Metal treatment – Process of modifying or maintaining internal physical... – Producing or treating layered – bonded – welded – or...
Patent
1991-01-02
1992-08-11
Dean, R.
Metal treatment
Process of modifying or maintaining internal physical...
Producing or treating layered, bonded, welded, or...
266 44, 148634, 148644, C21D 176
Patent
active
051375869
ABSTRACT:
An improved method of heat treating a continuous strip of metallic material of indeterminate length in a continuous annealing furnace. The furnace includes a heating section having a plurality of gas jet heaters and a cooling section having a plurality of gas jet coolers. The continuous strip is heated and cooled in the heating and cooling sections within predetermined selected temperature ranges for the strip, by convection and solely with mixtures of hydrogen and nitrogen gases impinged against both sides of the strip through the gas jet heaters and the gas jet coolers. The temperatures of the strips in the heating and cooling section are monitored. Temperatures are controlled by varying the ratios of the mixtures of the heating and cooling gases which achieves and maintains the predetermined selected temperature ranges for the strip in the heating and cooling chambers despite changes in operating conditions.
REFERENCES:
patent: 2529689 (1950-11-01), Hess
patent: 4069008 (1978-01-01), Bloom
patent: 4316717 (1982-02-01), Thome
patent: 4440583 (1984-04-01), Ikegami et al.
patent: 4588378 (1986-05-01), Yamamoto et al.
patent: 4836774 (1989-06-01), Harada et al.
"Convection Heat Transfer--Gas Streams-Jet Impingement", American Society of Mechanical Engineers, 1961 by Robert Gardon and John Corbonpue.
Energy Management of Industrial Furnaces, John Wiley, pp. 142-144, ISBN 89464-316-9, by Carol Cone, also pp. 78-79; 1988.
"High Performance Hydrogen Annealing Technology", Iron and Steel Engineer, Aug. 1988, pp. 43 and following, by Derek Powell.
"Design Installation and Operation of Wheeling-Nisshin's Aluminizing and Galvanizing Line", Iron and Steel Engineer, Nov. 1989 by Yoshio Hayashi and others.
"Heat Transfer Characteristics of Impinging Two Dimensional Air Jets", Journal of Heat Transfer, American Society of Mechanical Engineers, Feb. 1966, pp. 101-108 by Robert Garden and another.
Dean R.
Phipps Margery S.
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