Uncooled furnace roll and method for producing an uncooled furnace roll
AssigneesSMS group GmbH, Schmidt + Clemens GmbH + Co. KG
InventorsChristian Bilgen, Alexander Meyer, Wolfgang Schroemges, Stefan Mohr
Life of this patent
Estimating the term…
Abstract
The invention relates to an uncooled furnace roll (1) for transporting continuously cast material from a continuous casting facility, and to a method for the production of such a furnace roll. The furnace roll (1) comprises a cylindrical roll body (2), conical end pieces (6) being attached to the end faces (8) of the roll body. Inside the furnace roll (1) a hollow space (4) is provided in the region of the roll body (2) and/or in the region of at least one conical end piece, said hollow space being sealed off from the atmosphere (A) and being placed under vacuum.
Claims8
An uncooled furnace roll (1) for transporting continuously cast material from (or in) a continuous casting facility comprised of
- a cylindrical roll body (2), and
- conical end pieces (6) which are attached to the respective end faces (8) of the roll body (2),
- characterized in that
- inside the furnace roll (1) a hollow space (4) is provided in the region of the roll body (2) and/or in the region of at least one conical end piece (6), said hollow space being sealed off from the atmosphere (A) and being under vacuum, so that vacuum means of thermal insulation are provided, at least for the roll body (2) and/or the conical end piece (6), and in that a connecting valve (12) is disposed in a wall (16) of the roll body (2) or of a conical end piece (6), which valve is in fluid communication with the hollow space (4) of the furnace roll, wherein the hollow space (4) of the furnace roll can be placed under vacuum via the connecting valve (12);
- wherein the connecting valve (12) is in the form of a check valve which shuts off the hollow space (4) with respect to the atmosphere (A) when the hollow space (4) is placed completely under vacuum.
A method for producing an uncooled furnace roll (1), characterized by the following steps:
- preparing a cylindrical roll body (2);
- preparing at least one conical end piece (6);
- and
- attaching a conical end piece (6) to an end face (8) of the roll body (2), such that thereby a hollow space (4) which is formed inside the furnace roll (1) in the region of the roll body (2) and/or in the region of the conical end piece (6) is closed off so as to be sealed against the atmosphere (A), wherewith the hollow space (4) is placed under vacuum;
- attaching the conical end piece (6) to an end face (8) of the roll body (2) in a vacuum chamber (14) by means of electron beam welding (EB welding).
A method for producing an uncooled furnace roll (1), characterized by the following steps:
- preparing a cylindrical roll body (2);
- preparing at least one conical end piece (6);
- and
- attaching the conical end piece (6) to an end face (8) of the roll body (2), such that thereby a hollow space (4) which is formed inside the furnace roll (1) in the region of the roll body (2) and/or in the region of the conical end piece (6) is closed off so as to be sealed against the atmosphere (A), wherewith the hollow space (4) is placed under vacuum;
- providing a connecting valve (12) which is in fluid communication with the hollow space (4) of the furnace roll and is disposed in a wall (16) of the roll body (2) or of the conical end piece (6), wherein after the conical end piece (6) is attached to the roll body (2), which serves to close off the hollow space (4), a vacuum is applied to the connecting valve (12), whereby the hollow space (4) is placed completely under vacuum;
- and
- wherein the connecting valve (12) is in the form of a check valve, which closes off the hollow space (4) with respect to the atmosphere (A) when the hollow space (4) has been placed completely under vacuum.
Dependencies are inferred from the claim text.