Uncooled furnace roll and method for producing an uncooled furnace roll

Patent metadata

Field	Value
Publication number	US-10088237-B2
Application number	US-201515529544-A
Country	US
Kind code	B2
Filing date	Oct 28, 2015
Priority date	Nov 28, 2014
Publication date	Oct 2, 2018
Grant date	Oct 2, 2018

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.

First claim

The invention claimed is:

1. 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.

2. The furnace roll ( 1 ) according to claim 1 , characterized in that the cylindrical roll body ( 2 ) is entirely hollow, so that the hollow space ( 4 ) of the furnace roll extends at least along the entire longitudinal axis ( 2 L) of the roll body ( 2 ), preferably such that the cylindrical roll body ( 2 ) is in the form of a cylindrical sleeve with a corresponding hollow space ( 4 ).

3. The furnace roll ( 1 ) according to claim 2 , characterized in that at least one conical end piece ( 6 ) is in the form of a cap element, so that the hollow space ( 4 ) of the roll body ( 2 ), placed under vacuum, extends into the conical end piece ( 6 ) when said end piece ( 6 ) is attached to the end face ( 8 ) of the roll body ( 2 ).

4. 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).

5. The method according to claim 4 , characterized in that a conical end piece ( 6 ) is attached to one of the two end faces ( 8 ) of the cylindrical roll body ( 2 ) before a second conical end piece ( 6 ) is attached to the still open opposite end face ( 8 ) of the roll body ( 2 ), in a vacuum chamber ( 14 ).

6. The method according to claim 4 , characterized in that a respective conical end piece ( 6 ) is attached to the roll body ( 2 ) at both of its end faces ( 8 ), in the vacuum chamber ( 14 ).

7. 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.

8. The method according to claim 7 , characterized in that the connecting valve ( 12 ), with its opening ( 18 ), is recessed (countersunk) in an external surface ( 20 ) of the roll body ( 2 ) or of the end piece ( 6 ).

Assignees

• Sms Group Gmbh
• Schmidt Clemens Gmbh & Co Kg
• Schmidt Clemens Gmbh Co Kg

Inventors

• Bilgen Christian
• Meyer Alexander
• Schroemges Wolfgang
• Mohr Stefan

Classifications

• F27D3/028 Primary

  Roller rails or succession of small sized rollers · CPC title

• F27D3/026

  transport or conveyor rolls for furnaces; roller rails · CPC title