摘要:
Disclosed is a lateral seal of a casting gap formed between two casting rollers of a strip casting machine. Said lateral seal can be placed against the casting rollers on the front face. The inventive lateral seal (10) comprises a first moist part (12) and a second part (13) that is assigned to the front faces of the casting rollers (1, 2). Said second part (13) forms a type of snout shape encompassing two legs which extend along the front faces of the casting rollers, join each other at the bottom, above a kissing point, so as to form a common area, and between which the first part (12) protrudes from above. An insulating layer (18) which separates the two parts (12, 13) from each other is inserted between said first and second part.
摘要:
An apparatus serves for the continuous surface cleaning of rotationally movable casting rolls (2, 3) of a strip-casting machine. A plurality of laser beam units (25) are arranged on the circumference of the respective casting roll (2, 3), which laser beam units (25) are arranged next to one another, are distributed over the casting-roll length and by means of which the casting-roll surface (2a, 3a) can be acted upon with one or more laser beams over the entire casting-roll length. Additional cleaning units (30, 31, 35, 45) for the mechanical cleaning of the casting-roll surface are advantageously connected ahead of and/or behind the laser beam units (25). This makes gap-free and regular surface cleaning of the casting rolls possible.
摘要:
The invention relates to a method of operating a strip casting machine for producing a metal strip, during which molten metal is continuously poured between two casting rolls (1, 2) that form a casting gap. Lateral seals (10) having sealing plates (11) are provided for laterally delimiting the casting gap, whereby the sealing plates (11) are placed or pressed with a preset placement or pressing force, whose magnitude can be set, against the end surfaces of the casting rolls (1, 2). The sealing plates (11) are, in repeatable stop-and-go steps, placed with a preset force and time against the end surfaces of the casting rolls (1, 2) and are held in the placing position for a preset time. This enables a distinct reduction in the wear of the sealing plates and of the casting roll end surfaces.
摘要:
The invention relates to a method of operating a strip casting machine for producing a metal strip, during which molten metal is continuously poured between two casting rolls (1, 2) that form a casting gap. Lateral seals (10) having sealing plates (11) are provided for laterally delimiting the casting gap, whereby the sealing plates (11) are placed or pressed with a preset placement or pressing force, whose magnitude can be set, against the end surfaces of the casting rolls (1, 2). The sealing plates (11) are, in repeatable stop-and-go steps, placed with a preset force and time against the end surfaces of the casting rolls (1, 2) and are held in the placing position for a preset time. This enables a distinct reduction in the wear of the sealing plates and of the casting roll end surfaces.
摘要:
The invention relates to strip casting machines comprised of two parallel casting rollers (1, 2) whose bearing journals (8, 9) are supported on a stand (3). Cooled roll barrels of the casting rollers (1, 2) and narrow lateral parts (5) delimit a casting gap (6). The aim of the invention is to obtain an optimal ratio between the width of the casting machine and the maximally castable strip width, to provide for a simple stand construction both for changing rollers as well as for exchanging narrow lateral parts, and to attain an improved protection against oxidation. To these ends, the invention provides that the cooled roll barrels are constructed as cylindrical casings (4). The casing (4) should be supported on a stationary axle, which is fixed on the stand (3), via the concentric support rings which project inside the casing (4) on both sides and which are connected to the same.
摘要:
The invention relates to a strip-casting machine (20) for producing a metal strip. Said strip-casting machine consists of a pair of casting rolls (22, 24) arranged in side-by-side parallel relation with a casting gap thereinbetween and of lateral sealing elements (25) that are provided with respective sealing plates (61) at both sides of the casting rolls (22, 24) that are pushed or pressed against the casting rolls from the front by means of pushing or pressing means. The respective sealing plate (61) is pushed or pressed against the two equilateral front faces (22′, 24′) of the casting rolls (22, 24) in such a manner that, in the heated operational state, it facilitates an extremely exact positioning on the front faces of the casting rolls. To this end, the sealing plate (61) is mounted in such a manner as to allow a three-dimensional displacement of the sealing plate, as if floating.
摘要:
A roller apron framework for support- or drive rolls of a continuous casting installation wherein at least at one strand guide path each two rollers or rolls which follow one another in the direction of travel of the continuously cast strand are mounted in a common pivotal yoke and such yoke can be moved by piston-cylinder units substantially transversely with respect to the guided surface of the strand. The yoke is provided with impact surfaces and can be applied by means of the piston-cylinder units against support surfaces associated with each roller, the support surfaces being arranged at a stationary frame and limiting the path of application or adjustment of the rollers at the strand.
摘要:
The invention relates to a method for operating a strip casting machine for producing a metal strip during which molten metal is continuously poured between two casting rolls (3, 4) that form a casting gap. Sealing plates (2b) are provided for laterally delimiting the casting gap, whereby the sealing plates (2b) are displaced during the casting operation in an oscillating manner transversal to the direction of the axis of the casting rolls (3,) counter to the front surface (3a, 4a) of said casting rolls (3, 4). Said sealing plates (2b) are displaced in an oscillating manner in and counter to the direction of the periphery (U3 and/or U4) of the casting rolls (3, 4), whereby displacement takes place in an alternating manner along one or the other casting roll edges (3k and/or 4k). Partial solidifcations can, to a large extent, be prevented from forming and can be removed if need be. The produced metal strip has clean edges.
摘要:
The reliable sealing of a gap (10), between a roller front face (7) and a side seal (3) on a roller-strip-casting machine is achieved by the generation of an electrical eddy field in the region of the gap (10), such as to produce a local gradient field (13). The eddy currents generated in the metal melt for casting prevent the ingress of the metal into the gap (10) or eject the metal from the gap (10). The risk of escape of liquid metal is essentially eliminated and the formation of ridges on the narrow edge of the metal strip avoided.
摘要:
The invention relates to a strip-casting machine (20) for producing a metal strip. Said strip-casting machine consists of a pair of casting rolls (22, 24) arranged in side-by-side parallel relation of lateral sealing elements (25) that are provided with respective sealing plates (61) at both sides of the casting rolls (22, 24) and that adjoin the casting rolls. The contact pressure of the sealing plate (61) against the casting rolls (22, 24) and/or the frictional conditions between them can be measured. The sealing plates (61) at the front faces (22′, 24′) of the casting rolls (22, 24) are positioned at a distance of a few tenth of millimeters or so as to closely fit the front faces (22′, 24′) in the operational state, with our without contact pressure. The sealing plates are positioned in such a manner that also in the heated operational state the desired positions of the sealing plates relative to the front faces of the casting rolls are kept very precise.