Fluid sprinkling – spraying – and diffusing – With means fusing solid spray material at discharge means – Electric arc – spark plug or induction heating
Patent
1978-05-15
1980-01-01
Love, John J.
Fluid sprinkling, spraying, and diffusing
With means fusing solid spray material at discharge means
Electric arc, spark plug or induction heating
B05B 124
Patent
active
041812565
ABSTRACT:
A metal melt-spraying method for forming deposition film without shrinkage and distortion by jetting out high pressure air to give a jet air stream from a slight gap formed between a spray nozzle and a conical tube placed in said spray nozzle to partition a space in said spray nozzle into two zones, electrically melting metal wires in a low atmospheric pressure zone formed in said jet air stream, driving the resulting molten metal droplets toward said jet air stream by a small air stream, pulverizing said molten metal droplets by said jet air stream into fine particles, simultaneously cooling rapidly said particles to solidify by said jet air stream and then blowing said particles onto a work surface, in which the improvements are that the velocity or volume of the jet air stream is adjusted according to a metal material and melting rate, and that one of two metal wires which are electrodes is made of a hard-to-melt material and is semi-fixed, or only single metal wire is used and is melted by using high frequency. Metal melt-spraying equipments employed for carrying out the method are easy to handle and can yield good quality metal deposition film.
REFERENCES:
patent: 1721092 (1929-07-01), Saeger, Jr.
patent: 1934891 (1933-11-01), Taylor
patent: 3045278 (1962-07-01), Potter
patent: 3901441 (1975-08-01), Kasagi
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