Brittle wire manufacturing method and apparatus
AssigneeU.S. Welding International, Ltd.
InventorsL. E. Mann, R. E. Simon
Life of this patent
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Abstract
A method for making wire of brittle alloys including coating rods of the brittle alloy with refractory fluoride and organic polymer, loading the coated rods into a container, filling the container with metallic powder, sealing the container, heating the filled and sealed container, extruding the filled container into a diminished diameter and elongated length bar filled with reduced diameter wires, removing the container from the wires, and separating the wires. Alternatively continuously passing brittle alloy wire through a clamshell furnace, a liquid gas quench, roll reduction process, cleaning and polishing process, and final storage process.
Claims2
A method of manufacturing elongate reduced diameter wires from elongate components of a larger diameter preforms comprising:
- coating a plurality of preforms with a mixture of calcium fluoride, acrylic copolymer, and water;
- filling a cylindrical container closed on one end with the coated preforms so as to achieve maximum density of the preforms;
- filling all available voids within the container with chromium powder;
- inserting a filtering material suitable to allow passage of fluids, but not chromium powder on top of the chromium powder at an open end of the container;
- attaching a vented cap to the open end of the container, thereby forming a billet;
- preheating the billet sufficiently to remove moisture from the coatings, pyrolyze the acrylic copolymer, and raise the entire billet to a forging temperature of the preforms;
- extruding the billet into a reduced diameter bar containing wires;
- cooling the bar;
- expanding the cylindrical container portion of the bar by rolling the bar under pressure;
- removing the expanded cylindrical container from the wires;
- and separating the wires.
Dependencies are inferred from the claim text.