Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B22—CASTING; POWDER METALLURGY
  • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
  • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
  • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
  • B22D11/053—Means for oscillating the moulds

Definitions

• the invention relates to a vibrating device for a continuous casting mold, especially for the continuous casting of steel.
• the molds When continuously casting steel strands, the molds are in the casting direction oscillates to stick the strand to the cooled inner walls of the To prevent pouring tube.
• These vibrations of the mold can, for example have a frequency of a few Hertz and an amplitude of more than 10 mm, the vibrating mass is several tons.
• the oscillation of the Chill mold therefore requires a very high level of performance. From this results themselves that it is desirable to keep the vibrating mass as small as possible hold.
• a classic vibrating device includes a lifting table on which the Continuous casting mold is arranged as a unit. These lift tables have a relative large mass and also require quite a lot of plan below the mold, where this space is not always available.
• a compact Vibration device described which is an annular lifting cylinder has a mold consisting of a pouring tube and a Cooling box, can be hooked axially.
• the cooling box of the mold is about flexible Pipe connections connected to a cooling water circuit. From this The chill device is relatively easy to install and remove
• the oscillating device is relative due to the annular lifting cylinder complex construction, especially for molds with a large cross-section.
• the present application is based on the task of a compact and to create simple vibrating device into which the continuous casting mold is relatively easy to install and remove.
• a vibrating device comprises a support structure, a Rocker arm of a fork-shaped first lever arm and a second has opposite lever arm, said rocker arm by means of first swivel joints pivoted about an axis in the support structure is a stroke generator with a second lever arm of the rocker arm is connected, as well as an elongated support cage in which the continuous casting mold can be used, with one end of this support cage via second swivel joints the fork-shaped first lever arm of the rocker arm is connected and that other end of this support cage via at least one guide member in the Support structure is guided.
• the continuous casting mold only needs in the Rocker arm attached door cage to be hooked in and is therefore particularly easy to install and remove.
• the rocker arm with support cage is one simple construction, with reasonable effort even with molds Large cross section is customizable and little or no space below the mold occupies.
• the weight of the continuous casting mold can be largely compensate so that the stroke generator does not counter the total weight of the Continuous casting mold must work and can therefore be designed to be relatively small.
• the at least one guide member is advantageous via a first swivel joint with the support structure and via a second swivel joint with the support cage connected. If the supporting cage with inserted continuous casting mold along one circular arc-shaped center line of a casting strand curved in the shape of a circular arc swing, so the axes of the
• Rotary joints are perpendicular to a plane in which the circular arc Centerline is included, with a first straight line being the axes in this plane the swivel joints between rocker arm and support cage and rocker arm and Support structure intersects, and a second straight line the axes of the swivel joints between guide link and support cage and guide link and support structure intersects, and these axes are in such a way that the first Straight line and the second straight line approximately in the center of curvature of the Cut the arcuate center line of the casting strand. Should the support cage When swinging always stay parallel to themselves, so the axes of the rotary joints are such that the predefined first and second straight line are parallel to each other.
• the rocker arm and / or the guide members each have at least one channel for a cooling liquid on a first Swivel connection, in one of the first swivel joints, in one relative to the Support structure fixed pipe socket opens, and the second Swivel connection, in one of the second swivel joints, in one relative to the Support cage fixed pipe socket opens.
• the support cage advantageously comprises a lower and upper U-shaped frame which are advantageously rigidly connected.
• the continuous casting mold can be used laterally, the lower and the upper U-shaped Frame can be closed by a crossbar.
• the support cage advantageously comprises lateral pressing means for centering without play the continuous casting mold in the casting axis.
• the invention also relates to a continuous casting device with a vibrating device as described above.
• a continuous casting device has Example of a continuous casting mold with at least one upper collector, the is designed as a mat to match the upper U-shaped frame.
• the continuous casting mold can be designed as a tubular mold or from molded plates be composed. If the continuous casting mold is composed of shaped plates, the support cage improves its mechanical stability.
• the above-mentioned shaped plates each advantageously have a box-shaped one upper and lower collector, which are arranged such that at Cage mounted continuous casting mold, the upper collector of the mold plate the upper U-shaped frame, and the lower collector the lower Reaches under a U-shaped frame.
