FR2498499A1 - MANIKIN GUIDING, EXTRACTING AND INTRODUCING DEVICE FOR CONTINUOUS CASTING MACHINE - Google Patents

Abstract

MANIKIN GUIDANCE, EXTRACTION AND INTRODUCTION DEVICE FOR VERTICAL CONTINUOUS CASTING MACHINE OF BLOOMS AND BILLETS. MANNEQUIN 2 IS CARRIED BY TWO RAILS 8, 9 PARALLEL TO COLOR LINE 4, DOWNSTREAM RAIL 9 CAN TILT AROUND A FIXED POINT 10 LOCATED DOWNSTREAM FROM THE DUMMY DROP-OFF POINT.

Description

The present invention relates to a guiding device,

  extraction and introduction of false-bar, or "manikin", intended

  born to equip a continuous vertical casting machine for blooms and billets. It is known that in a continuous casting machine it is necessary to

  for the start of the casting of butcher the bottom of the ingot mold-

  by a fake-bar, or mannequin. At the beginning of the casting, the liquid steel

  is poured into the ingot mold, the bottom of which is clogged with manna.

  then, when a solidified steel plug is formed,

  the dummy is pulled back, at the casting speed, the

  along the casting line. In most known devices

  the manikin is then detached from the cast product at the end

  line by deviation on a storage channel.

  In the case of continuous slab casting, it is necessary, in

  particular because of the significant ferrostatic pressure, the

  n the product cast all along the casting line by rollers very close to each other. In the opposite case, either blooms or billets, which are good section products, are cast.

  weaker, these rollers have, at a sufficient distance from the lingo

  rather than a guiding role, so that they can be very

  in the direction of the casting. It is then possible to extract the man-

  nequin before the end of the casting line, at a distance from the

  just sufficient for the cast product to have acquired

  enough to continue to be carried without the aid of a manikin. It is thus possible to start on the same line a new casting before waiting for the end of the previous casting, because the manikin for the new casting may be introduced

  in the bottom of the mold without the need to wait for

  complete evacuation of the previous bar, still in the grip of the

  machine, which allows an interesting increase in productivity.

  A device allowing such manikin extraction in the middle of the casting line is currently known in an application to

  a curved casting machine and is described in US Pat.

  United States No. 3,628,595. In such a device, the dummy is carried by a trolley on a curved rail parallel to the line.

  casting. This rail, whose length is less than the casting line, pre-

  at its downstream end there is a change of curvature whose role is to tilt the carriage and consequently to cause the extraction of the manikin. For such a device, particularly suitable for curved casting, the carriage is carried by an arm describing an arc of

  circle around a fixed axis, this arm may however slightly

  in length thanks to its telescopic construction. Such a provision

  on the one hand the disadvantage of being built only for one

  China casting curve, and secondly has the disadvantage of only allowing the extraction of the manikin at a specific place depending on the length of the rail. It does not allow flexibility

  which would have a device for extracting the manikin thanks to

  which one could perform said extraction at a location chosen as desired depending in particular on the casting speed and

  transverse dimensions of the cast product.

  The device of the invention does not have these drawbacks.

  vantages. It is intended to be used in a casting machine

  tin of blooms or billets of vertical type, as well as curved

  rectilinear, it is of the type according to which the false-bar of amor-

  or "manikin", is carried by a carriage moving on a

  or several rails parallel to the casting line, and is characterized

  in that the at least one rail has at least one portion capable of

move around a fixed point.

  The invention will be better understood from the following description:

  example of an embodiment applied to a vertical casting machine.

  wedge and rectilinear blooms or billets, with reference to the accompanying drawings in which:

  FIG. 1 is a schematic side view of the device of FIG.

vention

  FIG. 2 is a schematic section along the direction aa of the FIG.

gure 1.

  In FIG. 1, the reference numeral 1 designates the mold which is figuratively plugged, in its casting start position, by

  a false priming bar, or "manikin" 2. In a very

  liquid steel from a ladle is poured into a

  tributeur not shown and from there in the mold 1. We distinguish

  still in the figure the conventional rolls 3 of support and guide-

  of the cast product which are, as can be seen in the drawing, very close to each other in the immediate vicinity of the mold, where the solidification is still only precarious, then much

  further apart along the pouring line 4 further down the line

  cup, said rollers having only a guiding role.

  As can be seen from the drawing, and according to the invention

  2, the manikin 2 is carried, by means of an arm 6, by a carriage 5 moving, thanks to rollers 7, on a rectilinear rail and parallel to the casting line 4, consisting of two parts normally adjacent 8 and 9, the upstream portion 8 being

  fixed in position, and the downstream part 9 can on the other hand pivot

  turn of a fixed axis 10, located downstream from the stall or

  manikin, under the action of a hydraulic cylinder 11, the

  10 and the cylinder 11 being attached to the frame of the apparatus as schematically shown in the drawing. In a conventional manner, the carriage 5 is moved in translation along the rail (8, 9) using

  of an electric motor not shown and controlled remotely.

  Similarly, the hydraulic cylinder 11, which is a double-acting cylinder, is controlled remotely using a very hydraulic circuit

  classic that we have not shown in the figure.

  When starting the casting, the rails 8 and 9 are in alignment with each other, and, bringing the carriage 5 in the high position, is introduced the manikin 2 in the lower part of the mold 1. When the casting starts, the carriage is moved downward along the rail (8, 9) at the casting speed which causes the bar to be accompanied by the manikin 2. When the manikin has reached a desired distance sufficient for the particular conditions of the casting

  the bar cast by the manikin is no longer necessary,

  that, by retracting the rod of the cylinder 11, the tilting of the rail 9 to-

  turn of the axis 10 so as to bring it in the position represented by dots 9a in the drawing. As we see in the figure,

  the manikin and the trolley pass from the position designated by the

  ferences 2 'and 5' in the position designated by the references-2'a and S'a, which obviously causes the uncoupling of the dummy of the cast bar. It can thus be seen that, thanks to this device, there is a great deal of freedom as regards the choice of the point of uncoupling of the manikin, it being understood, of course, that the extraction can only take place when the manikin 2 n is not riding on support rollers such as. designated rolls

  by the reference 3 'in the drawing. This type of extraction is

  made possible only because the distance between

  the rollers such as 3 and 3 'are greater than

  than the height of the manikin which is usually of

next to a meter.

  Figure 2 shows schematically how, for the

  of the invention, the manikin 2 can accompany the product

  despite the presence in some places of four rolls of

  3. As can be seen in this drawing, the manikin 2 is connected to the

  riot 5 by an arm-6 which is positioned so that it passes between the rollers 3, at one of the corners of the square or rectangle formed by

  them. As can be seen in the drawing elsewhere, and in a

  the four rollers 3 are mounted journalling about fixed axes 21 by means of bearings 12, the pins 21 being carried

  by supports 13 secured to the frame.

Claims (2)

  1. Device for guiding, extracting, and introducing false   priming bar for vertical continuous casting machine of blooms or billets, of the type according to which the priming fuse bar (2) is carried by one or more rails (8,9) parallel to the casting line (4) ), characterized in that the at least one rail has at least one   part (9) able to swing around a fixed point (10).   2. Device according to claim 1, characterized in that the or   said rails consist of a first rectilinear portion (8) fixed in position and located in the immediate vicinity of the mold (1) and a second rectilinear portion (9) pivotable about a fixed point (10) located in downstream of the stall point of the false-bar (2 ') or   introducing it into the casting line (4).