Abstract: A coupling is provided in which a coupling member and coupling sleeve of a rotary coupling for coupling a drive transmission to a rolling mill stand input shaft have mating taper threads which provide torsional rigidity and facilitate quick engagement and release. Engagement and release are effected by slowly turning the coupling half by means of the drive transmission while a brake device engages dogs on the coupling half to prevent the latter rotating. The coupling sleeve is flexibly attached to the flange by sheet metal laminate compensating elements but mobility of the sleeve is restricted by a support element on a shaft extension.

Abstract: A rolling mill and method for rolling material having a rectangular, oval or like elongated cross-sectional configuration into rod or wire, has a line of passes of which the first pass is formed by two rollers and the remaining passes are each formed by three rollers, and wherein the first pass deforms the material, whose input cross section has a ratio of the lengths of its major and minor principal axes greater than about 1:2 to an output cross section which is exactly round or a regular polygon, such as square or hexagonal or which deviates from such a geometrical configuration only to an extent such that the ratio of the lengths of the major and minor principal axes of the output cross section does not exceed about 1:2.

Abstract: In the reduction of the cross section of wire, rods or bars by rolling, the work material is placed under longitudinal compression in a roughing block and/or in an intermediate block and is only under tension in a finishing block. By this means, the ends of the work material are thinned prior to entry into the finishing block, instead of being thickened as they would be if the work material were under tension in the roughing and/or finishing block. Compensation for this end thinning is effected in the finishing block due to the rolling under tension, so that wastage due to cropped thickened ends is avoided.

Abstract: The stand-to-stand transmission ratios between the working sizing passes at the entry end of a rolling block for rolling bars, rods or wire are fixed but are different from one another. This enables an entire range of finished workpiece cross sections to be obtained from a given first pass workpiece entry cross-sectional area, merely by omitting one or more of the working stands and shifting other working stands from one location to another and by changing only the stands of the finishing sizing passes at the delivery end of the block.

Abstract: An apparatus and method is provided for feeding, clamping and removing bar or tube goods in tube test presses which have a bearing surface consisting of several supporting crossbeams spaced parallel to each other, and at least two disk-like driven rotors having at least one hook-like peripheral projection spaced on at least one axis of rotation, where each axis of rotation runs crosswise to the crossbeams under their bearing surfaces, such that only hook-like peripheral extensions of the rotors project above the bearing surfaces for transporting and clamping the goods, the improvement comprising at least one tenterhook pivotable adjacent the bearing surface between a first position below the bearing surface and a second position above the bearing surface of the crossbeam and parallel to the rotor adjacent each rotor, and which, pivoted to said second position above the bearing surface during clamping, grips the goods on side opposite the adjacent rotor involved.

Abstract: A method and apparatus are provided for the rolling of bars, rods or wire to avoid thickened ends in which a number of rolling stands are provided in tandem forming a rolling line and in which one or more of the last rolling stands in the line have separate drive means with means to regulate the speed independent of the other rolling stands to provide momentarily increased speed and tension on the two ends of the material being rolled.

Abstract: A cooling bed for cooling and straightening rods or bars which are delivered hot from a rolling mill as side-by-side conveyor chains provided with projections between which pockets for the articles are defined. Reversal sprocket wheels at the infeed end are interconnected so that the pockets at the infeed end remain accurately in alignment, notwithstanding chain wear and differential expansion under the heat conditions. Reversal sprocket wheels at the discharge end are not drivingly interconnected, at least under normal operating conditions. Individual hydraulic drive motors drive the reversal wheels as shown or separate drive wheels which cooperate with the lower runs of the conveyor chains to keep the upper runs taut individually. The individually driven sprocket wheels are mounted with angular lost motion on a connection shaft to avoid one of the motors being overloaded under exceptional circumstances.

Abstract: A method for the manufacture of longitudinal-seam welded tubes of substantial thickness is provided in which a strip of steel is curled to form a longitudinally slit tube and the slit is welded in a longitudinal-seam welding plant and in which the seam-welded tube thus produced is fed into a tandem arranged reducing mill, in which it is rolled in the longitudinal direction of the tube between the stands of the reducing mill without being subjected to longitudinal tension while at the same time its external diameter is reduced. A longitudinal seam-welded tube made by the method is claimed.

