摘要:
For preventing break-out in a continuous casting plant in which the quantity of molten material being supplied to a mold is controlled to a predetermined level, changes in the quantity of molten material being supplied to the mold is constantly monitored. The time behavior of quantity increases of molten material being supplied to the mold is determined and a break-out signal is produced when the quantity of molten material increases at more than a predetermined rate. The break-out signal may be produced only when the rate of change of molten material in the mold and the rate of change of the speed of a casting leaving the mold are less than predetermined values.
摘要:
A protective nozzle for the outlet passage of a casting ladle includes a body having a conical shape and a through bore with the exterior side surfaces of the body having projections or ridges which aid in the retention and establishing of a mortar joint between the wall of the outlet of the casting ladle and the exterior surface of the nozzle so as to prevent the possibility of the mortar material being washed out of the joint between the nozzle and the walls of the outlet passage of the casting ladle during a casting operation.
摘要:
A device for slag-free discharge into a continuous casting machine has a conventional starting pipe on an inlet of a discharge orifice of a tundish. A separate starting member blocks discharge through the starting pipe and floats upon a melt reaching a desired level. The device has improved features to ensure automatically the timely outflow of slag-free melt to the starting pipe.
摘要:
For a slide closure 10 attached to a pouring vessel 2 which has a movable slide part 14 disposed between a bottom plate 12 and a discharge part 16, there is, in addition to a cylinder piston unit 24 acting on the slide part, which unit is dominant by way of a servocontrol block 26 by regulating arrangement 32, a vibrator 36 which is controlled by an oscillator 34. The vibrator 36 is switched into the connection between the cylinder-piston unit 24 and the movable slide part 14, and is in a position to oscillatingly drive the latter both in its closing position as well as in other positions and, indeed, in the same direction as the cylinder piston unit. A position generator 44 starts the oscillator 34 forcibly in the closed position.
摘要:
A method and installation is disclosed for the replacement of a bottom closure of a track-mounted pugh-type transfer ladle having a transfer container supported by two longitudinally spaced-apart bogies which are pivotally attached to the transfer container for swinging movement about a vertical axis, the transfer container having a removable bottom closure located between said bogies. The ladle is moved longitudinally of itself and the two bogies are directed on to different tracks which are spaced from each other to thereby swing the bogies relative to the transfer container and increase the longitudinal space between the bogies; and thereafter the closure is replaced from below through the resulting increased space.
摘要:
A metallurgical furnace with a discharge chute has a slide closure between the outlet of the furnace and the chute. The chute is preferably detachably secured to the slide closure, on movable parts thereof and can be pivotally supported thereon.
摘要:
The disclosure embraces a sealing member for the joint between an outlet of a casting ladle and a closure member for the outlet and includes a rigid core member having an opening in which is located a tubular casing which fits into the aperture of the outlet of the casting ladle and a closable bore of the closure member; the rigid core member is coated with mortar material in a paste or semi-fluid form; the sealing member is encased in an air-tight package so as to prevent the mortar material from solidifying prior to its incorporation into the joint between the outlet of the casting ladle and the closure member.
摘要:
AN APPARATUS FOR THE INSTALLATION OF REFRACTORY BLOCKS OR STONES AT THE CONTROL-OR SHUTOFF SLIDE MECHANISM OF A LIQUID METAL CONTAINER OR THE LIKE WHICH COMPRISES FRAME MEANS, AND POSITIONING MEANS FOR THE MOVABLE SLIDE ELEMENT OF THE SLIDE MECHANISM PROVIDED AT THE FRAME MEANS. A CENTERING MANDREL IS SUPPORTED IN THE FRAME MEANS AND IS ADAPTED TO ALWAYS ENGAGE WITH A REFRACTORY BLOCK OR STONE. FURTHERMORE, THERE IS PROVIDED A PRES-IN MECHANISM INCLUDING A PRESS MANDREL HAVING A PRESS AXIS. THE PRESS MANDREL IS MOUNTED TO BE RELATIVELY MOVABLE WITH RESPECT TO THE FRAME MEANS INTO AT LEAST TWO WORKING POSITIONS. THE PRESS-IN MECHANISM SERVES TO DISPLACE THE FRAME MEANS AND THE PRESS MANDREL RELATIVE TO ONE ANOTHER. IN ONE OF THE WORKING POSITIONS THE PRESS AXIS OF THE PRESS MANDREL COINCIDES WITH THE LENGTHWISE AXIS OF THE CENTERING MANDREL AND IN THE OTHER WORKING POSITION THIS PRESS AXIS IS DISPLACED PARALLEL TO SUCH LENGTHWISE AXIS.
摘要:
A gate-type sliding valve for the outlet of a casting ladle is provided with support arms on which can be pivotably mounted operating means in the form of a hydraulically actuated piston and cylinder and maintained in their operating position by a torque force created by an unbalanced disposition of the weight of the cylinder and piston relative to their pivot mount.
摘要:
A casting installation comprising a container for a molten metal and provided with control slide means disposed at the region of the bottom opening of the container. The control slide means incorporate a housing and a cover member, with a slide member movably mounted between such housing and cover member. Further, a slide plate is provided for said slide member, said slide plate having a throughflow opening. Means are provided for guiding said slide member in a substantially linear path, such linear guiding means being guide groove means or guide ledge means provided on the cover member. Positioning element means provided at the cover member and the housing engage one another, in order to maintain the path of sliding movement for the slide member which is determined by said linear guiding means in a plane containing the axis of material throughflow.