Method of remelting metals to form an elongate portion and appar

Details Method of remelting metals to form an elongate portion and appar Method of remelting metals to form an elongate portion and appar

1997-01-23

1998-09-01

Lin, Kuang Y.

Metal founding

Process

Shaping liquid metal against a forming surface

164497, 75 1024, C22B 918

Patent

active

057997217

ABSTRACT:
For the continuous remelting of metals--in particular steels and Ni-- Co-base alloys--in a short, downwardly open water-cooled chill mold (20) for producing an elongate casting portion (26) the latter is produced either by continuous or stepwise withdrawal from the chill mold (20) or when the elongate casting portion (26) is stationary by corresponding lifting movement of the chill mold (20). In order to ensure on the one hand a sufficiently high and thus economical smelting rate and on the other hand a high level of quality in respect of the remelted elongate casting portions (26), the cross-sectional area of the smelting-off electrode (16) should be at least 0.5 times the cross-sectional area of the remelted elongate casting portion (26) and the smelting-off rate should be so adjusted that it corresponds to between 1.5 and 30 times the equivalent elongate casting portion diameter (D.sub.eq) calculated from the circumference (U) of the casting cross-section, in accordance with the relationship:

REFERENCES:
patent: 3915217 (1975-10-01), Ellebrecht et al.
patent: 4291744 (1981-09-01), Medovar et al.
patent: 4642495 (1987-02-01), Mori et al.
patent: 4919191 (1990-04-01), Brodersen

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