Abstract: A roll assembly for use in rolling a wire rod includes an arbor which has a slightly tapered periphery at the middle portion thereof, a liquid pressure applying channel provided in the arbor extending to the tapered periphery, a cemented carbide sleeve securely fitted about the tapered periphery, opposing tightening means securely holding the sleeve by constricting it at around both ends, and a roll neck bearing mounted around each end portion of the arbor.For assembling the roll assembly, liquid pressure is applied through the channel provided in the arbor so as to form a liquid layer between the sleeve and tapered periphery of the arbor.

Abstract: The frame (2) of a rolling mill has a U-shaped mounting (12) for receiving and locating rolling stands (8). A pivoted limb (12a) of the mounting can be swung down to form a bridge between the frame (2) and a change-over trolley (5) for the purpose of transferring the stands between the frame and the trolley by means of draw-and-thrust-rods 15.

Abstract: A one-way clutch having radially movable sprags is utilized to repair a drive assembly including a carrier which drives an output gear through the one-way clutch with the worn surfaces on the carrier and the gear being ground down a total of 0.006 inches with the sprags adapting to the resulting spacing by appropriate radial movement.

Abstract: The invention relates to a method of removing a slewing ring (3) from a pedestal-mounted crane (2). A carriage (14) is positioned on a pair of elongate guide members (9) which lie substantially parallel, both to one another and to the plane of the slewing ring (3), and which extend alongside the pedestal (14). The crane (2) is raised relative to the pedestal (4) by means of jacks (7) and the carriage (14) is moved to a position beneath the crane (2). The slewing ring (3) is then positioned on the carriage and withdrawn on the carriage from beneath the crane.

Abstract: A forming machine (10) is disclosed as including a rotary drive mechanism (30) that provides accurate control of the degree to which forming is performed. The drive mechanism includes a pair of drive members (34) mounted for movement with a pair of elongated dies that are preferably embodied as die racks (22, 24) mounted on lower and upper bases (12, 14) of the machine. A toothed drive gear (32) is meshed with drive teeth (52) on each of the drive members and is rotatably driven by a drive spindle to thereby move the drive members and hence the dies in order to form a workpiece mounted between the dies. The drive mechanism has particular utility in a machine for forming a thin-walled annular sleeve of a workpiece mounted on a toothed mandrel (38) between the dies. An automatic loader is preferably utilized to mount the workpiece on the mandrel such that movement of the dies engages the die and mandrel teeth with the workpiece sleeve therebetween in order to provide the forming.

Abstract: A twist roller guide having a minimized overall length, including a guide box, a twist guide member having a twisted through hole for giving preliminary twist to the stock passing therethrough, and a roller holder consisting of a hollow cylindrical body portion and a pair of bearing plates extending forwardly therefrom to support a pair of twist rollers therebetween. The twist guide member consists of an enlarged head portion defining an inlet opening therein and a tubular body portion, the head portion being fitted in a bracket portion of the guide box formed adjacent to the rear end thereof. The body portion of the twist guide is fitted in the hollow cylindrical body portion of the roller holder, which is firmly supported in another bracket portion of the guide box formed adjacent to the front end thereof. The twist guide is beveled at the top and bottom of its exit end face so that it may be placed quite close to the twist rollers.

Abstract: A die assembly comprises a steel casing shrink-fitted onto and holding a ceramic die nib for extruding, drawing, ironing and the like of ferrous and nonferrous metal stock, especially in hot workable condition. The assembly includes an interlayer between the nib and casing to accommodate imperfect dimensional mating of adjacent shrink-fitted surfaces of the nib and casing. The interlayer is composed of all-crystalline ceramic material having a heating liquidus temperature within the range of 500.degree.-570.degree. C. Rigidity of solidified interlayer maintains uniform shrink-fitted compression on nib during usage of the assembly. Nib and preferred lead-zinc-borate devitrified glass interlayer are easily, jointly removable from casing and leave casing clean for reuse without affecting its case-hardening properties.

Abstract: A new rolling mill configuration providing improved performance and lower cost than is possible for conventional four-high and six-high mills.This mill configuration contains eighteen rolls and may be described as an improved six-high arrangement, the improvement being in the provision of side support assemblies for the work rolls, thus enabling smaller work roll diameters to be adopted than is possible with four-high or six-high mills, resulting in lower separating forces and thus a lighter and less expensive mill construction for a given duty.

Abstract: A machine for forming corrugated plate from a flat sheet defined by a plurality of serially arranged corrugating stands. At least one stand has cooperating corrugating rolls defined by a plurality of disc shaped dies which, during corrugating, are rotated at differing rates so that the peripheral speed at a selected diameter, of each such disc substantially equals the linear speed of the plate being corrugated. The discs can be constructed of disc shaped die halves, the axial position of which can be varied so as to vary the corrugation pitch or the profile while maintaining the pitch constant. Drives for the corrugating rolls and, in particular, for the disc dies can power rotate all dies or only some of them while others are free wheeling.

Abstract: To operate a rolling mill to roll metal strip with a satisfactory degree of flatness, signals from tension detecting means located downstream of the mill rolls are used continuously to determine the best symmetrical parabola which fits the shape of the strip and a parameter of the parabola is used to bring about an adjustment of the bending of the mill rolls in such a sense as to change the parameter substantially to zero. Signals from the detecting means may be used in addition to control the steer of the mill and adjust the temperature of the roll assemblies along their length.

