Abstract:
A hot-rolling machine (1) for wire rods and the like which comprises a number of rolling units (2) that are arranged in cascaded to one after another along the wire-rod feeding path (p) so that each rolling unit (2) can plastically deform the high-temperature wire rod (b) that moves along said path (p); each rolling unit (2) being provided with: a rolling stand (3) that is arranged on the wire-rod feeding path (p) and is provided with two counter-rotating and opposed milling rollers (4) that are arranged one beside the other, locally substantially parallel and substantially tangent to one another so as to form/delimit a rolling groove or throttling (4a), through which the wire rod (b) to be hot-rolled is forced to pass; and a mechanical gear reduction unit (5), which is arranged beside the rolling stand (3) and is structured so as to be able to drive simultaneously in rotation the two rolls (4) about the respective longitudinal axes (L); the mechanical gear reduction unit (5) of each rolling unit (2) being structured so as to form, with the corresponding rolling stand (3), a single sectional elementary module (2) that is structured for being aligned with other similar sectional elementary modules (2), along the wire-rod feeding path (p) and for being mechanically coupled to the immediately adjacent sectional elementary modules (2), in so as to compose/form a catenary of rolling units (2 which are reciprocally connected so as to transmit torque in cascade from one another.
Abstract:
A finishing monoblock for a billet lamination plant of the type comprises a plurality of lamination cages (G1Gn) arranged in sequence suitable for forming a lamination line and actuated by a pair of mechanical transmissions (22, 22') actuated through at least one command reducer (23) for the lamination of the billet. According to the invention, said monoblock comprises at least one first module (M1) and a second module (M2', M2''), of which at least one is disengageable from the lamination line through a pair of detachable joints (40).
Abstract:
A rolling monoblock comprises: a first block (Bl) of rolling stands (Gl-Gm) and a second block (B2) of rolling stands (Gm+l-Gn) . According to the invention, an annular path (A) of cooling of the rolled section (11) is foreseen between the two blocks (Bl, B2) .
Abstract:
A wire rod rolling line in which the rear stages of a group of finishing rolling mills are formed by the combination of a plurality of 4-roll mills and which is extremely high in operation rate, capable of expanding the size free rolling area and forming a path schedule in which an upstream path schedule is simplified is formed so as to shorten a line stop time for mill adjustment, characterized in that the last three units of mills of the group of the finishing rolling mills are the 4-rolling mills, these three units of mills are arranged in series with their rolling down direction shifted by 45 DEG , and the last two mills are driven by a common motor and driven separately from the 3rd 4-roll mill as counted from the last stage.
Abstract:
A rolling mill has a power source (10) driving a common drive shaft (11) which in turn drives gearboxes (12 to 15). Each gearbox drives a respective shaft (16 to 19) which in turn drives a roll (20 to 23). A free wheel (24) is provided between the gearbox and forming surface of its associated roll.
Abstract:
Verfahren zur Herstellung eines, insbesondere aus Stahl bestehenden, Blechprofils (1, 32, 33, 37, 40) für eine Schubladen-Ausziehführung (2) mit zumindest einem von einer ebenen Fläche (3, 43, 44, 45) des Blechprofils (1, 32, 33, 37, 40) seitlich, insbesondere senkrecht, abstehenden und sich in Längsrichtung (4) des Blechprofils (1, 32, 33, 37, 40) erstreckenden Steg (5, 35, 36, 38, 39, 41, 42), wobei in einem ersten Verfahrensschritt aus wenigstens einer ebenen Fläche (3, 43, 44, 45) eines Blechstrangs (6) zumindest ein seitlich, insbesondere senkrecht, abstehender und sich in Längsrichtung (4) des Blechstrangs (6) erstreckender Steg (5, 35, 36, 38, 39, 41, 42) herausgequetscht wird, und der zumindest eine Steg (5, 35, 36, 38, 39, 41, 42) in wenigstens einem weiteren Verfahrensschritt, vorzugsweise in 10 bis 15 weiteren Verfahrensschritten, zusammengequetscht wird, d.h. in seiner Breite (7) reduziert und in seiner Höhe (8) vergrößert wird. Es wird ausserdem ein dadurch hergestellte Blechprofil sowie eine Schubladen-Ausziehführung, die ein solches Profil aufweist beschrieben.
Abstract:
A wire rod rolling plant constituted by three distinct, independent rolling units (10, 20, 30), wherein there are provided four rolling stands, arranged in oval-round- oval-round sequence, in the first two rolling units, and there are provided at least two rolling stands, in oval-round sequence, in the third rolling unit. One motor (12, 22) is provided in the first two rolling units (10, 20) for actuating the two round steps arranged in even positions and one motor (11, 21), independent from the first one, is provided for actuating the two oval steps arranged in odd positions. Two motors (31, 32), mutually independent, which actuate each rolling step respectively are provided in the third rolling unit.
Abstract:
A finishing monoblock for a billet lamination plant of the type comprises a plurality of lamination cages (G1Gn) arranged in sequence suitable for forming a lamination line and actuated by a pair of mechanical transmissions (22, 22') actuated through at least one command reducer (23) for the lamination of the billet. According to the invention, said monoblock comprises at least one first module (M1) and a second module (M2', M2''), of which at least one is disengageable from the lamination line through a pair of detachable joints (40).
Abstract:
A modular rolling mill includes a plurality of rolling units arranged along a mill pass line, each rolling unit being independently driven by a dedicated motor and drive train; and clutches for selectively coupling and de-coupling the drive trains of successive pairs of rolling units.