Claims
- 1. An apparatus for manufacturing strips, bars and wire rods, said apparatus comprising:
- an annular mold having an endless open-top casting groove;
- a vertically extending shaft on which said annular mold is supported;
- means for rotating the annular mold;
- means for continuously supplying molten metal into the casting groove;
- means for forcibly cooling the annular mold so that the molten metal in the casting groove is cooled from outside of the molten metal;
- a cast section drive roll disposed at a point where a solidified shell is formed at least throughout the entire circumference of the molten metal in the casting groove;
- means for rotating the cast section drive roll to push the cast section downstream in the direction of travel of the mold;
- press-down means for pressing the drive roll toward the bottom of the casting groove to press the cast section against a surface of the mold defining the bottom of the casting groove; and
- a wedge disposed adjacent and downstream of the cast section drive roll in the direction of travel of the annular mold, said wedge having at least one surface inclined at an angle of 5 to 60 degrees relative to said surface defining the bottom of the casting groove of the mold, the at least one surface of said wedge rising from said surface defining the bottom of the casting groove such that the cast section slides diagonally upward thereover so as to become separated from the mold and continuously taken out of the casting groove.
- 2. An apparatus for manufacturing strips, bars and wire rods according to claim 1, wherein said at least one surface of the wedge comprises a plurality of surfaces, the angle of inclination of said surfaces relative to the surface defining the bottom of the casting groove progressively increasing downstream in the direction of travel of the mold.
- 3. An apparatus for manufacturing strips, bars and wire rods according to claim 1, wherein said surface defining the bottom of the casting groove is inclined toward the center of the annular mold so that the cast section therein has a greater thickness on the inner side thereof, formed at the radially innermost side of the casting groove in the annular mold, than on the outer side thereof formed at the radially outermost side of the casting groove.
- 4. An apparatus for manufacturing strips, bars and wire rods according to claim 1, wherein said annular mold has a plurality of concentrically disposed casting grooves into each of which molten metal is poured individually, whereby a plurality of sections are cast simultaneously.
- 5. An apparatus for manufacturing strips, bars and wire rods according to claim 4, and further comprising rolling means for simultaneously rolling the plurality of cast sections, said rolling means being provided downstream of the annular mold in the apparatus.
- 6. An apparatus for manufacturing strips, bars and wire rods according to claim 5, wherein said rolling means comprises rolls of varying diameters which roll the cast sections at a rolling speed that agrees with the casting speed.
- 7. An apparatus for manufacturing strips, bars and wire rods according to claim 5, wherein said casting grooves have different cross-sectional areas such that the cast sections separated from the mold have different cross-sectional areas, and said rolling means comprises a rolling mill train that consists of a first rolling mill stand provided for each of the cast sections having different cross-sectional areas to reduce the different cross-sectional areas of the individual cast sections to the same cross-sectional area, and a second rolling mill stand that simultaneously rolls the cast sections thus reduced to the same cross-sectional areas.
- 8. An apparatus for manufacturing strips, bars and wire rods according to claim 5, wherein said casting grooves have different cross-sectional areas such that the cast sections separated from the mold have different cross-sectional areas, and said rolling means comprises a rolling mill train that consists of a first rolling mill stand provided only in a pass line for cast sections of larger cross-sectional areas to reduce the different cross-sectional areas of the individual cast sections to the same cross-sectional area, and a second rolling mill stand that simultaneously rolls the cast sections thus reduced to the same cross-sectional areas.
- 9. An apparatus for manufacturing strips, bars and wire rods according to claim 1, and further comprising heating means for heating the cast section.
- 10. An apparatus for manufacturing strips, bars and wire rods according to claim 1, and further comprising a tail dam and a front dam disposed upstream and downstream, respectively, of the point at which molten metal is poured into the casting groove, the casting groove, tail dam and front dam forming an independent initial pouring space in the casting groove.
- 11. An apparatus for manufacturing strips, bars and wire rods according to claim 10, and further comprising holding means for releasably supporting the tail dam, whereby the tail dam can be released from the holding means upon completion of casting and caused to move forward after the cast section, thereby preventing a drop of the molten metal and the occurrence of the shrinkage cavities in the tail end of the cast section.
- 12. An apparatus for manufacturing strips, bars and wire rods according to claim 10, wherein the front dam is of consumable material.
- 13. An apparatus for manufacturing strips, bars and wire rods according to claim 10, wherein the front dam is of metal.
- 14. An apparatus for manufacturing strips, bars and wire rods according to claim 10, wherein the front dam is of refractory fibers.
- 15. An apparatus for manufacturing strips, bars and wire rods according to claim 10, wherein the front dam is of refractory material.
- 16. An apparatus for manufacturing strips, bars and wire rods according to claim 1, and further comprising a tail dam provided in the casting groove upstream, with respect to the direction of travel of the mold, of the point at which molten metal is poured into the casting groove, and a dummy bar having at least two degrees of freedom such that said dummy bar is bendable along the casting groove and can lie along said at least one surface of the wedge, said dummy bar being insertable in the casting groove to form a space with the tail dam to receive the poured molten metal before casting is stated, the section being cast being withdrawn by the dummy bar from the casting groove when casting is started.
- 17. An apparatus for manufacturing strips, bars and wire rods according to claim 16, wherein the dummy bar comprises an aggregate of flexible materials.
- 18. An apparatus for manufacturing strips, bars and wire rods according to claim 16, wherein said dummy bar has a head serving as a front dam.
Priority Claims (1)
Number |
Date |
Country |
Kind |
2-032387 |
Feb 1990 |
JPX |
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Parent Case Info
This is a Divisional application of Ser. No. 07/654,673, filed Feb. 14, 1991, now U.S. Pat. No. 5,293,927 dated Mar. 15, 1994.
US Referenced Citations (11)
Foreign Referenced Citations (4)
Number |
Date |
Country |
904048 |
Oct 1945 |
FRX |
56-68569 |
Jun 1981 |
JPX |
57-152352 |
Sep 1982 |
JPX |
63-13785 |
Mar 1988 |
JPX |
Non-Patent Literature Citations (1)
Entry |
Patent Abstracts of Japan, vol. 10, No. 37 (M-453) (2094) Feb. 14, 1986. |
Divisions (1)
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Number |
Date |
Country |
Parent |
654673 |
Feb 1991 |
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