998-03-09 AU AU63056/98A patent/AU718727B2/en not_active Ceased
  • 1998-03-09 CN CN98803310A patent/CN1072076C/zh not_active Expired - Fee Related
  • 1998-03-09 AT AT98907087T patent/ATE202736T1/de not_active IP Right Cessation
  • 1998-03-09 KR KR1019997008332A patent/KR20000076237A/ko not_active Application Discontinuation
  • 1998-03-09 DE DE69801044T patent/DE69801044D1/de not_active Expired - Lifetime
  • 1998-03-09 PL PL98335687A patent/PL185939B1/pl not_active IP Right Cessation
  • 1998-03-09 EP EP98907087A patent/EP0966334B1/de not_active Expired - Lifetime
  • 1998-03-09 BR BR9808319-8A patent/BR9808319A/pt not_active IP Right Cessation
  • 1998-03-09 TR TR1999/02165T patent/TR199902165T2/xx unknown
  • 1998-03-09 JP JP54027998A patent/JP2001515410A/ja active Pending
  • 1998-03-09 RU RU99122024/02A patent/RU2198069C2/ru not_active IP Right Cessation
  • 1998-03-09 WO PCT/IB1998/000387 patent/WO1998041344A1/fr not_active Application Discontinuation
  • 1998-03-09 ES ES98907087T patent/ES2161040T3/es not_active Expired - Lifetime
  • 1998-03-09 CA CA002283244A patent/CA2283244A1/en not_active Abandoned
  • 1998-03-09 SK SK1215-99A patent/SK121599A3/sk unknown
  • 1998-03-12 ZA ZA982105A patent/ZA982105B/xx unknown
  • 1998-03-13 AR ARP980101161A patent/AR012073A1/es unknown
• 1999
  • 1999-09-14 US US09/395,660 patent/US6213357B1/en not_active Expired - Fee Related

Non-Patent Citations (1)

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