摘要:
The invention relates to an electromagnetic braking device for molten steel that flows into a continuous casting mould (1). Said device comprises at least one solenoid (2) with a ferromagnetic core (5) that is allocated to the broad sides (3, 4) of the mould. To reduce the oscillating mass and at the same time increase the strength of the magnetic field, the core (5) consists of a primary part (6) that houses the solenoid (2) and can be displaced at a distance from the broad side walls (3, 4) and attachments (8, 8′) that are fixed in water tanks (7, 7′) of the mould (1). When combined in their operating position, the core parts (6, 8) produce U-shaped yokes (9, 9′) for generating a closed magnetic flux (10) and when moved apart, cause the magnetic flux (10) to be interrupted.
摘要:
A method for continuous casting from molten metal, where metal flows vertically downward from a mold and metal strip is then guided vertically downward along a vertical strand guide, cooling as it moves. The strip is deflected from the vertical direction to the horizontal direction. In the terminal area of the deflection of the strip into the horizontal direction or after the deflection into the horizontal direction, a mechanical deformation of the strip is carried out. The strip is cooled at a heat-transfer coefficient of 3,000 to 10,000 W/(m2 K) in a first section downstream of the mold and upstream of mechanical deformation of the strip. In a second section, downstream of the cooling, the strip surface is heated to a temperature above Ac3 or Ar3 by heat equalization in the strip. The mechanical deformation is subsequently carried out in a third section.
摘要:
A device for the hydraulic positioning of structural component parts, in particular rollers of strand guide segments of a continuous casting installation, with hydraulic cylinders, each of which is divided into a cylinder space and an annular cylinder space by a piston having a piston rod. The cylinder spaces can be connected to a pressure source by of control members. Hydraulic connection lines are reduced or components used are reduced. Either the annular cylinder space is acted upon by a pressure which is adjustable but which then remains constant, while the pressure applied to the piston in the cylinder space is position-controlled or pressure-controlled, or the cylinder space is acted upon by a pressure which is adjustable but which then remains constant, while the pressure applied to the piston in the annular cylinder space is position-controlled or pressure-controlled.
摘要:
A device for coupling a coolant supply to a roller, in particular for continuous casting installations, wherein the roller is supported for rotation in a stationary pillow block, includes a sealing unit coupled to an axial roller borehole in a pressure-tight manner, and a stationary pillow block cover releasably attached to the pillow block and covering the axial roller borehole. An insert may extend through a center opening of the pillow block cover and be attached to the pillow block cover by a flange. The inside diameter of the center opening of the pillow block cover may be greater than an outside diameter of the bush to enable a removal of the sealing unit from the roller borehole without removal of the pillow block cover.
摘要:
Disclosed is a method for removing loose scale and other foreign matter from the top and/or bottom face of a cast product (3), such as a slab, thin slab, profiled element, or similar, with the aid of flowable media which are sprayed onto the cast product (3) by means of a cleaning device (5) comprising at least one spraying apparatus (8, 9) that is disposed above the cast product (3) and at least one spraying apparatus (8, 9) that is arranged below the cast product (3). According to said method, the amount of media and/or the effective width and/or the pressure of the media is/are controlled separately and independently of time for each spraying apparatus (8, 9). The invention also relates to a device for removing loose scale and other foreign matter from the top and/or bottom face of a cast product (3) with the aid of flowable media which are sprayed onto the cast product (3) by means of a cleaning device (5) comprising at least one spraying apparatus (8, 9) located above the cast product (3) and at least one spraying apparatus (8, 9) located below the cast product (3). The spraying apparatuses (8, 9) and/or the nozzles (13) that are placed on the spraying apparatuses (8, 9) are configured so as to respond via a controller/a guiding system.
摘要:
The invention relates to a dummy bar (1) for a continuous casting installation for casting a metal strand, including a dummy bar head (2), a transition piece (3) and a link chain (4), wherein the transition piece (3) and/or the link chain (4) are made of a plurality of links (5, 6) that are connected to each other in an articulated manner, and wherein the links (5, 6) can be pivoted relative to each other about a transverse axis (Q) extending perpendicular to the longitudinal axis (L) of the dummy bar (1). In order to particularly prevent internal stresses in the dummy bar when replacing parts of the dummy bar, the invention provides for at least one articulated joint (7) to be configured between two links (5, 6) that are connected to each other in an articulated manner, such that said joint allows a relative pivoting movement of the links (5, 6) about the transverse axis (Q) that is greater than any pivot angle (α) occurring during the use of the dummy bar (1). In or on the joint (7), a locking element (8) is displaceably arranged in a direction (T) perpendicular to the longitudinal axis (L) of the dummy bar (1) and perpendicular to the transverse axis (Q). The locking element (8) can assume a position (A) in which the pivoting movement of the links (5, 6) is not influenced by the locking element (8), and a position (B) in which the pivoting movement of the links (5, 6) is limited to a predetermined pivot angle in a pivoting direction. The invention further relates to a method of the continuous casting of a metal billet using such a dummy bar.
摘要:
The invention is based on the object of creating a strand guide roller being configured in a modular manner, which can be retrofitted to different stand casting widths without any substantial effort, and which has a cooling effect starting from the core regions of the roller extending up to the region near the surface thereof, thereby improving the life of the strand guide roller and achieving a comparatively cost-effective maintenance. The problem is solved according to the invention in that a first centrally disposed, axially extending flow channel (11 and a second centrally disposed, axially extending flow channel (12) are present in each roller module (2, 3, 4), that flow channels (15, 16) are disposed in the region near the surface of each roller module (2, 3, 4), and that connecting channels (17) connect the respective flow channels (15) to the first separate flow channel (11), and that connecting channels (18) connect the respective flow channels (16) to the separate second flow channel (12).
摘要:
The invention relates to a device for coupling a coolant supply to a roller (2), in particular for continuous casting installations, the roller (2) being mounted in a pillow block (4) by means of roller bearings (5) via journals (3) and wherein the roller can be supplied with a coolant via an axial roller borehole (6) guided through the journals (3), having a sealing unit which can be fixed to the roller journal (3) to couple it to the axial roller borehole (6) in a pressure-tight manner, preferably in form of an elastic sleeve, and a pillow block cover (9) which can be fixed to the pillow block (4) in order to cover the axial roller borehole (6) and which has at least one coolant duct (11; 12) being connectable to the coolant supply.
摘要:
The invention relates to a strip guide for a strip casting unit, comprising at least two segments, in particular roller segments (1-4), each with a strip input side (2.1) and a strip output side (3.1) and a pair of roller supports, each with a number of support rollers (5), running along a support region. The roller supports are adjustable by means of, in particular, hydraulic adjuster units (8). According to the invention, the strip guide can be more flexibly embodied and the assembly and disassembly times reduced, whereby a mechanical connection (9) is provided between neighbouring segments (1-4) and, on fitting a cylinder pair (8.1-8.4) to the strip input side (2.1) of a segment (1-4), the adjustment movement occurs both on said side (2.1), as well as simultaneously on the strip output side (3.1) of a previous segment connected thereto. On fitting a cylinder pair (8.1-8.4) to the strip output side (3.1) of a segment (1 4), the adjustment movement thereof affects said side (3.1), and simultaneously the strip input side (2.1) of a subsequent section connected thereto.
摘要:
The invention relates to a roller device (1), in particular for forming a strand guiding section (100) of a casting machine, comprising a cross beam (30) and at least one roller element (10) supported on the cross beam (30) by means of roller bearings (20, 22), wherein guiding means for at least three different media are provided in the cross beam (30).