Abstract: The mill includes a stand on which at least three work rolls are mounted. At least two of the work rolls are secured in the roll housing chocks and provided with a drive means. The rolls rotate in opposite directions at different peripheral speeds increasing along the passline. At least one work roll is provided with a screwdown. The mill according to the invention for rolling metal strip is characterized by the axis of the middle work roll being offset with respect to the plane passing through the axes of the extreme work rolls towards the point where the metal strip being worked enters the first pair of work rolls, formed with the middle and the first extreme work rolls, as viewed in the direction of the passline, and towards the point of the metal strip emergence from the second pair of work rolls, formed with the middle work roll and the second extreme work roll.

Abstract: A steel flanged wheel rim includes a pair of hollow ears extending radially and outwardly at the side edges of the rim, a semi-circular recess between the ears and a flange extending radially and inwardly from the center of the recess. The steel flanged wheel rim is produced by plastically processing through a series of shaping rolls in different processing stages and then bending the band into a ring shape to thereby continuously produce steel flanged wheel rims.

Abstract: The present invention is for the purpose of measuring the increase in growth or length of a sheathed heating element as it is reduced in transverse size to compact the refractory material therein, and feeding the growth to a logic control unit which is preset by an operator to obtain the desired final target length of the element within acceptable limits. The logic control unit, by computation, automatically subtracts the growth length from a preset length growth reference and makes the necessary additional computations that will send the proper signal to a motor control unit. The motor control unit translates the signal fed to it and in turn sends a signal to operate stepper motors, the latter controlling the bight between final compression rolls to compress the element just enough to elongate it within the target length range.

Abstract: A cold sheet metal forming apparatus in which the forming rolls are held at each end by bearing housings in each case held by screw-threaded rods engaging the housings and being secured directly to a main supporting frame.Such an arrangement leaves additional room between adjacent pairs of rolls and a second set of rollers are nested between the first set also with the simplified support arrangement at each end of each roll so as to allow a second rolling line to be kept in position and available for prompt use without as has hitherto been the case the necessity to change rollers.

Abstract: In a method for simultaneously cutting three continuous double-comb components from a metal strip the strip is moved forward stepwise. At each stop, a row of notches is made along each edge to form teeth and a row of crosses is removed from its central part, the crosses being made up of two portions of the central part and two teeth facing notches and separated therefrom by a portion of the central part. After the teeth have been bent, the comb-shaped components can be used to reinforce rubber packing or linings, more particularly in the car industry.

Abstract: An apparatus for actuating a tube guide expander device inserted in a tube end and extracting it therefrom subsequent to tube expansion induced by guide-expander actuation. The apparatus includes inner and outer sleeve structures which are independently axially displaceable relative to the tube and guide-expander. The outer sleeve structure is engageable with a first compression structure of the device to secure it and its engaged tube in place during relative axial displacement of a second compression structure of the device.Selectively coupling the inner sleeve structure to the device's second compression structure and axial displacement of both axially compresses a radial expansion element situated between the compression structures and expands the enclosing tube.

Abstract: A tube coil of austenitic or ferritic material is bent into a coil with a steep pitch by clamping the end of the tube section to be bent in clamps located at the ends of two radial arms of the bending apparatus. One arm is then pulled away from the other arm to cause the clamped ends to displace relative to each other while a steeper pitch is imparted. The pulled arm is free to rotate while the clamps are free to pivot in planes tangential to the tube coils. In one embodiment, the clamps can also move radially of the supporting arm.

Abstract: The invention relates to a process for automatically controlling the shape of sheet metal produced in a rolling mill, and to apparatus for carrying out the process. The shape of the sheet is sensed by a shapemeter, and each segment of the shapemeter provides an output indicative of the shape of the portion of the sheet passing over that segment. In accordance with the invention, the outputs are converted to electrical signal levels, such as current or voltage levels, and certain ones of the signal levels are averaged, and the averages are compared either with certain other signal levels, or with certain other averages. If the comparisons yield a difference greater than predetermined tolerance levels, control signals are generated to control parameters of the rolling mill.

Abstract: The flatness of metal strip being rolled in a hot strip mill is improved by applying higher than normal interstand tensions with maximum permissible tensions being based upon preestablished maximum allowable width reductions due to interstand tensions. The relationships between interstand tension and interstand plastic deformation are predetermined functions of strip material properties, strip temperature, and assumed tensile stress distribution across the strip width.

Abstract: A heat exchanger assembly of the type having a heat transfer core element which includes a plurality of fins in parallel stacked relationship for defining heat transfer surfaces and a plurality of fluid carrying tubes extending transversely through the fins for defining a fluid circuit, the assembly including at least one tube-to-tube joint, the improvement comprising a solderless connection at the tube-to-tube joint wherein one of the tubes includes an end having an annular, outwardly extending shoulder followed by an inwardly tapered flared portion for receiving the outwardly tapered portion of the other portion and the other of the tubes including an end having an outwardly flared portion for receiving the outwardly tapered portion of the other tube end and an inwardly directed flange clinched over the shoulder of the other tube end to produce a solderless mechanical connection between the two tubes.