Abstract: A rolling mill and method for single strand rolling of bar sections is provided having a plurality of successive in-line roughing roll stands on a pass line in which the last two roughing roll stands are radially adjustable transverse to the pass line to produce a rough bar having a cross section substantially the same at its finished section and a plurality of successive in-line finishing roll stands receiving the rough bar and rolling the same to finish condition.

Abstract: A rolling mill for rolling wire or rod product having a plurality of roll stands arranged one after the other, each having at least three driven rollers and in which the distance between at least two adjoining successive stands forming a group is not substantially greater than the roller diameter of the stands and the last sizing pass of each group of stands has a regular cross section in relation to the first sizing pass of the next following group.

Abstract: A rolling block for rolling a bar-shaped article having several rolling units mounted on a common frame, each rolling unit having three or more rollers journalled to respective pivotable elements and defining a sizing pass. For replacing the rollers, the pivotable elements can be swung about respective drive shafts from which the rollers are driven via step-up transmissions within the pivotable elements. The pivotable elements can be locked in their operative positions by hydraulically actuable coupling means and all the pivotable elements with the respective rollers therein can be fine-adjusted in the radial direction of the rollers.

Abstract: A tube push bench is provided having an elongated guide bed, a toothed rack mounted in the guide bed for longitudinal displacement thereon, a mandrel rod at one end of said toothed rack driven thereby for longitudinal displacement with said rack for moving a tubular bloom, at least three drive pinions engaging said toothed rack in close packed succession and drive means driving said pinions.

Abstract: Means are provided for adjusting the rotational speed of at least the first pass of a plurality of successive rolling mill passes by measuring the cross section of the work-material being fed to said first pass and adjusting the drive for at least said first pass responsive to said measurement so as to feed to the last pass of the successive passes a cross section which permits at least said last pass to operate at a rotational speed independent of the cross section of the feed material.

Abstract: A rolling mill structure is provided especially for wire and like products having a continuously operating casting unit providing a cast metal strand and a rolling mill receiving the strand, the rolling mill being installed on a sliding carriage that is capable of moving in and counter to the direction of rolling at a velocity (V.sub.W) between zero and approximately the maximum velocity (V.sub.G) of the casting strand emerging from the casting arrangement.

Abstract: A process and mill for stretch reduction rolling of tubes is provided having individually driven roll stands, said roll strands being driven so as to impart a maximum traction force, limited only by the transferability of frictional forces between roll and tube, on the tube in all the passes that grip said tube, at least in the passes at the entry end of the mill.

Abstract: A method and apparatus are provided for handling bar-shaped material, such as tubes, beyond a plant for manufacturing and/or machining same, comprising the steps of sub-dividing the material moving out of the plant by means of a severing device, sorting the cut lengths of material into at least two groups and feeding said sorted lengths to at least two cooling beds, conveying the cut lengths from the first cooling bed and subjecting them to substantially automatic continuous after-processing and conveying the cut lengths from the second cooling bed, after intermediate storage subjecting them at the second cooling bed to at least partially manual individual after-processing.

Abstract: An improved rolling mill capable of both stretch reducing tubes having relatively small external diameters and of reducing tubes having relatively large external diameters is provided having a plurality of successive roller stands some stands having small roll diameters and other stands having large roll diameters, the said other stands having large roll diameters being arranged to follow, in the direction of rolling, the said some stands having small roll diameters so that said other stands are at the exit end of the rolling mill.

Abstract: A multistand rolling mill for stretch reducing tubes is provided in which the first stands of a plurality of successive stands are operated to build up tension and at least one of said stands is provided with means for varying the roll speed to provide a desired speed step in those stands designed to build up tension.

Abstract: A stretch-reducing rolling mill is provided for selectively producing tubes of circular or angular configuration, such as a square, is provided in the form of a plurality of driven roll stands arranged in two groups, one at the entrance end being equipped with three roller stands and a second at the rear or exit end being arranged to use either three or four roller stands optionally, said first group of stands being driven by a common drive train separate and independent of the drive for the second group.

Abstract: A rolling mill is provided for rolling wire, light sections and tubular products having a fixed rolling axis and a plurality of roll stands arranged directly one behind the other and each of which has two driven work rolls extending parallel to one another and transversely of the rolling direction, said work rolls of each stand defining at least two sizing passes only one of which is located on the rolling axis at one time while the other sizing passes of the stand are interchangeably located away from the rolling axis and act as stand-by passes.