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公开(公告)号：US20230415212A1
公开(公告)日：2023-12-28
申请号：US18242618
申请日：2023-09-06
Applicant: SMS group GmbH
Inventor： Walter KIRCHNER
Abstract: In order to provide an adjustment of the roll gap under load with high positioning accuracy and regulation accuracy, a cross-rolling unit for adjusting rolls operating under load with, disposed on a force-absorbing roll stand, a mechanical setting unit for a first cross-roll setting and a hydraulic setting unit for a second cross-roll setting, wherein the mechanical setting unit includes two mutually displaceable mechanical subassemblies having a common axis of symmetry and the hydraulic setting unit includes at least two mutually displaceable hydraulic subassemblies having respectively one central axis, has the mechanical setting unit and the hydraulic setting unit disposed in the force-absorbing roll stand as a common subassembly. The axis of symmetry of at least one of the mutually displaceable mechanical subassemblies and the central axes of each of the mutually displaceable hydraulic subassemblies are the same.
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公开(公告)号：US20230201900A1
公开(公告)日：2023-06-29
申请号：US18020926
申请日：2021-06-30
Applicant: SMS group GmbH
Inventor： Walter KIRCHNER , Paolo MARIN , Patrizio RINALDI
Abstract: A device for handling mandrel rods in a rolling plant for rolling seamless tubes comprises an inserter. The inserter moves a mandrel rod in a rolling direction such that the mandrel rod, starting from an initial state, is pushed into a tube blank situated upstream of the mandrel rod. A retaining device has a fixing unit that is movable along the rolling line and is designed to temporarily hold the mandrel rod at an action point at a rear end of the mandrel rod and to carry out a working stroke. The mandrel rod can be inserted into the rolling mill in the rolling direction and pulled out of the rolling mill counter to the rolling direction by the retaining device. The retaining device is designed such that the starting position of the fixing unit lies between the two ends of the mandrel rod in the initial state.
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公开(公告)号：US20240408658A1
公开(公告)日：2024-12-12
申请号：US18272624
申请日：2021-12-28
Applicant: SMS group GmbH
Inventor： Walter KIRCHNER
IPC: B21B13/02
Abstract: A rolling mill stand (1) for rolling an elongated workpiece, preferably in an cross rolling mill, wherein the rolling mill stand (1) has: two working rolls (20) forming a rolling gap(S), which are designed to roll the workpiece conveyed along a rolling direction (R); at least one guide device (30) with at least one guide (40), which is designed to laterally support the workpiece in the rolling gap(S) by the guide (40) being in contact with the workpiece; wherein the guide device (30) has an angle adjuster (33), which is designed to pivot the guide (40) about one or more, preferably three, spatial axes (x, y, z).
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公开(公告)号：US20230047972A1
公开(公告)日：2023-02-16
申请号：US17883795
申请日：2022-08-09
Applicant: SMS group GmbH
Inventor： Walter KIRCHNER
Abstract: In order to provide an adjustment of the roll gap under load with high positioning accuracy and regulation accuracy, a cross-rolling unit for adjusting rolls operating under load with, disposed on a force-absorbing roll stand, a mechanical setting unit for a first cross-roll setting and a hydraulic setting unit for a second cross-roll setting, wherein the mechanical setting unit includes two mutually displaceable mechanical subassemblies having a common axis of symmetry and the hydraulic setting unit includes at least two mutually displaceable hydraulic subassemblies having respectively one central axis, has the mechanical setting unit and the hydraulic setting unit disposed in the force-absorbing roll stand as a common subassembly. The axis of symmetry of at least one of the mutually displaceable mechanical subassemblies and the central axes of each of the mutually displaceable hydraulic subassemblies are the same.
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