C - Chemistry – Metallurgy – 21 – D
Patent
C - Chemistry, Metallurgy
21
D
327/22, 148/25
C21D 9/64 (2006.01)
Patent
CA 1311279
ABSTRACT The present invention is a process to hold a wire at a specified temperature for a specified period of time by a direct-resistance heating means to apply such voltage as to generate Joule's heat to offset the quantity of heat release from the heated wire at unforced cooling after the travelling wire is heated rapidly to a specified temperature throughout its cross-section. A temperature-holding apparatus subsequent to heating of wire may be either an arrangement to supply power directly to a wire through feeding wheel electrodes or an arrangement having the combination of a transformer of shell type and a hollow annular holding furnace incorporating guide rollers, and having wheel electrodes electrically connected by a lead, disposed outside of the inlet and outlet of the holding furnace and producing secondary current in the multiple-wound wire in the furnace with the lead as a return, depending upon whether the holding time is shorter or longer. The latter has an apparatus to impart advancing force and curl to the wire so that thick and inflexible wire can be set in the holding furnace, and rollers permitting to set a desired number of turns of wire in the holding furnace.
579730
Sato Hiroki
Seto Yoshiki
Fetherstonhaugh & Co.
Neturen Company Limited
Sato Hiroki
Seto Yoshiki
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