Abstract:
A device for supporting and oscillating continuous casting molds in continuous casting plants includes at least one support suitable to support a continuous casting mold, the support including a fixed assembly restrained to a frame of the device and a movable assembly that is slidably restrained to the fixed assembly in a vertical direction and connected to a servomechanism suitable to move it in a reciprocating manner relative to the fixed assembly along the axial direction, the movable assembly including a plurality of channels suitable to allow a flow of a cooling fluid to and from a cooling circuit of the mold, the channels being supplied by supply pipes arranged along the vertical direction. The device further includes at least one connecting pipe suitable to allow to connect a supply pipe, the connecting pipe having a T shape and including a first duct rigidly connected to the movable assembly in a horizontal direction, as well as a second and a third duct extending from the first duct in opposite ways along the vertical direction, the second and third ducts being respectively connected to first and second end portions of the fixed assembly through further axially deformable ducts and being respectively a blind duct and a flow-through duct suitable to allow the cooling fluid to flow towards the first and the second ducts. The second and third ducts, and preferably also the first duct, of the at least one connecting pipe have the same diameter of the supply pipes.
Abstract:
A device for supporting and oscillating continuous casting moulds in continuous casting plants comprises at least one support suitable to support a continuous casting mould, said support comprising a fixed assembly restrained to a frame of the device and a movable assembly that is slidably restrained to said fixed assembly in a vertical direction (A) and connected to a servomechanism suitable to move it in a reciprocating manner relative to the fixed assembly along said axial direction (A), said movable assembly comprising a plurality of channels suitable to allow a flow of a cooling fluid to and from a cooling circuit of said mould, said channels being supplied by supply pipes arranged along the vertical direction (A). The device further comprises at least one connecting pipe suitable to allow to connect a supply pipe, said connecting pipe having a T shape and comprising a first duct rigidly connected to the movable assembly in a horizontal direction (B), as well as a second and a third duct extending from said first duct in opposite ways along the vertical direction (A), said second and third ducts being respectively connected to first and second end portions of the fixed assembly through further axially deformable ducts and being respectively a blind duct and a flow-through duct suitable to allow the cooling fluid to flow towards the first and the second ducts. The second and third ducts, and preferably also the first duct, of the at least one connecting pipe have the same diameter of the supply pipes.
Abstract:
Oscillating table for thick slab production plants, comprising pairs of bars (8, 8′, 9, 9′), lying on at least one horizontal plane, which constitute the elastic support elements of the ingot mould (3), thus permitting an optimal guiding of the oscillation thereof exclusively in the casting direction (x), said pairs of bars (8, 8′, 9, 9′) constituting a tie rod-strut system working in bending that confers to the table very high torsional and lateral stiffness. It allows a high ingot mould (3) guiding precision thus consenting, for example, wide oscillations exclusively in the axial casting direction.
Abstract:
A device for the support and oscillation of a continuous casting mould (1) for casting liquid metal, particularly liquid steel, comprising guide elements (4) which are mounted on fixed carrier components (5) and which is actually by means of oscillation devices (6). In order to shorten time required for mounting and dismounting and therefor to lower the down times and costs of said continuous casting device, a first module (7) is made of guide elements (4) and carrier components (5) and a second module (8) consists of the oscillation device (6). The second module (8) can be dismantled via an outlet (9) which extends laterally, perpendicular to the plane of symmetry (2) below the guide elements (4) or in between guide elements (4). Each of the two modules (7,8) can be dismounted or re-mounted in a manner which is temporally and locally independent from the other respective module (7,8).
Abstract:
A continuous casting mould comprises a mould tube (12), a mould jacket (24) surrounding the mould tube (12), a cooling system (26) within the mould jacket (24) for cooling the mould tube (12), an oscillating lever (40) supporting the mould tube (12). The oscillating lever (40) is capable of oscillating about a pivoting axis (45) substantially perpendicular to a casting plane containing the casting axis (20) for transmitting mechanical oscillations to the mould tube (12). An oscillating mould cover (30) associated with the top end of the mould jacket (24). The mould tube (12) is supported with its upper end by the oscillating mould cover (30), and is itself pivotably supported by the oscillating lever (40) outside of the mould jacket (24). A sealing element, e.g. an annular lip seal (90), provides sealing between the oscillating mould cover (30) and the top end of the mould jacket (24).
Abstract:
A device for the continuous casting of metals, especially steel material, to elongated products in a multistrand casting apparatus with a plurality of continuous casting molds which are oscillatingly driven in an oscillating frame (2) by means of leaf springs (4) whereby the leaf springs (4) extend transversely to the casting direction (1) and serve for guide and weight compensation. The smallest possible strand spacing “A” is provided for that on a longitudinal foundation frame (5) to housings (6a) in the form of compact flat cassettes (6) are secured one behind the other in the strand travel direction. In the housings upper and lower leaf spring pairs (4a; 4b) run transversely to the cast strands (3) and the oscillating strands (11) engage the leaf spring pairs (4a; 4b), whereby a front oscillating drive (11a) works synchronously with the rear oscillating drive (11b).
Abstract:
A device for continuously casting steel includes a continuous casting mold supported in a lifting table and oscillating in the casting direction and at least one oscillation drive acting on the lifting table. The lifting table is constructed with guide blocks extending underneath the plane of the table and a stationary clamping block is arranged between the guide blocks. At least two individual resiliently soft plate springs are mounted along the short sides of the mold underneath the table plane in both sides of the clamping block and extending between the clamping block and the adjacent guide block, wherein the plate springs are arranged at a distance one above the other and so as to extend parallel relative to the corresponding plate springs arranged at the opposite short side of the mold.
Abstract:
Recess portions each comprising one or a plurality of transverse grooves or a large number of dimples are disposed below the lowermost position of a meniscus under a steady operation state within a distance of 200 mm on the inner peripheral surface of the casting mold so that a solidified shell is gradually cooled and the cooling capacity of each inner surface of the casting mold is substantially inform.
Abstract:
Method and device to obtain vibrations in the walls of the crystalliser (11) in an ingot mould (10) by use of actuators, the ingot mould (10) including a channel use (13) for the circulation of cooling liquid, the ingot mould (10) being associated with a conventional system of oscillation, there being induced on the crystalliser (11) vibrations of small amplitude and high frequency and acceleration obtained by exciting an actuator (16) comprising an element in magnetostrictive alloy (18) arranged in cooperation with at least one face of the crystalliser (11) itself, the element in magnetostrictive alloy (18) being excited by an electromagnetic field.
Abstract:
The invention relates to a process for operating a guided vertical mold, especially for the continuous casting of a steel billet, which is oscillated by a lifting device. According to the invention, the driving force (F), the lift position (x) and/or the lifting speed (v) of the mold are detected by measurement technology, and a mold lifting movement is preset in a computer model as a target variable. Finally, a difference of the mold lifting movement, representing the measure of frictional force between the billet and the mold, is fed as a control variable to actuators by means of a circuit arrangement.