Metallurgical apparatus – Means treating a continuum of work – With heating means
Patent
1996-03-25
1997-06-17
Kastler, Scott
Metallurgical apparatus
Means treating a continuum of work
With heating means
266144, C21D 956
Patent
active
056394187
ABSTRACT:
A strip floater, heat treat furnace is provided with a plenum housing defining a plenum chamber which is positioned within a refractory lined furnace enclosure. The plenum chamber contains i) a fan housing holding a recirculation fan, ii) a header and pressure pad arrangement for heating and floating strip passing through the furnace, and iii) a recirculation duct for collecting and refreshing spent furnace atmosphere. The entire furnace atmosphere circulation loop from the fan housing through the header and pressure pads and back to the fan housing from the return duct after strip impingement is thus closed and sealed thereby preventing refractory fibre and foreign matter entrainment in the gas streams impinging the strip while improving the temperature control of the furnace atmosphere and strip.
REFERENCES:
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patent: 4270959 (1981-06-01), Matsumoto et al.
patent: 5118366 (1992-06-01), Shintaku
patent: 5320329 (1994-06-01), Hoetzl et al.
patent: 5360203 (1994-11-01), Yamamoto et al.
Greenwald Roy J.
Rozevink Larry L.
Kastler Scott
Nawalanic Frank J.
Surface Combustion, Inc.
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