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AssigneeHazelett Strip-Casting Corporation
InventorsRobert William Hazelett, John Frederick Barry Wood
Estimating the term…
Continuous casting apparatus is described wherein the temperature of the flexible casting belts in twin-belt machines having two or more main rolls in each belt carriage is controllably elevated prior to contact with the molten metal to improve the casting conditions and the operation of the thin flexible casting belts; the temperature elevation preferably being relatively gradual may be carried out while the travelling belts are approaching the nip rolls or while the belts are in contact with the nip rolls, or both. Zone control of belt pre-heating is disclosed, and control of the coolant streams issuing from the curved nip roll tubes by use of fingernail-like extenders may be provided to aid in pre-heating the belts and in controlling their operation. Intensive infra-red heaters are shown directed at close range toward the casting surfaces of the belts, these heaters serving also to cure and dry any coating material on the belts. Heating of the nip rolls by means of hot fluid, such as steam, is described, with the hot fluid being directed into the interior of the nip roll or being directed into the deep grooves in the nip roll beneath the rear surfaces of the casting belts. Mechanical and thermal sensors may be employed to sense the distortion of the belts and to measure their operating temperatures, these sensors being shown with automatic control of the belt pre-heating action. The apparatus of the invention can be applied to twin-belt casting machines regardless of whether the molten metal is supplied by open pool, closed pool or injection feeding.
In a twin-belt casting machine in which a casting region is defined between opposed portions of the front faces of a pair of revolving endless flexible casting belts and wherein there are two nip rolls with the casting belts curving and travelling partially around the respective nip rolls as they move toward the casting region, in which the molten metal to be cast is introduced into the casting region and comes into contact with the front faces of the respective belts to be carried along between the front faces of the belts as the metal is being cast and in which the nip rolls have deep circumferential grooves positioned beneath the reverse surfaces of the casting belts with curved coolant feed tubes nested within these grooves having nozzles at their ends for directing streams of the liquid coolant onto the reverse surfaces of the belts in advance of the position where the molten metal initially comes into contact with the front faces of the casting belts, the invention comprising:
In a twin-belt casting machine in which a casting region is defined between opposed portions of the front faces of a pair of revolving endless flexible casting belts and in which the molten metal to be cast is introduced into the casting region to be carried along between the front faces of the belts as it is being solidified, the invention comprising:
In a twin-belt casting machine in which a casting region is defined between opposed portions of the front faces of a pair of revolving endless flexible casting belts and in which the molten metal to be cast is introduced into the casting region to be carried along between the front faces of the belts as it is being solidified, the invention comprising:
In a twin-belt casting machine in which a casting region is defined between opposed portions of the front faces of a pair of revolving endless flexible casting belts and wherein there are two nip rolls with the casting belts curving and travelling partially around the respective nip rolls as they move toward the casting region, in which the molten metal to be cast is introduced into the casting region to be carried along between the front faces of the belts as the metal is being cast, the invention comprising:
In a twin-belt casting machine in which a casting region is defined between opposed portions of the front faces of a pair of revolving endless flexible casting belts and wherein there are two nip rolls with the casting belts curving and travelling partially around the respective nip rolls as they move toward the casting region, in which the molten metal to be cast is introduced into the casting region to be carried along between the front faces of the belts as the metal is being cast, the invention comprising:
In a twin-belt casting machine in which a casting region is defined between opposed portions of the front faces of a pair of revolving endless flexible casting belts and wherein there are two nip rolls with the casting belts curving and travelling partially around the respective nip rolls as they move toward the casting region, in which the molten metal to be cast is introduced into the casting region to be carried along between the front faces of the belts as the metal is being cast, the invention comprising:
In a twin-belt casting machine in which a casting region is defined between opposed portions of the front faces of a pair of revolving endless flexible casting belts and wherein there are two nip rolls with the casting belts curving and travelling partially around the respective nip rolls as they move toward the casting region, and wherein the nip rolls have deep circumferential grooves forming narrow ridges engaging the reverse surfaces of the respective casting belts, in which the molten metal to be cast is introduced into the casting region to be carried along between the front faces of the belts as the metal is being cast, the invention comprising:
In a twin-belt casting machine in which a casting region is defined between opposed portions of the front faces of a pair of revolving endless flexible casting belts and wherein there are two nip rolls with the casting belts curving and travelling partially around the respective nip rolls as they move toward the casting region, in which the molten metal to be cast is introduced into the casting region to be carried along between the front faces of the belts as the metal is being cast, wherein the nip rolls have deep circumferential grooves located beneath the reverse surfaces of the respective casting belts with curved coolant feed tubes nested within these deep grooves beneath the reverse surfaces of the casting belts and having nozzles at the ends of said tubes for directing streams of liquid coolant onto the reverse surfaces of the casting belts ahead of the position where the molten metal is initially brought into contact with the front faces of the casting belts, the invention comprising:
In a twin-belt casting machine in which a casting region is defined between opposed portions of the front faces of a pair of revolving endless flexible casting belts and in which the molten metal to be cast is introduced into the casting region to be carried along between the front faces of the belts as it is being solidified and wherein liquid coolant is applied to the reverse surfaces of the casting belts along the casting region and is also removed from the reverse surfaces by coolant applicator and scoop units, the invention comprising:
Dependencies are inferred from the claim text.