Manufacture of a composite tubular product

Details Manufacture of a composite tubular product Manufacture of a composite tubular product

1981-02-24

1982-12-21

Rosenberg, P. D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 58, 75 93G, C22B 900

Patent

active

043647707

ABSTRACT:
For the purpose of introducing an additive into a molten metal bath, a reactive powder is enclosed in a tubular sleeve composed of a metal compatible with the bath. The cross-section of the sleeve is reduced after filling to compact the powder while leaving it porous. The filled sleeve can be formed by profiling a metal strip to a cup-shaped cross-section, metering the powder into the cup-shaped profile, closing the edges of the strip together to enclose the powder, forming the edges to hook together and crimping the hooked edges.

REFERENCES:
patent: 3841616 (1974-10-01), Rocher
patent: 3942775 (1976-03-01), La Bate
patent: 4057420 (1977-11-01), Brace
patent: 4085252 (1978-04-01), Karinthi
patent: 4094666 (1978-06-01), Ototani
patent: 4108637 (1978-08-01), Hetke
patent: 4126446 (1978-11-01), Knorre
patent: 4143211 (1979-03-01), Obinata
patent: 4154604 (1979-05-01), Gruner
patent: 4174962 (1979-11-01), Frantzreb
patent: 4175918 (1979-11-01), Frantzreb

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