163results about "Tensioning/braking arrangements" patented technology

A method and apparatus is disclosed for decelerating and temporarily accumulating a hot rolled product moving longitudinally along a receiving axis at a first velocity V1. The product is directed through a curved guide having an entry end aligned with the receiving axis to receive the product, and an exit end spaced radially from the receiving axis and oriented to deliver the product in an exit direction transverse to the receiving axis. The curved guide is rotated about the receiving axis in a direction opposite to the exit direction of the product and at a speed at which the guide exit end has a velocity V2, thereby decelerating the product being delivered from the guide exit end to a reduced velocity V3 equal to V1−V2. The curvature of the guide and the orientation of its exit end is such as to form the delivered product into a helix deposited and temporarily accumulated on a cylindrical drum. The drum is rotated in a direction opposite to the direction of rotation of the curved guide to thereby unwind the product from the drum.

An apparatus for rolling of a powder metallurgical metallic workpiece is provided having a feeding device, a first induction heating apparatus in operable communication with a first RF generator and at least a first hot rolling mill. A process control device monitors at least one parameter of the first RF generator and outputs a signal. A method for continuous rolling of a metallic workpiece is also provided using the apparatus for rolling. The process control device signal can be used to monitor metallurgical properties of the workpiece and provide in-line evaluation of the workpiece.

A pinch roll unit for either propelling or retarding a product moving along the pass line of a rolling mill comprises a pair of levers mounted for rotation about parallel first axes. Roll shafts are carried by the levers with each roll shaft being journalled for rotation about a second axis parallel to the first axis of its respective lever. Pinch rolls are carried by the roll shafts and are positioned to define a gap therebetween for receiving the product. An electrically powered first motor operates via a linkage to rotate the levers about the first axes and to move the pinch rolls between open positions spaced from the product, and closed positions contacting and gripping the product therebetween. An electrically powered second motor rotatably drives the pinch rolls.

The invention relates to a compact, flexible CSP facility (1,101,201,301,401) for continuous, semi-continuous and batch operation, comprising a casting machine, a roughing stand group (7,111,211) and a finishing stand group (12,118,218), wherein a coil store (8,113,213,501) which stores the rough strip or slab coming from the roughing stand is integrated in the roller table for batch or semi-continuous operation, wherein the coil store is deactivated in continuous operation. The coil store (8,113,213,501) is designed to hold an increased quantity of rough strips or slabs in such a way that two, three or more rough strips or slabs can be wound onto a coil to form jumbo coils.

Compact plant for making steel bars and profiles with which, starting from the scrap, it is possible to obtain the finished product, for example bars with commercial length from 6 to 18 meters, pre-packed, packaged and ready for sale, with all the stations placed in line and operating continuously. All the stations are arranged in reduced spaces, thereby reducing both investment costs and plant management costs, and decreasing production times. Advantageously, the plant of the invention incorporates an extremely compact bar packaging apparatus which, through an innovative arrangement and innovative operating method of the components thereof, allows a further reduction in length.

The invention relates to an industrial plant (1), to a controller and / or regulator (5), to a machine-readable program code (7), to a storage medium (6), and to a method for controlling and / or regulating a slipping motion of a roller (3, 3-1, 3-2) relative to a strip (B), particularly a cold strip to be processed in a metal processing unit, said strip being guided through a roller interconnection (2) comprising the roller (3, 3-1, 3-2) and at least one further roller (3, 3-1, 3-2) at an adjustable strip speed. By monitoring (21) the occurrence of the slipping motion by means of detecting at least one technical operating variable of the roller (3, 3-1, 3-2), and due to the fact that with the occurrence of a slipping motion of the roller (3, 3-1, 3-2), a current circumferential speed of the roller (3, 3-1, 3-2) and / or of at least one of the at least one further roller (3, 3-1, 3-2) and / or of the strip speed is changed (24, 25, 26, 27, 34) such that the current circumferential speed of the slipping roller (3, 3-1, 3-2) and the strip speed approach each other, it becomes possible to detect a slipping of a strip relative to a roller in a system, and to reduce or remedy the same, particularly during the operation of the plant.

