Twin-belt continuous casting apparatus

Details Twin-belt continuous casting apparatus Twin-belt continuous casting apparatus

1974-11-11

1976-05-11

Smith, Al Lawrence

Metal founding

Combined

B22D 1106

Patent

active

039556158

ABSTRACT:
Improved casting side dam apparatus for use in twin-belt continuous metal casting machines is described particularly adapted for casting rectangular copper bar providing a casting speed almost double that obtained in prior twin-belt machines and a damblock lifetime which is more than doubled, while producing a more homogeneous and symmetrical casting structure. The side dams are formed by stringing slotted damblocks along the entire length of a flexible metal strap, except for end portions of the strap. An end-to-end weld forms an endless strap loop of accurately predetermined length, and special damblocks having two mating interlocking halves are inserted into the remaining space along the strap, whereby all blocks are free to slide on the strap but with little cumulative space between blocks, which are preferably made of a bronze alloy presenting better resistance to heat cracking and higher heat conductivity than in previous damblocks. During return travel from the output end of the machine to the input, the side dams are passed by tension apparatus which deflects them along a smoothly curved arc convex toward the interior of the side dam loop to take up any available slack, forcing the blocks tightly together in end abutting relationship along the casting zone, thus ensuring a cast product without burrs on the side surfaces. The damblocks are cooled by liquid sprays before re-entry into the machine.

REFERENCES:
patent: 2904860 (1959-09-01), Hazelett et al.
patent: 3036348 (1962-05-01), Hazelett et al.
patent: 3509937 (1970-05-01), Radd
patent: 3747666 (1973-07-01), Gyongyos

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