Metallurgical apparatus – With control means responsive to sensed condition – With temperature sensor
Patent
1979-08-09
1981-09-08
Rutledge, L. Dewayne
Metallurgical apparatus
With control means responsive to sensed condition
With temperature sensor
266 80, 266 81, 250345, 73 19, C21D 1100
Patent
active
042880629
ABSTRACT:
A system is described for precise monitoring and control of the carbon content of the atmosphere of a furnace such as a carburizer used in the heat-processing of steel parts. The disclosed apparatus includes a sampling system for withdrawing a gas sample from the atmosphere within a furnace and an analyzer for producing signals indicative of the partial pressures of at least two gaseous components such as carbon dioxide and carbon monoxide. The analyzer preferably utilizes selective absorption of narrow-band infrared radiation signals in determining these signals. A processor combines the signals indicative of partial pressures with parameters obtained from measurements of furnace temperature, and calculates carbon potential of the furnace atmosphere. The processor output is coupled with an atmosphere control which maintains desired levels of carbon potential in the atmosphere of the furnace by, for example, regulating the flow of an enriching gas to the furnace.
REFERENCES:
patent: 4049473 (1977-09-01), Davis
patent: 4108693 (1978-08-01), L'Hermite et al.
patent: 4145232 (1979-03-01), Solomon
patent: 4205913 (1980-06-01), Ehrfeld
patent: 4208224 (1980-06-01), Girrell
"Natural Gas Heating Value Determination Using an Infrared Calorimeter", F. Fraim et al., presented AGA Transmission Conf. 5/78.
"Control of Carbon Potential in Heating Atmospheres Using a Carbon Sensor", Blumenthal et al., ASM Heat Treating Conf. Chicago, 9/75.
"Dew Point Control in Practice", O. E. Cullen, Metal Progress 11/54.
"Practical Experience in the Control of Heat Treatment Atmospheres Using the Oxygen Probe," N. Beach, 5th Ind. Proc. Heat. Conf., 1972.
Metals Handbook", 8 edition, vol. 2, American Society of Metals (1964), pp. 85-92, 113-114.
Chemical Reaction Engineering, Octave Levenspiel, John Wiley and Sons Inc., N. Y. 1967 pp. 205-208.
Fraim Freeman W.
Gupta Bhupendra K.
Shefsiek Paul K.
Holcroft
Messenger Herbert E.
Neal James L.
Rutledge L. Dewayne
Sheehan John P.
LandOfFree
Apparatus for control and monitoring of the carbon potential of does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for control and monitoring of the carbon potential of , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for control and monitoring of the carbon potential of will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1189125