Abstract: A roll with rotating shell comprising a fixed support beam (2), a tubular shell (1) rotatably mounted on the support beam (2) about an axis, a plurality of shoes for holding the shell distributed side by side along the length of the beam in an axial bearing plane (P), each shoe (3) being slideably mounted radially between the shell (1) and the support beam (2) and connected to an arrangement (21, 33) of regulating thrust and to an arrangement (51, 55) of introducing continuously a lubricant into the gap (52) between the bearing face (31) of the shoe and the internal face (13) of the shell.

Abstract: A continuous mill plant for rolling steel plates having one or a plurality of rolling mills. The ratio of maximum rolling speed to minimum rolling speed of the plant is at least 3.0 but no more than 10.0 at the continuous rated output of an electric motor for driving the rolling mill.

Abstract: A rolling mill stand with work rolls which are supported as necessary by back-up rolls or by intermediate and back-up rolls. The rolls are axially slidable relative to each other. The bodies of the rolls are provided with alternatingly concavely and convexly shaped contours in such a way that the rolls supplement each other in at least one axial position of the rolls so that no gap exists between the rolls. Corrections of the roll gap between a pair of rolls can be carried out by relative axial displacement of the rolls. The contours of the rolls have in the neutral position thereof, in addition to a maximum inclination in the middle, maximum inclinations of the circumferential lines on both sides of the middle of the circumferential surfaces of the rolls in longitudinal direction of the rolls in which roll gap profile changes are to be effected.

Abstract: A supported ceramic roller and a method for production and use thereof is provided, particularly as a guide roller in a non-ferrous rolling mill. A ceramic roller member is attached to a backing member, preferably metallic, by an adhesive which has the characteristic of acting as a thermal/mechanical stress barrier. The sidewalls of the ceramic roller member extend radially outward of the support member.

Abstract: Pilger tooling for use in a pilgering machine includes an elongated stationary mandrel for supporting a tube thereon in position for cold reduction, and a pair of roller dies positioned along opposing sides of the mandrel and in oppositely-facing relation to one another for coacting with the mandrel in reducing the cross-sectional size of the tube. Each roller die is ring-shaped with a central opening for mounting the die on a shaft and has a keyway defined therein adjacent the central opening for receiving a key to secure the die for movement with the shaft. The keyway also provides a timing mark for accurately mounting the die on the shaft. Each roller die has two relief pockets formed in the periphery thereof in circumferentially spaced apart relation with a bridge extending therebetween, and a tube-reducing groove formed in the periphery thereof having a tapered configuration and opening at its opposite ends into the respective pockets.

Abstract: A roll assembly for a rolling-mill stand has a pair of axis-defining, coaxial, and axially spaced journals, respective roll supports carried in the journals and rotatable therein about the axis, and a roll ring engaged between the supports. The roll supports are each formed with a pair of radially spaced and separate annular surfaces both centered on the axis and the surfaces of one support are directed at least generally axially toward the other roll support. At least one of the surfaces of each pair is substantially frustoconical and forms with the axis a different angle from the other of the surfaces of the pair. One of the supports is formed at the axis with an axially extending passage and the roll ring is formed with generally axially oppositely directed pairs of annular surfaces respectively complementary to and flatly engaging the annular surfaces of the roll supports.

Abstract: To avoid impacts on the first pass of the rolled product through a universal rolling mill the vertical rolls of the rolling mill can be provided with their own integral drive according to our invention. In an electrical drive for a vertical roll the vertical roll is the rotor of an electric motor while the stator is a circular collar on a nonrotatable supporting axle for the vertical roll. In a hydraulic drive for a vertical roll a hydraulic motor is either located in a housing side extension of the structural member supporting the vertical roll to drive it from the outside by spur wheel gearing or by a frictional drive or the hydraulic motor is mounted in the nonrotating supporting axle of the vertical roll and engages on an inner cogged drive ring on the vertical roll from the inside by spur gearing positioned on a transverse plane.

Abstract: A tandem rolling mill is operated such that roll stands of an upstream stage of the mill adjacent to a strip inlet thereof are positioned relative to each other to effect a strip crown control or an edge drop control, while roll stands of a downstream stage of the mill adjacent to a strip outlet thereof are operated to axially shift the downstream stage work rolls cyclically to distribute roll wear and thermal crown in the axial direction thereof.

Abstract: A method and apparatus for rolling a taper in or out of a strip during reduction by a rolling mill, rolling a first portion of the strip by employment of a gaugemeter roll gap control system using a first value for the mill stretch above the natural mill stretch value for the mill and which value during the rolling of the first portion will be a fixed value, thereafter rolling a second portion of the strip in the same rolling operation by using a value for the mill stretch in the gaugemeter roll gap control system which will vary to effect a change in the roll gap and hence a change in reduction of the strip in which the second value may be a linear function.

Abstract: A drive for a pilger cold-rolling mill with mass and torque balancing, where the driven crank, rotating around a vertical axis, is connected via a coupler with a roller frame guided horizontally in a guide and where the coupler assumes, with its total mass, the balancing of momentum and where the crank, with its total mass, assumes the mass balancing. An additional mass M.sub.z, which is movable synchronously and parallel to the roller frame and where the center of gravity (S.sub.M) is lower than the virtual engagement point (S.sub.AG) of the centrifugal force of the crank balancing mass (MA), where the product of the force of inertia for accelerating the mass (M.sub.z) and of the vertical distance (b) between the center of gravity (S.sub.M) and of the mass (M.sub.z) and the engagement point (S.sub.AG) of the centrifugal force of the mass (MA) corresponds to the balancing mass moment obtained as a product of the force of inertia engaging at the center of gravity (S.sub.

