Coating processes – Direct application of electrical – magnetic – wave – or... – Pretreatment of substrate or post-treatment of coated substrate
Patent
1993-11-10
1995-01-24
Beck, Shrive
Coating processes
Direct application of electrical, magnetic, wave, or...
Pretreatment of substrate or post-treatment of coated substrate
427598, 427 10, 427331, 427349, 427433, B05D 104
Patent
active
053841662
ABSTRACT:
A method for controlling coating weight on a hot-dipped steel strip comprises the steps of positioning at least one pair of high-frequency (alternating) current conducting paths near one side of a steel strip and near another side of the steel strip drawn out of a coating bath, each of the high-frequency (alternating) current conducting paths being parallel with a surface of the steel strip above the coating bath, and flowing a-high-frequency (alternating) current strong enough to magnetically saturate the steel strip through the at least one pair of high-frequency (alternating) current conducting paths to induce a high-frequency (alternating) current of an opposite phase in the steel strip, a magnetic pressure acting on surfaces of the steel strip being generated by an interaction of the induced high-frequency (alternating) current with a high-frequency (alternating) current of the high-frequency (alternating) current conducting paths.
REFERENCES:
patent: 3928657 (1975-12-01), Armstrong et al.
patent: 4273800 (1981-06-01), Reid
patent: 4518840 (1985-05-01), Bronner
Patent Abstracts of Japan, vol. 7, No. 66 (C-157) Mar. 18, 1983 & JP-A-58 001 064 (Sumitomo Kinzoku Kogyo KK).
Patent Abstracts of Japan, vol. 7, No. 69 (C-158) Mar. 23, 1983 & JP-A-58 003 958 (Sumitomo Kinzoku Kogyo KK).
Ishii Toshio
Sato Toshio
Sugiyama Shunichi
Yada Akira
Beck Shrive
Maiorana David M.
NKK Corporation
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