• the lower and upper collector have advantageous each at least one coolant connection and they are through Cooling channels connected to each other in the mold plate. To be even To ensure the flow of these cooling channels, the lower and upper Collector between the coolant connection and the mouths of the Cooling channels a cross-sectional narrowing.
• a continuous casting mold includes several coolant supply or return connections, it advantageously surrounds at least one lead or Return ring line.
• These ring lines are at least one, in essential rigid pipe connection to at least one of the relative to Carrying cage fixed pipe socket connected, and via spur lines connected to the flow or return connections of the continuous casting mold.
• the oscillating device in Figure 1 consists essentially of a Support structure 10 (shown in dashed lines), a rocker arm 12, one Stroke generator 14, two guide members 16 'and 16' 'and a support cage 18 for a continuous casting mold 20 (shown here in the removed state).
• the support structure 10 consists of a cylindrical housing 22 and a mounting plate 24.
• the rocker arm 12 is fastened in the housing by means of two swivel joints 26 ', 26' 'in such a way that it is one can swing substantially horizontal axis 28. It includes a first fork-shaped lever arm 30, and a second, opposite one-piece lever arm 32.
• the stroke generator 14, which is advantageous as hydraulic lifting cylinder is articulated with the second lever arm 32 connected.
• This lifting cylinder 14 is also articulated with a Housing flange 34 connected and is supported by this on the support structure 10 from.
• the two guide members 16 ', 16' ' are also by means of two rotary joints 26 ', 26' 'mounted in the housing such that they are both substantially one horizontal axis 38 can swing.
• the support cage 18 is via swivel joints 40 ', 40' '(in FIG. 1 this is only that Swivel 40 '' visible) connected to the rocker arm 12 such that Rocker arm 1 2 and support cage 18 about an axis 42 relative to each other are rotatable.
• the support cage 18 is also via swivel joints 44 ', 44' '(in FIG 1, only the swivel joint 44 '' is visible) with the guide members 16 ', 16' ' connected such that guide members 16 ', 16' 'and support cage 18 by one Axis 46 are rotatable relative to each other.
• the vibrating device is shown in a highly simplified manner as a gear, the aforementioned axes of rotation 28, 38, 42 and 46 all perpendicular to Stand level of Figure 2 and are thus shown as points.
• the supporting structure 10, which surrounds the support cage as the outer housing, is fixed points 10 ', 10 '' and 10 '' 'indicated.
• the individual movable links of the transmission are the rocker arm 12, with its two arms 30 and 32, the guide members 16 ', 16' ', and the support cage 18.
• the reference number 19 shows a counterweight. Such a counterweight can be attached to the second lever arm 32 are around the weight moment of the support cage 18 acting on the lever 30 compensate with mold 20 inserted.
• the drive of the gearbox is as Lift cylinder 14 shown.
• G1 a straight line is designated which through the Points 28, 42 is defined, while G2 denotes a straight line through points 38, 42 is defined.
• G1 and G2 intersect a point "O" which corresponds approximately to the center of an arc 50 which represents the center line of an arcuate casting strand.
• the radius of such an arcuate casting strand is Example about 10 m. If the lifting cylinder 14 is actuated, the support cage swings 18, with small vibration amplitudes (of the order of approx 10 mm), in a first approximation tangential to the arc 50.
• the support cage is essentially an upper U-frame 50 and a lower U-frame 52 includes. Both are U frames rigidly connected to one another via vertical profiles 54.
• the upper U frame 50 serves as a support for a collar-shaped support 60 of the continuous casting mold 20.
• the continuous casting mold 20 is laterally in the Carrier cage 18 introduced.
• the lower U-frame 52 is advantageous here from under a collar-shaped lower border 62 of the continuous casting mold 20. After the continuous casting mold 20 is suspended in the support cage 18, the two U-frames 50 and 52 are closed by crossbeams 50 ', 52'.
• Pressure means for example screws 56, are advantageous on all four Sides of the support cage 18 arranged so that they are on the one hand Support cage and on the other hand on the continuous casting mold 20 to a To allow play-free centering of the continuous casting mold 20 in the support cage 18.
• the continuous casting mold 18 can be used as a tube or plate mold for casting the various products, such as billets, pre-profiles (beam blanks), slabs, thin slabs, etc.
• a plate mold for the vibrating device shown.
• This plate mold is composed of four shaped plates 64 which is a pouring channel with a substantially rectangular or square cross section.
• Figure 3 is a longitudinal section shown by two of these mold plates 64.
• Such a molding plate 64 comprises upper and lower box-shaped collectors 66 and 68, respectively are designed so that they are the upper in the assembled mold collar-shaped support 60, or the lower collar-shaped Form border 62 of the continuous casting mold 20.
• Each of the collectors 66 and 68 has a connection 66 'or 68' for a coolant line on.
• the coolant flows through port 68 ' the lower collector 68 a.
