摘要:
A rolling mill for rolling or sizing of metallic pipes, bars and wires has a plurality of rolling units which are arranged on a straight line close to one another and can be exchanged in total, partly or individually, each of the rolling units having at least three rolls which are arranged in a star-like configuration around a rolling mill axis, drive shafts and motors each driving a respective one of the rolls in all the rolling units, a rolling unit housing provided for the rolling units, roll bearings provided for the rolls, and multi-part roll shafts provided for supporting the rolls so that the rolls can be exchanged without dismounting of the rolling unit housing and the roll bearings, the rolling units holding the rolls inside and outside of the rolling mill in their operational positions.
摘要:
The invention relates to a rolling mill for rolling stock 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.
摘要:
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.
摘要:
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.
摘要:
A cooling conveyor arrangement for rolled wire or wire rod which has left a water cooler has a loop-forming device which deposits the wire in overlapping loops on an air-cooling conveyor. To obtain a shorter cooling path, which is desirable for high-grade steels to reduce the rate of cooling, the loops fall onto a conveyor portion and are carried by a conveyor portion to a coil-forming station where the loops are collected. To obtain a longer cooling path a removable conveyor portion is switched into place so that the loops are carried along a conveyor portion to an opening where they fall onto a conveyor portion. A conveyor portion is swung into alignment with the portion carrying the loops to feed the loops to the coil-forming station.
摘要:
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.
摘要:
A roll block for rolling wire, rods, pipes and flat metal material to be rolled, has a plurality of exchangeable roll stands located closely next to one another in a roll line and each having a plurality of rollers, a plurality of C-shaped frames holding the roll stands and positioned closely next to one another, turning moments transfer components provided in the C-shaped frames for driving the rollers, a number of the C-shaped frames corresponding to a maximum number of the roll stands, a common stand housing located at a drive side of the C-shaped frames and spaced therefrom, intermediate transmissions located at a front side of the common stand housing facing the C-shaped frames in a separately changeable manner, driving motors located at a rear side of the common stand housing remote from the C-shaped frames and coupled to the intermediate transmissions in a separately exchangeable manner, the intermediate transmissions and the C-shaped frames having mutually coupled shafts which bridge a spacing between the stand housing and the C-shaped frames.
摘要:
A thin walled chill mould is provided with several cooling chambers by which the intensity of cooling can be varied during casting. During pouring, cooling of the lowermost chamber is commenced first and with low intensity. As filling continues, cooling by the other cooling chambers is commenced successively and at increasing intensities. After filling is complete, cooling is continued at these different intensities until the mould has been closed and tilted to the horizontal. Thereafter cooling is continued at maximum intensity in all chambers while the mould is rotated about its longitudinal axis. The method and the chill mould are provided particularly for the manufacture of long, slender ingots, billets or the like, particularly for the manufacture of seamless tubes. Corresponding control of the cooling operation avoids fissures and facilitates ejection of the ingot from the chill mould. Moreover, the control of the cooling operation permits the formation of a uniform concentric cavity when manufacturing hollow ingots.
摘要:
A continuous rolling line and method for rolling wires or bars is provided using at least one repeater rolling unit of at least two roll stands having a rolled stock loop between them and a multi-stand continuous rolling unit spaced from and receiving rolled stock from the repeater rolling unit.
摘要:
In a method of controlled rod or wire rolling of alloy steel, for example austenitic steel, in a rolling mill comprising a plurality of roll blocks (1, 2, 3) each having a plurality of roll stands, the temperature of the alloy steel being rolled in brought to a predetermined value in its passage between the blocks (1, 2, 3) by positive cooling by a cooler (6, 7) and/or positive heating by a heater (10, 11). Rolling at a specified temperature, or a specified temperature differential between the surface and the core, of the alloy steel being rolled is thus made possible.