Electric heating – Metal heating – By arc
Patent
1985-03-11
1987-04-07
Paschall, M. H.
Electric heating
Metal heating
By arc
219121PT, 21912434, B23K 1500
Patent
active
046563318
ABSTRACT:
A multi-purpose optical sensor operates in the medium-to-far infrared wavelength spectral region to sense the surface temperature of plasma-jet spray coating materials. This plasma itself emits little or no radiation in this region and, accordingly, the output signal from the sensor is used to adjust the electrical input and other variables associated with the plasma spray torch to insure that particles arriving at the substrate surface to be coated are, in fact, in a molten state. The sensor employs infrared filters and, additionally, the sensor is used to monitor not only coating and temperature but also plasma beam divergence and particle seeding density to provide other control functions.
In another embodiment, the sensor is used to measure the temperature and size of a molten metal pool in the presence of an electric arc, as in the case of the melting and pouring of metal to form ingots, and to control the electric arc and other melting parameters so as to control the size and temperature of the molten pool. It may also be used to locate the position of foreign matter on the surface of the molten pool and to manipulate the arc so as to move the foreign matter away from the pouring region, thereby restricting the amount of such foreign matter which enters the poured metal stream, thus producing cleaner ingots having improved freedom from inclusions.
REFERENCES:
patent: 3602683 (1971-08-01), Hishida et al.
patent: 3664942 (1972-05-01), Havas et al.
patent: 3873836 (1975-03-01), Greene
patent: 3942010 (1976-03-01), Peterson et al.
patent: 4280137 (1981-07-01), Ashida et al.
patent: 4427306 (1984-01-01), Adamson
patent: 4435149 (1984-03-01), Astheimer
Lillquist Robert D.
Lober Richard W.
Menzies Richard G.
Cutter Lawrence D.
Davis Jr. James C.
General Electric Company
Paschall M. H.
Snyder Marvin
LandOfFree
Infrared sensor for the control of plasma-jet spray coating and does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Infrared sensor for the control of plasma-jet spray coating and , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Infrared sensor for the control of plasma-jet spray coating and will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1088024