Method and apparatus for the direct casting of metals to form el

Details Method and apparatus for the direct casting of metals to form el Method and apparatus for the direct casting of metals to form el

1991-12-30

1995-06-27

Bradley, P. Austin

Metal founding

Process

Shaping liquid metal against a forming surface

164417, 164419, B22D 1100

Patent

active

054271720

ABSTRACT:
A method for the direct casting of metallic material, such as steel, to produce elongated bodies (2) which can form blanks having a cross-section which corresponds relatively close to the cross-section of the intended products, in which method a metal melt (1'), while at least its outermost layer remains molten, is caused to run from an outlet gate (3) in a molten-metal container (1) and is collected subsequent to solidification. The melt (1') of molten metal which exits from the gate exits together with a metallic body (5) which has substantially the same melting point as the molten metal, this metallic body being passed through the gate (3), inserted into and moving with the molten metal and causes cooling of the molten metal (1') progressively. The metallic body thereby entrains the molten metal at substantially the same speed as the metallic body (5) in what is termed a boundary layer. The cross-section of the inserted metallic body (5) is correlated to the cross-section of the molten metal determined by the outlet gate, so that the cooling and entraining effect of the inserted body assists in forming the desired boundary layer and in the formation of a network of solidified metal adjacent the metallic body. There is also an arrangement for carrying out the method.

REFERENCES:
patent: 2310893 (1943-02-01), Brenner
patent: 3568753 (1971-03-01), Clarke
patent: 4726417 (1988-02-01), Sano
patent: 4733716 (1988-03-01), Tominage

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