Metal treatment – Compositions – Heat treating
Patent
1984-02-06
1987-12-22
Silverberg, Sam
Metal treatment
Compositions
Heat treating
C23C 814
Patent
active
047144971
ABSTRACT:
The present invention concerns a process for preparing ferrous parts of a color television tube and a furnace for operating such a process.
According to the invention, each ferrous part behind the base of the television tube, is prepared in a single furnace and undergoes successively an annealing, a reduction and an oxidation in three parts of the furnace 3, 4 and 5, in such a way as to eliminate the mechanical stresses, remove the rust and deposit homogeneous and adhesive layers of iron oxides I and II.
REFERENCES:
patent: 2543710 (1951-02-01), Schmidt
patent: 2591460 (1952-04-01), Morrill
patent: 3307981 (1967-03-01), Katsahmias
patent: 3479232 (1969-11-01), Broussard
patent: 4285106 (1981-08-01), Adler
Valvo Report, vol. XVIII, Section 1/2, Apr. 1974, pp. 83 to 87, (and translation).
Patent Abstracts of Japan, vol. 4, No. 48, (E-6), (530), p. 105, (E-6), (Tokyo, JP) & JP-A-5519715, (Hitachi Seisakusho K.K.), 12-2-80.
Patent Abstracts of Japan, vol. 5, No. 24, p. 696(C-43) & JP-A-55152182, (Kantou Yakin Kogyo K.K.), 27-11-80.
Patent Abstracts of Japan, vol. 6, No. 115, Jun. 26, 1982, (Tokyo, JP), p. 993, (E115), & JP-A-5744939, (Nippon Denki K.K.), 13-3-82.
Silverberg Sam
Videocolor
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