Metal treatment – Compositions – Heat treating
Patent
1981-01-12
1983-06-28
Skiff, Peter K.
Metal treatment
Compositions
Heat treating
148150, 148156, 204 38S, 204210, 266107, 427433, C21D 806
Patent
active
043903770
ABSTRACT:
A continuous, high speed method of galvanizing and annealing a continuously travelling low carbon ferrous wire to provide a highly corrosion resistant, more ductile wire having a bright silvery luster comprising, (a) passing a continuously travelling low carbon steel wire after it has been cleaned through a zinc electroplating bath to deposit a zinc coating on the wire, (b) passing the resulting coated wire through a bath of molten aluminum-zinc eutectic alloy maintained at a temperature of about 734.degree. F. to about 786.degree. F. and comprising a major portion of zinc and sufficient aluminum to provide an aluminum-zinc alloy having a melting point less than that of zinc, to provide a coated ferrous wire, (c) drawing down the coated continuously travelling ferrous wire to a lesser cross-sectional area, (d) process annealing the drawn continuously travelling ferrous wire at a temperature up to about 1400.degree. F. for a short period of time sufficient to relieve the stresses imparted to the wire by the drawing down step but not so long that inhibiting action of the aluminum content in the coating on the iron-zinc alloying action is completely overcome, and (e) thereafter quenching the annealed wire. Alternatively, especially for fine wires and/or where thin coatings are acceptable, step (a) the electroplating step can be eliminated and the wire, after it has been cleaned, can be passed directly through a molten bath such as that described above but maintained at a temperature to about 1040.degree. F. or more and then subjected to steps (c), (d), and (e); however, the alternative method is less preferred.
REFERENCES:
patent: 101264 (1870-03-01), Hill
patent: 213015 (1879-03-01), Wahl et al.
patent: 936637 (1909-10-01), Kirk
patent: 1120191 (1914-12-01), Gibbs
patent: 1133628 (1915-03-01), Field et al.
patent: 1816617 (1931-07-01), Schueler
patent: 1984335 (1934-12-01), Crapo
patent: 2152842 (1939-04-01), Evans
patent: 2197622 (1940-04-01), Sendximir
patent: 2268617 (1942-01-01), Pierce
patent: 2281132 (1942-04-01), Young
patent: 2283868 (1942-05-01), Fowle et al.
patent: 2286073 (1942-06-01), Edick et al.
patent: 2288762 (1942-07-01), Winkler
patent: 2315725 (1943-04-01), Moller
patent: 2326629 (1943-08-01), Evans
patent: 2359095 (1944-09-01), Elder et al.
patent: 2378458 (1945-06-01), Avallone
patent: 2472393 (1949-06-01), Avallone et al.
patent: 2482978 (1949-09-01), Hacqua et al.
patent: 2686354 (1954-08-01), Lundin
patent: 2697869 (1954-12-01), Kingston et al.
patent: 2986808 (1961-06-01), Schmedler
patent: 3058840 (1962-10-01), Kerr et al.
patent: 3163566 (1964-12-01), Jenkins et al.
patent: 3190768 (1965-06-01), Wright
patent: 3343930 (1967-09-01), Borzillo et al.
patent: 3393089 (1968-06-01), Borzillo et al.
patent: 3476579 (1969-11-01), Clarke et al.
patent: 3518109 (1970-06-01), Halley
patent: 3632392 (1972-01-01), Pierson
patent: 3730758 (1973-05-01), Laidman
patent: 3782909 (1974-01-01), Cleary et al.
patent: 3844848 (1974-10-01), Stacey
patent: 3952120 (1976-04-01), Horton et al.
patent: 3959035 (1976-05-01), Sheehan
patent: 4053663 (1977-10-01), Caldwell et al.
patent: 4056657 (1977-11-01), Leckie et al.
patent: 4228200 (1980-10-01), Sander et al.
Drugov et al., "Hot Galvanizing of Steel", Protection of Metals, English Translation, May 1979, pp. 505-508.
Burns et al., Protective Coatings for Metals, Reinhold Publishing Corporation, N.Y., N.Y., 1939, pp. 79-81.
AMM-Galvanizing Section, Jun. 30, 1981, "New Zinc Alloy Poised For Commercial Tests", George Collie, pp. 15 and 19.
Galvanizing (Hot-Dip) by Heinz Bablick, 3rd Ed. Pub. by E. and F. N. Spon, Ltd., in 1950, pp. 208, 209, 213, 214, 221, 265, 266, 306-307, 377, 462, 463.
Metals Handbook, vol. 2, Heat Treating, Cleaning and Finishing, Published by American Society for Metals in 1964, p. 500.
The Making, Shaping and Treating of Steel, Published by U.S. Steel, J. M. Camp et al., 6th Ed., 1951, p. 942.
The Galvanizing Handbook by John R. Daesen, Published by Rheinhold Publishing Corp. in 1946, pp. 17-106.
Alloyed Zinc Coatings, Paul E. Schnedler, Published by Armco Steel Corp., p. 2.
Fe-Zn Alloy Formation During Galvannealing, by Smith et al., J. of the Iron and Steel Institute, Dec. 1972, pp. 897, 899.
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