An apparatus (100) for cooling long products is provided, the apparatus (100) having a coolant supply line (42) for supplying a coolant and a plurality of cooling devices (70), each connected to the coolant supply line (42) via an individually adjustable control valve (90), whose coolant delivery depends is each case on a degree of opening of the respective control valve (90), so that distribution of the coolant delivery along the travel direction can be flexibly adjusted by individually setting the degrees of opening of the control valves (90).
A loading device for loading a roll may be connected without play to a roll shaft and may be supported by at least one bearing in a roll stand for rolling metal rods, bars, wires, or pipes from a roll or stock material, and a roll stand comprising such a loading device. The loading device may be configured to exert a force for calibrating a position of the roll in the roll stand, which may simulate a load on the bearing during rolling by applying the force to the roll or roll shaft.
The present invention relates to a rack change system for changing of roller racks of a rolling block with a rail system along which change carriages can be moved, wherein the rail system includes a first track and a second track, which extend in different directions and are connected to one another via a switch, wherein the first track runs parallel to the rolling line of the rolling block, wherein a roller rack can be moved from the rolling block to the change carriage or a roller rack can be moved from the change carriage to the rolling block when the change carriage is standing on the first track and/or on the switch.
The invention relates to a device for moving a roll stand into or out of a roll stand receptacle of a rolling line, comprising a carrier element for entraining an entrainment element of a roll stand and a conveying element, wherein the carrier element is moved along a predetermined curved path.
B21B 31/08 - Interchanging rolls, roll mountings, or stand frames
B21B 31/10 - Interchanging rolls, roll mountings, or stand frames by horizontally displacing
B21B 13/10 - Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process all axes being arranged in one plane
5.
ROLL STAND, ROLLING TRAIN, AND USE OF SAID ROLL STAND AND/OR SAID ROLLING TRAIN FOR REDUCING RODS AND/OR TUBES
Disclosed is a roll stand comprising at least two rolls (1) which are designed and arranged so as to form a pass for rolling rod-shaped or tube-shaped rolling stock (2) and so that the rolling stock passes in a rolling direction W during operation, wherein the roll axis A of at least one roll (1) is not coplanar or parallel to a plane to which the rolling direction forms the normal.
B21B 17/14 - Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling without mandrel
6.
METHOD AND DEVICE FOR MEASURING THE TENSILE FORCE ACTING UPON A MOVING PIPE, OR A MOVING ROD
The invention relates to a regulating method for a rolling mill for rolling a pipe or a rod (6) moving into a moving direction, comprising the following steps: - determining the speed of movement of the surface of the pipe or rod in the moving direction on a first measuring device (8) (first measured value), and - determining the speed of movement of the surface of the pipe or rod in the moving direction on a second measuring device (9) disposed in the moving direction downstream of the first measuring device (second measured value), and - determining an input variable for a regulator based on a comparison of the first measured value to the second measured value.
B21B 38/06 - Methods or devices for measuring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring tension or compression
Disclosed is a method for operating a shaping device (1) which allows a metallic material (4) to be shaped into a metal bar (2) and comprises at least one first processing block (3). A measuring head (6) of a measuring instrument is provided at the end at which the shaped metal bar (2) is discharged from the processing block (3) in order to determine the speed at which the metal bar is conveyed. In said method, the speed at which the metal bar (2) is conveyed and which is determined using the measuring instrument, or a difference in speed between the conveying speed determined by the measuring instrument (7) and the initial speed at which the material (3) is conveyed that is to be shaped into the metal bar (2) and which is determined by another measuring instrument, is compared with a desired value, and a predefined instruction to act in order to prevent a plug from forming or protect the plant in case a plug has formed is followed when the conveying speed or the difference in speed deviates from the desired value by a predefined measure.
B21B 1/16 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling wire or material of like small cross-section
B21B 37/00 - Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
8.
METHOD AND DEVICE FOR ROLLING A PRODUCT TO BE ROLLED IN A ROLLING MILL HAVING A CROSS-ROLLING MILL
The invention relates to a rolling mill for rolling product to be rolled (6), having a planetary cross-rolling mill (20) and a subsequent further rolling mill in the rolling direction, the subsequent mill comprising a mandrel rod (10) having a length that is larger than the distance between the planetary cross-rolling mill (20) and the further rolling mill in the rolling direction.
A rolling stand includes at least one roller having a roller journal which is rotatably supported by an eccentric bushing which in turn is rotatably supported by a low-friction bearing unit. An adjusting mechanism exerts an adjusting force on the eccentric bushing for rotating the eccentric bushing with respect to the housing and maintaining the eccentric bushing in a desired position. In order to determine a rolling force in the rolling stand, the eccentric bushing is rotated to a desired position relative to the housing by the adjusting mechanism, and an effective adjusting force in the adjusting mechanism is measured when the eccentric bushing is held in the desired position. The rolling force can then be ascertained on the basis of the measured adjusting force.
GOLDEN DRAGON PRECISE COPPER TUBE GROUP INC. (China)
Inventor
Bindernagel, Ali
Teyke, Rötger, Lothar
Zhibin, Wang
Xigang, Zhang
Abstract
The present invention discloses a method for manufacturing a tube of copper or copper alloy (1), including: a) removing a surface oxidation layer from a tubular blank; b) rapidly rolling said tubular blank by means of a four-planet rolling mill (2, 6, 7) ; c) rapidly cooling down said tubular blank; d) linearly drawing the cooled-down tubular blank with a linear drawing equipment. In said manufacturing method, a four-planet rolling mill with a relatively strong strength is utilized. It provides a faster rolling speed, which is about three times of that in the prior art . Consequently, huge deformation heat is produced. A two-stage cooling down is subsequently carried out so that the recrystallization process of the coarse casting structures may be accelerated. The grains after recrystallization are small and uniform, with sizes of 0.010-0.040mm. Meanwhile, the drawing process for the tubular blank may reduce the defects on the tubular surface.
B21B 23/00 - Tube-rolling not restricted to methods provided for in only one of groups , e.g. combined processes
B21C 1/22 - Metal drawing by machines or apparatus in which the drawing action is effected by means other than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, rods or tubes specially adapted for making tubular articles
patents
