Method and apparatus for forming rings from an active brazing al

Details Method and apparatus for forming rings from an active brazing al Method and apparatus for forming rings from an active brazing al

1993-03-02

1994-11-22

Lin, Kuang Y.

Metal founding

Process

Shaping liquid metal against a forming surface

164423, B22D 1106

Patent

active

053660005

ABSTRACT:
The method for forming rings of uniform thickness from an active brazing alloy by melt-spinning the liquid alloy has the following steps: The alloy is liquefied in a crucible having a lateral opening whose height is approximately equal to the width of the ring material; the liquid alloy is forced out of the crucible onto the side surface of a metal drum of high thermal conductivity at a radial distance from the drum center approximately equal to the ring diameter, said metal drum rotating at a high circumferential velocity at a distance from the crucible approximately equal to the ring thickness; after an,,,approximately quarter to three-quarter turn of the active brazing alloy solidified on the metal drum into ring material, the latter is lifted off the metal drum by a mechanical deflector or a gas stream blown onto it in a direction opposite to the direction of rotation of the metal drum, and guided past the crucible; the ring helix being formed is guided around a lateral, coaxial extension of the metal drum which is located on one side of the crucible, serves as a winding mandrel, and has an end flange and a diameter slightly smaller than the inner diameter of the rings, and from the ring helix, the rings are cut off.

REFERENCES:
patent: 4124664 (1978-11-01), Maringer
H. H. Liebermann, "Helical Glassy Alloy Ribbons: Fabrication and Magnetic Properties", Materials Science and Engineering, pp. 185-191, 1981.
"Metallic Glasses", American Society for Metals, five pages, 1976.

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