Process and apparatus for continuous casting
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IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0753815
(1985-07-09)
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발명자
/ 주소 |
- Vanelderen Yvon L. (Olen BEX) Raskin Christian L. G. (Olen BEX) Mortier RenE. J. (Kasterlee BEX) Dompas John M. A. (Olen BEX)
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출원인 / 주소 |
- Hazelett Strip-Casting Corporation (Malletts Bay VT 02)
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인용정보 |
피인용 횟수 :
0 인용 특허 :
3 |
초록
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Process and apparatus for continuous casting in a twin-belt casting machine in which the moving side dams are guided along opposite sides of the moulding cavity by guide device extending along beside the respective moving side dams, and the moving side dams are cooled by cooling fluid circulated in
Process and apparatus for continuous casting in a twin-belt casting machine in which the moving side dams are guided along opposite sides of the moulding cavity by guide device extending along beside the respective moving side dams, and the moving side dams are cooled by cooling fluid circulated in at least a part of the guide device and applied directly to the moving side dams. The moving side dams are cooled by cooling fluid sprayed through orifices in the guide device directly onto the moving side dams along at least a part of the downstream zone of the moulding cavity. During movement of the side dams along the moulding cavity from its entrance to its exit, they pass successively through a first (or upstream) zone in which they face molten metal and through a second (or downstream) zone in which they face solidified metal. The cooling fluid is sprayed directly onto the moving side dams only in this second zone. The first zone occupies from approximately 3/10ths to approximately 1/2 of the overall length of the moulding cavity, and the second zone occupies the remainder. The cooling fluid is advantageously sprayed directly toward the side dam for providing very effective cooling action, and this cooling fluid is aimed in a downstream direction that forms an acute angle with the moving direction of the side dam. Preferably this acute angle is in the range from approximately 20°to approximately 50°for propelling the cooling fluid downstream away from the first zone, and preferably the cooling fluid is water.
대표청구항
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A process for continuous casting according to which a moulding cavity is formed by means of moving walls having lower and upper walls formed by lower and upper revolving endless belts each having upper and lower runs, the lower wall being formed by the upper run of said lower endless belt, the upper
A process for continuous casting according to which a moulding cavity is formed by means of moving walls having lower and upper walls formed by lower and upper revolving endless belts each having upper and lower runs, the lower wall being formed by the upper run of said lower endless belt, the upper wall being formed by the lower run of said upper endless belt and the side walls being formed by a pair of endless side dams, that move with the belts along the moulding cavity from the inlet to the outlet thereof and that are guided by a pair of fixed guides during their movement along the moulding cavity, each of said side dams has an inside surface and on outside surface, said outside surface is adjacent to the respective fixed guide which is guiding the respective moving side dam, the lower wall and the upper wall are cooled by contact with a cooling liquid, and molten metal is fed at the inlet of the moulding cavity and a cast product is delivered at the outlet of the moulding cavity, the side dams thus passing during their movement along the moulding cavity successively through a first zone, in which their inside surfaces face molten metal and through a second zone, in which their inside surfaces face solidified metal, this process being characterized by the steps of: in said second zone providing a longitudinal channel extending along each respective fixed guide adjacent to the outside surface of the respective moving side dam, providing an open end of each channel near the outlet of the moulding cavity, circulating cooling fluid in at least a part of each of said fixed guides, preventing the direct application to said side dams of the cooling fluid circulated in said fixed guides while said side dams are passing through said first zone, spraying the cooling fluid from each of the fixed guides into the respective longitudinal channel and directly applied onto the outside surface of the respective side dam during at least a portion of the movement of each of the side dams through said second zone, the cooling fluid being sprayed from the respective fixed guide into the longitudinal channel at multiple locations spaced along said channel in a direction that, seen from the inlet of the moulding cavity, forms an acute angle with the outside surface of the respective moving side dam, said spraying direction at said multiple locations propelling the cooling fluid in the respective channel in a downstream direction toward said open end of the channel, allowing the cooling fluid to escape through said open end of the channel, and controlling the molten metal for controlling the length of the first zone for preventing the first zone from extending downstream beyond a predetermined limit for keeping said limit always upstream from said spraying, thereby selectively cooling the outside surface of the side dams during travel along the moulding cavity to limit heating of the side dams as they are passing along the moulding cavity for enabling increase in the operating lifetime of the side dams and increase in the casting speed. Continuous casting apparatus for casting molten metal wherein a moulding cavity having upper and lower walls is formed between two moving belts which respectively form the upper and lower walls of the moulding cavity, and the side walls are formed by a pair of endless side dams that move with the belts along the moulding cavity from the inlet to the outlet thereof, the upper and lower walls being cooled by liquid coolant, and molten metal being introduced into the inlet and a product is discharged from the outlet which is solidified at least on the outside thereof, the side dams thus passing during their movement along the moulding cavity successively through a first zone in which their respective inner surfaces face molten metal and a second zone in which they face solidifed metal, said apparatus comprising: guide means extending along adjacent to the outer surface of the respective moving side dam for guiding the moving side dam along the moulding cavity and defining a longitudinal channel extending adjacent to the outer surface of the respective moving side dam along at least a portion of said second zone, each longitudinal channel having an open end near the outlet of the moulding cavity, liquid spray means including a plurality of liquid spray orifices located at spaced positions along the respective longitudinal channel, and said spray orifices being aimed in directions that, as seen from the inlet of the moulding cavity form acute angles with the longitudinal channels for spraying liquid coolant directly onto the respective outer surface of the respective moving side dam as it moves along adjacent to said channel along said second zone and for propelling the liquid coolant in the longitudinal channel downstream toward the open end of the channel for escaping through said open end.
이 특허에 인용된 특허 (3)
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Dompas John M. A. (Olen BE), Belt back-up apparatus and coolant application means for twin-belt casting machines.
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Wood John F. B. (Burlington VT) Platek Stanley W. (Essex Junction VT) O\Kane Joseph C. (Burlington VT) Ackel Gary P. (Burlington VT), Method and apparatus for continuous casting of metal under controlled load conditions.
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Lemmens Alfons E. (Herentals BEX) Gielen Hendrik A. L. (Kasterlee BEX), Process and apparatus for the continuous casting of metal.
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