B - Operations – Transporting – 22 – D
Patent
B - Operations, Transporting
22
D
22/58
B22D 11/01 (2006.01) B22F 1/00 (2006.01) C03B 37/06 (2006.01) D04H 13/02 (2006.01)
Patent
CA 1198569
-1- ABSTRACT OF THE INVENTION Relatively long metal microfilaments made from film forming metal material are described. The microfilaments can be used to make superior high strength structural materials and/or can be used as reinforcing materials in plastic and rubber compositions. The microfilaments are made by forming a liquid film of molten film forming metal material across a coaxial blowing nozzle 5, applying a blowing gas 10 at a positive pressure on the inner surface of the metal film to blow the film and form an elongated hollow tube or cylinder 12 of molten metal. Means are provided for forming a thinned wall or weakened portion of the molten metal film forming the wall of elongated tube or cylinder. A transverse jet 13 is used to direct an entraining fluid 14 over and around the blowing nozzle 5 at an angle to the axis of the blowing nozzle. The entraining fluid 14 as it passes over and around the blowing nozzle 5 fluid dynamically induces a pulsating or fluctuating pressure field at the opposite or lee side of the blowing nozzle in the wake or shadow of the coaxial blowing nozzle and produces a laminar flow of entraining fluid in the vicinity of the forming elongated tube or cylinder. The continued movement of the entraining fluid 14 over the elongated tube or cylinder 12 produces asymmetric fluid drag forces on the tube or cylinder, and at the thinned walled or weakened wall portion longitudinally breaks the tube or cylinder to form a multiplicity of metal microfilaments, and detaches the metal microfilaments from the elongated tube or cylinder and from the coaxial blowing nozzle and the detached microfilaments are carried away from the blowing nozzle. Quench nozzles 18 can be disposed below and on either side of the blowing nozzle 5 to direct cooling fluid 19 at and into contact with the molten metal microfilaments 17 to rapidly cool and solidify the molten metal to form hardened metal microfilaments 17.
416513
Borden Ladner Gervais Llp
Torobin Leonard B.
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