摘要:
A method of operating a roll stand arrangement composed of one or more roughing stands and a compact rolling group arranged downstream of the roughing stands and transversely offset relative to the roughing stands. The compact rolling group is connected to the roughing stands through roller conveyors and a transverse conveying unit. The compact rolling group is composed of a first and a second universal stand or two-high stand and an intermediate upsetting stand between the first and second stands. Preliminary sections arriving from a continuous casting plant are supplied directly or after intermediate storage to the roll stand arrangement. The rolling stock strand which has been rolled in the roughing stands is supplied optionally from a first entry side or a second entry side into the compact rolling group in dependence on the number of passes required by the respective rolling program.
摘要:
An apparatus for forming curved surgical needles is provided which includes a needle curving system for imparting an arcuate profile to sequentially presented needle blanks and a rotating system for pressing the needle blank against the curving system. The apparatus also includes needle supply and advancing systems for sequentially feeding and advancing the needle blanks to the needle curving system.
摘要:
Primary components of the conveyor for introducing the thin strip material (2), wound into a coil (1), into the roll nip formed by the work rolls (4, 5) of a four-high rolling mill (3) are a coil cart (6) and a propelling device (7) with a clamping device (8) for seizing the strip feed end (9) of the rolling strip (2). Between a readying station (10) and an unwinding reel (11), a motor-driven coil cart (6) with a hoisting device (14) for lifting and lowering the coil (1) is movable in the strip traveling direction (a) on a track (12). In the readying station (10), backup and pinch rolls (15, 16), adjustable transversely to the strip traveling direction (a), are disposed in opposition on the two longitudinal sides of the coil cart route, for positioning the coil (1) and for threading the strip feed end (9) into a clamping device (8) attached to a transport device (7) with a drive motor, that can be propelled along a longitudinal side of the coil cart route. A clamping device (8) for seizing the strip feed end (9) at the coil (1) is attached to the propelling device (7); this clamping device can be pivoted about a pivot axis (19--19) extending transversely to the strip traveling direction (a) from a receiving position (I) in the range of action of an operator (27) by way of an intermediate position (II) over the coil (1) and a waiting position (III) into a position (IV) for transferring the strip feed end (9) to an introducing device (20) arranged upstream of the rolling mill (3), and vice versa.
摘要:
A rolling mill comprising a mill stand which is mounted on a movable stage and in which are mounted grooved mill rolls whose necks are connected with hydraulic drives and gear wheels in mesh with each other. The movable mill stand is provided with at least two pairs of inductors mounted on a bottom-mill separator intermediate of housing braces. The inductors are disposed above and under the continuously cast ingot, referred to hereinafter as a continuous casting, being rolled, on both sides of the mill rolls. The inductors establish in said rolled continuous casting inductive currents which heat said casting, and electromagnetic forces, which create through the inductor bodies pulling-and-pushing forces which are applied to the movable mill stand.
摘要:
A rolling mill comprises a movable mill stand mounted in slideways and accommodating a mill roll unit installed therein on supports, said mill roll unit including housings with grooved mill rolls disposed therein and roll necks which are coupled with hydraulic drives and gear wheels in mesh with each other. The movable mill stand is equipped with two linear cylindrical inductors establishing a travelling magnetic field. Said inductors are mounted on supports coincident with the axis of rolling of a round ingot, referred to hereinafter as a continuous round casting, and are rotatable about said axis of rolling through an angle of at least 90.degree., the mill roll unit being disposed intermediate of said inductors and being fixed rigidly to the end faces of the inductor bodies.
摘要:
Transporting means for transporting slabs in rolling mills, especially wide strip rolling mills, from the slab storage place to the pusher furnaces, which includes slab packet conveying means extending parallel to the axes of the pusher furnaces and at a substantially right angle to the direction of movement of the furnace roller conveyor means.
摘要:
Feeding stock used to form a tapered structure into a curving device such that each point on the stock undergoes rotational motion about a peak location of the tapered structure; and the stock meets a predecessor portion of stock along one or more adjacent edges.