Working method and installation for the flexible and economical pickling and cold-rolling of metal strips
First Claim
1. Apparatus for pickling and cold-rolling metal strip, said apparatus comprising:
- a metal pickler, a reeling arrangement comprising one of a horizontal and a vertical reverse-coiler, said reverse coiler comprising a coiling reel mandrel, an uncoiling reel mandrel, and a separate drive unit for each mandrel, said mandrels being axially movable, said drive units being disconnectable from the mandrels when the reels are reversed, and a cold-rolling mill which is a reversing mill.
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Accused Products
Abstract
The installation includes an in-line arrangement of a metal pickler, a reeling arrangement installed on the coiling side of the metal pickler, and a cold-rolling mill. The method includes ones of the following alternative sequences of work steps:
(a) the strip leaving the metal pickler bypasses the reeling arrangement and is introduced into the cold-rolling mill for a first reduction pass and rolled out over the course of several deformation passes; or
(b) the strip leaving the metal pickler is wound on the reeling arrangement into a coil; after the coil is switched to the uncoiling position, the strip is fed into the cold-rolling mill and rolled out over the course of several deformation passes; or
(c) the strip leaving the metal pickler is wound as hot-rolled strip on the reeling arrangement to obtain the finished strip; or
(d) pre-pickled, hot-rolled strips are sent to the reeling arrangement and then uncoiled from the uncoiler into the cold-rolling mill and rolled in several deformation passes.
22 Citations
9 Claims
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1. Apparatus for pickling and cold-rolling metal strip, said apparatus comprising:
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a metal pickler, a reeling arrangement comprising one of a horizontal and a vertical reverse-coiler, said reverse coiler comprising a coiling reel mandrel, an uncoiling reel mandrel, and a separate drive unit for each mandrel, said mandrels being axially movable, said drive units being disconnectable from the mandrels when the reels are reversed, and a cold-rolling mill which is a reversing mill. - View Dependent Claims (2, 3)
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4. A method for pickling and cold rolling metal strip in an installation comprising an in-line arrangement of a metal pickler, a reeling arrangement comprising a coiler and an uncoiler, and a cold-rolling mill, said method comprising the following serial steps:
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passing a metal strip through the pickler, introducing the strip to the reeling arrangement, winding the strip into a coil on the coiler, switching the coil to the uncoiler, uncoiling the strip from the coil into the cold-rolling mill for a first reduction pass, and rolling out said strip in several deformation passes. - View Dependent Claims (5, 6, 7, 8, 9)
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Specification