Abstract: An inertia force balancing apparatus for a machine haivng a reciprocating heavy object, such as a Pilger rolling mill provided with a heavy object stand having a pair of Pilger mill rolls and horizontally supported such as to be reciprocable and with a drive device for imparting reciprocating motion to the Pilger mill stand by a motive power converted from rotational motion, into reciprocating motion. A spring device secured at its end to the heavy object and adapted to balance the inertial force of the reciprocating motion of the heavy object. A control device is provided for changing the spring force of the spring device in accordance with the rotational speed of the rotational motion of the drive device.

Abstract: Method of controlling a strip crown in a planetary mill line, comprising the steps of rolling a slab by using a shaped feeding roll or rolls before passing between planetary rolls to shape a slab profile in the direction of the width of the slab having a flat or curved central portion, opposite side end thicker than the central portion and side portions thinner than the central portion between the central portion and the opposite side ends and subsequently rolling the slab having such a shaped slab providing a planetary rolled strip having a substantially flat strip crown having a uniform thickness over the width of the strip.

Abstract: A rolling load signal is detected during a few rotations of a top and a bottom backup roll at different detection time points at which the top and bottom backup rolls are out of phase from each other and then are analyzed by Fourier analysis so as to detect the amplitudes and phases of the eccentricity of the top and bottom backup rolls separately, whereby the roll gap is controlled and the separately detected eccentricity of the top and bottom backup rolls is thus obtained. Even when there is a difference in roll eccentricity frequency between the top and bottom backup rolls and even when external disturbances exist due to the aging of the roll eccentricity and to the estimated errors of the mill constant M and the plasticity coefficient Q of a piece of metal to be rolled, the roll eccentricity can be suitably adjusted so that the roll eccentricity can be detected with a high degree of accuracy and then eliminated.

Abstract: A roll for use in the system of rolls of a calender has a stationary carrier which is surrounded by a deformable hollow cylindrical shell movable radially relative to the carrier and having end portions which surround and are rotatable relative to rings which are also movable relative to the carrier in the radial direction of the shell. The rings can be arrested in selected positions with reference to the carrier by pairs of hydraulic cylinder and piston units which are connected with the outlets of pumps or with the outlet of a single pump by conduits containing shutoff valves. Refilling devices are provided to compensate for leakage of fluid from the chambers. The shell is deformable by rows of hydrostatic supporting elements which react against the carrier and bear against the internal surface of the shell.

Abstract: A slab is successively fed between periodically moving press tools to reduce the slab in a widthwise direction. In this method, the leading and tail end portions of a given length in the slab are reduced at a reduced width wider than that of remaining steady portion.

Abstract: A roll stand has a stationary frame having a drive side and a service side, upper and lower working rolls having axially opposite ends at the sides, respective pairs of upper and lower journal blocks coupled with the ends of the rolls at the sides and a drive connected to the working-roll ends at the drive side for oppositely rotating the working rolls. Respective upper and lower pusher bodies are provided adjacent the journal blocks in the frame and respective upper and lower guides in the frame support the bodies for displacement of same only axially in the frame. Respective pairs of formations at least one of which is vertically elongated couple each of the bodies to the respective block for joint axial displacement while permitting relative vertical nonaxial displacement between the bodies and the respective blocks.

Abstract: The invention relates to the control of rolling mill backup roll eccentricity by combining the load carrying characteristics of rolling mill tapered roller bearing assemblies during rolling with prescribed levels of axial thrust to effect a controlled deflection of backup roll necks on a 4-high rolling mill or the like due to the selected thrust force applied axially to the ends or necks of the backup rolls. One reason for this is to effect a compensation in the eccentricity of the backup rolls due to roll grinding.

Abstract: A multi-pass rolling method and a multi-pass rolling-mill stand best adapted to carry out said multi-pass rolling method. In a rolling-mill stand having three or more work rolls arranged one above the other, a workpiece is simultaneously rolled at two or more points by at least one of the work rolls.

Abstract: The rolling mill comprises a plurality of working rolls and supporting rolls or a plurality of working rolls, intermediate rolls and supporting rolls. The intermediate rolls with their mounts and the slender working rolls ussed with them in six-high operation are exchangeable with or replaceable by larger thicker working rolls for two-high operation. No contact can occur between the body of a working roll and the body of the adjacent supporting roll during use as a two-high mill. In two-high operation the mount of a working roll is provided with a spacer piece engaging against the mounting member of the adjacent supporting roll. The mounts of the thicker working rolls used in two-high operation can be fitted into the guide pieces which act as guides for the mounting pieces of the intermediate rolls when the rolling mill is used as a six-high mill.

Abstract: A device for adjusting the profile of a roll with a deformable wall (1) mounted rotatably about a central shaft (2). Blocks (3) are aligned along the axis between a bearing face (21) of the shaft (2) and the cylindrical inner face (12), and hydraulic thrust jacks (4) are arranged between the face (21) and a bearing face (32) of the blocks (3) at the opposite, for adjusting the radial position of each block (3). The axial and transverse dimensions of each block (3) are different, and its plane and rectangular bearing face (32) works together with a single hydraulic jack (41) having an oblong working cross-section covering the greater part of the face (32). The invention applies especially to rolling-mill cylinders.