Abstract: A sheet of strip material of metal is coiled into a ring-like member, with a broader surface thereof being oriented in a radial direction. Opposite ends of the sheet of strip material are connected together by a joint. The joint includes a concave portion and a convex portion which are adapted to be engaged with each other against a repulsive force in a circumferential direction. The ring-like member is formed, on the inner periphery thereof, with teeth for engagement with a gear of a transmission, thereby producing a friction plate.

Abstract: A universal roll stand including a multiple-part stationary roll housing on the drive side and a multiple-part roll housing on the operator side which can be moved away, wherein the housings are connected to each other through hydraulically pretensioned tie rods or the like. The roll housings are composed of conventional two-high housing frames and vertical frames which can be fixedly anchored to the two-high housing frames. The vertical frames may be composed of several parts and include two flange-mounted beams arranged spaced apart from each other by the distance between the housing beams of the roll stand and a crosshead connected to the flange-mounted beams.

Abstract: A plurality of grooves, which are defined in a reinforcing ring, comprise respective end walls which are formed as inclined surfaces. The grooves further comprise walls on which engaging projections are disposed in parallel to the inclined surfaces respectively. Segmented dies are installed in the grooves. Grooves, which are defined on the segmented dies, slidably engage with the engaging projections respectively. Accordingly, the segmented dies are displaced along the inclined surfaces while being guided by the engaging projections. Thus, it is possible to stably hold the segmented dies on the reinforcing ring. Further, it is possible to simplify the structure of the forging apparatus, and it is possible to decrease the number of parts.

Abstract: A roll stand with work rolls supported by a back-up roll either directly or through an intermediate roll, particularly work rolls which are axially displaceable in opposite directions, wherein at least one of the rolls of the roll stand is constructed with varying resilience over the length thereof, particularly with a greater flattening behavior in at least a portion thereof. For this purpose, at least one of the rolls has in the area between the roll neck and the outer surface of the roll at least one notch extending concentrically about the axis.

Abstract: Method and respective hot rolling plant for the continuous production of bars, iron rods or wire, of the type in which the rolled section is cut longitudinally in which: the result is a thin flat bloom (A) with large flat (B) with a thickness close to that of the maximum section of the bar, iron rod or wire to be obtained and with a width equal to at least one multiple of said maximum section; said large flat (B) is further rolled by opposite annularly grooved rolls (23), to shape in contra-opposition the opposite buckled surfaces and recesses in order to bring the section of large flat to the shape of ovals or lozenges one connected to the other for a very thin rolling thickness between the section of one and the section of the other in correspondence of the minimum of said opposite recesses (C); said sections are longitudinally separated in correspondence of the respective thickness minimum, creating a bed of rod sections (D) in continuous advancement, in which each rod section makes up the bar or iron rod