• the cross-section 68 '' introduced into cooling channels 70.
• the latter cross the body 72 of the Form plate 64, for example made of pure copper or a copper alloy can exist before it has a cross-sectional constriction 66 '' in the open upper collector 66.
• the cooling channels 70 are in the body 72 in this way the mold plate 64 arranged that proper cooling of the surface 74 of the molding plate 64 is ensured in the pouring channel.
• the mold according to Figure 4 i.e.
• the cooling channels 70 ' are, for example, as Drilled holes or cast channels in the body 72 of the mold plate 64.
• the cooling channels 70 '' advantageously milled into the body 72 and with a welded-on plate 71 locked.
• the milled cooling channels 70 ′′ are constant Distance behind the curved cooling surface.
• a cooling space in the form of a gap can also be arranged in the cooling surface, which then is advantageously divided into cooling channels by ribs. In this case it is Form plate advantageously, like a sandwich, composed of two halves.
• the continuous casting mold suspended in the support cage could of course, how known to be supplied with a coolant via flexible lines. 4 and 5, however, is a far more advantageous solution for supplying the continuous casting mold with a cooling liquid in an inventive Vibration device described.
• the supply of the continuous casting mold with a coolant according to this solution the four swivel joints 26 ', 26' ', 40', 40 '' and the two arms 30 ', 30' 'of the Rocker arm 12.
• the pivot joint 26 ' comprises one on the Support structure 10 rotationally fixed cylindrical support pin 100 one has axial blind bore 102.
• the trunnion 100 is in a bearing bore 104 of the rocker arm 12 introduced.
• the bearing bore 104 forms the axial blind bore 102 from a radial junction 106. Opposite the The opening 106 forms a channel 110 in the arm 30 ′ of the rocker arm 12 also a junction 112. Both junctions 106 and 112 are designed in such a way that they rotate when the rocker arm 12 rotates The trunnion 100 always overlap enough to ensure a perfect transition to ensure the cooling medium. Using O-rings 108 or others The radial play of the trunnion 100 in the bearing bore becomes sealant 104 axially sealed.
• the swivel joint 40 ′′ has a similar structure.
• a cylindrical trunnion 120 which has an axial blind bore 122 is rotationally fixed to the supporting cage 18 connected.
• This support pin 120 is in a bearing bore 124 of the arm 30 ' of the rocker arm 12 introduced. Overlapping in the bearing bore 124 Merges is blind bore 122, as described above, with the Channel 110 in the arm 30 'of the rocker arm 12 connected.
• the coolant can now flow through a fixed bearing journal 102 firmly connected pipe socket (schematically indicated by arrow 103) in the axial bore 102 are initiated. From here it can enter the canal 110 pass through this channel 110 into the swivel joint 40 ', here in pass through the blind bore 122 of the pivot pin 120 and through the blind bore 122 in a pipe connection which is firmly connected to the pivot 102 130 'flow.
• This pipe connection 130 ′ which can be swung with the support cage 18 opens into a ring line 132, which is connected by branch lines 134 (see FIG 5) with the individual connections 68 'of the lower collector 68 of the continuous casting mold connected is.
• the second arm 30 ′′ of the rocker arm 12, with the swivel joints 26 ′′ and 40 ′′, can then, as shown in Figure 4, as a connection of the upper collector 66 of the Continuous casting mold to a fixed return line for the coolant (schematically indicated by arrow 105).
• This is a second ring line 136 via stub lines 134 (see FIG. 5) with the individual Connections 66 'of the upper collector 66 of the continuous casting mold 20 connected.
• a rigid pipe connection 130 ′′ closes this second ring line 136 rigidly on the pivot of the swivel joint 40 '' (the second ring line 136 can therefore also be oscillated with the mold 20.
• the coolant passes into the second lever arm 30 ′′ and passes over this into the swivel joint 26 ′′, where it enters the fixed return line 105 entry.
• both arms 30 'and 30' 'of the rocker arm 12 for the Coolant supply can be used.
• the two are Guide members 16 ', 16' 'with their swivel joints 36', 36 '', 44 ', 44' ', as in Figure 3 indicated, advantageously designed as a return connection for the cooling liquid.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Continuous Casting (AREA)
• Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
• Die Bonding (AREA)
• Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
• Forklifts And Lifting Vehicles (AREA)
• Confectionery (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=19731574

Family Applications (1)

Country Status (9)

Families Citing this family (9)

Family Cites Families (5)

• 1996
  • 1996-01-18 LU LU88702A patent/LU88702A1/de unknown
• 1997
  • 1997-01-09 DK DK97902164T patent/DK0876230T3/da active
  • 1997-01-09 WO PCT/EP1997/000049 patent/WO1997026099A1/de not_active Ceased
  • 1997-01-09 DE DE59700687T patent/DE59700687D1/de not_active Expired - Fee Related
  • 1997-01-09 US US09/091,721 patent/US6167940B1/en not_active Expired - Fee Related
  • 1997-01-09 ES ES97902164T patent/ES2138856T3/es not_active Expired - Lifetime
  • 1997-01-09 AU AU15917/97A patent/AU1591797A/en not_active Abandoned
  • 1997-01-09 EP EP97902164A patent/EP0876230B1/de not_active Expired - Lifetime
  • 1997-01-09 AT AT97902164T patent/ATE186485T1/de not_active IP Right Cessation

Also Published As

Similar Documents

Legal Events