Method for the continuous coating of a filiform steel substrate

Details Method for the continuous coating of a filiform steel substrate Method for the continuous coating of a filiform steel substrate

1996-07-22

1998-01-06

Utech, Benjamin

Coating processes

Immersion or partial immersion

427431, 4274347, B05D 118

Patent

active

057052280

ABSTRACT:
A steel wire to be coated is brought across the graphite spout of a crucible filled with a bath of molten metal, after having first been heated in a tubular duct filled with protective gas by an electric coil powered by a high frequency source to a temperature lower than that of the molten metal contained in the spout. The melting point of this metal is greater than the austenizing temperature of the steel. On leaving the spout, the coated steel wire is then cooled in a controlled manner to avoid hardening, for example, if it is a question of a steel of approximately 0.7% carbon, by having it spend several seconds in a fluidized bed whose temperature is maintained at a temperature of the order of 550.degree. C.

REFERENCES:
patent: 3779056 (1973-12-01), Padjen
patent: 4026731 (1977-05-01), Pemne
patent: 4144379 (1979-03-01), Patil et al.
patent: 4169426 (1979-10-01), Kornmann
patent: 4431688 (1984-02-01), Kornmann
patent: 4529628 (1985-07-01), Haour
patent: 4655852 (1987-04-01), Rallis
patent: 4719962 (1988-01-01), Haour
patent: 4830683 (1989-05-01), Ferguson

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