Metal treatment – Process of modifying or maintaining internal physical... – Magnetic materials
Patent
1984-12-14
1987-03-03
Andrews, Melvyn J.
Metal treatment
Process of modifying or maintaining internal physical...
Magnetic materials
266 90, C21D 1100
Patent
active
046473190
ABSTRACT:
The decarburization reaction which occurs in the production of an electrical steel sheet is quantitatively detected by passing an electromagnetic wave beam into the vicinity of the sheet, which is positioned in an annealing furnace, and then measuring the absorption amount of the electromagnetic wave beam, which is absorbed by water vapor in the vicinity of the steel sheet and/or by CO gas formed due to the reaction between the water vapor and the steel sheet.
REFERENCES:
patent: 2886478 (1959-05-01), Beard
patent: 2914434 (1959-11-01), Snavely
patent: 3463631 (1969-08-01), Vaysseire et al.
patent: 4288062 (1981-09-01), Gupta et al.
"Steel Handbook IV, 3rd Edition", Edited by the Japan Institute for Iron and Steel, p. 561.
Andrews Melvyn J.
Kastler S.
Nippon Steel Corporation
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