Sets of tightening rollers form a feeder set (2) of tightening rollers and a delivery set (3) of tightening rollers. The feeder set of tightening rollers increases pulling action. The delivery set of tightening rollers decreases pulling action. Between the feeder set of tightening rollers and the delivery set of tightening rollers there can be a band-treatment device, e.g. rollers (4) / stretching devices. An independent claim is also included for a method for planishing / smoothing metal bands during rolling, aligning and / or stretching.

This invention relates to a rolling mill apparatus and a method of shape control of a rolled strip which enables satisfactory shape control even in extremely thin rolling. A rolling mill apparatus of this invention has a rolling mill, which rolls a rolled strip P between upper and lower work rolls; a shape detecting portion, which detects the degree of flatness of the rolled strip in the width direction of rolled strip which has been rolled by the rolling mill; a spray portion, having a plurality of spray nozzles arranged along the length direction of the upper and lower work rolls, which sprays the upper and lower work rolls with coolant C; and, a shape control portion, which adjusts the spray amount and / or temperature of the coolant C sprayed from the spray portion based on detected information from the shape detecting portion, to control the shape of the rolled strip P. The shape control portion has two control modes, in which the relationship of the detected information of the shape detecting portion and the spray amount and / or temperature of the coolant C sprayed from the spray portion are inversely proportional, and switches between these two control modes based on the strip thickness of the rolled strip P.

A thin steel strip is passed through a pinch roll stand comprising pinch rolls to a hot rolling mill comprising work rolls and backing rolls. In advance of rolling mill, the strip passes over support rolls. An anti-crimping guide roll located immediately in advance of the rolling mill is mounted on a pair of rocker structures so as to be rasiable from a lower inoperative position to lift the strip out of a straight line path so as to pass around the anti-crimping roll and to be wrapped about the upper work roll, that roll supports the strip and resists buckling of the strip and the generation of crimping defects.

A rolling apparatus includes a pair of small rolling roller and a large rolling roller which hold a ring with the ring being sandwiched therebetween, and which roll the ring, and a tension roller; a temperature sensor which measures a temperature of the ring before rolling; a storing portion which stores, in advance, a relation between the temperature of the ring and a temperature correction coefficient for correcting a condition for rolling; and a controller which changes the condition for rolling based on the measured temperature of the ring and the stored relation so as to perform rolling processing.

The invention relates to a method and to a device for producing a rolled metal strip from a molten metal by producing a cast metal strip in a strip casting device (5) and then rolling the undivided metal strip in a roll stand (18) to the final thickness of the strip. For controlling the course of the strip, strip guiding devices (19) are provided, especially upstream of the roll stand. In order to guarantee, with little components required, a stable insertion of the metal strip into the roll stand at the input side of the roll stand or at the site of rolling in accordance with the strip dimensions, the strip guidance interferes or is carried out at a distance of 1.0 to 10.0 times the strip width, preferably at a distance of 1.5 to 5.0 times the strip width, upstream of the roll stand.

Provided are a manufacturing apparatus with high drainability for a hot-rolled steel plate and a manufacturing method for a steel plate, in a hot-rolled steel plate production line. In a manufacturing apparatus for a hot-rolled steel plate, a last stand thereof has a pair of raised portions in a housing, and a cooling device has a plurality of upper surface cooling nozzle arrays which are arranged in a transfer direction and which inject a cooling water onto an upper surface of a steel plate, a plurality of lower surface cooling nozzle arrays which are arranged along the transfer direction and which inject the cooling water onto the lower surface of the steel plate, and an upper surface guide on the upper surface side of the steel plate. The end of the cooling device on the last stand side is arranged between the raised portions. When the uniform cooling width is (W), the average gap distance between the ends of the uniform cooling width and the raised portions is (Wsw), the gravitational acceleration is (g), the average water rate density at the uniform cooling width is (Qq), and the value determined from (Wsw) and the average distance (h) between the upper surface guide and the upper surface of the steel plate is (C), a predetermined relationship is satisfied.