Metals processing control by counting molten metal droplets

Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

75 1024, 75386, C21B 1110

Patent

active

060198117

ABSTRACT:
Apparatus and method for controlling metals processing (e.g., ESR) by melting a metal ingot and counting molten metal droplets during melting. An approximate amount of metal in each droplet is determined, and a melt rate is computed therefrom. Impedance of the melting circuit is monitored, such as by calculating by root mean square a voltage and current of the circuit and dividing the calculated current into the calculated voltage. Analysis of the impedance signal is performed to look for a trace characteristic of formation of a molten metal droplet, such as by examining skew rate, curvature, or a higher moment.

REFERENCES:
patent: 5348566 (1994-09-01), Sawyer et al.
patent: 5617911 (1997-04-01), Sterett et al.
EPRI(Electric Power Research Institute), "Electroslag Processing: State-of-the-Art Assessment," EPRI EM--4992 Project 2570-1, Center for Metals Production, Pittsburgh PA (Oct. 1987) pp S-1--9-1).
Ballantyne, A.S., et al., "The Influence of Melting Rate on Structure in VAR and ESR Ingots," reference source: Proc. 5.sup.th International Conf. Voc. Met. & ESR, pp 181-183 (No month, 1976).
Mitchell, A., "Process Limitations of ESR and VAR for high-Quality Allows", Prespectives in Metalurgical Development, Pul: The Metals Society, London, Sheffield, England Jul. 16-18, 1984 (pp 89-98).
Mitchell, A., "Theory and Practice of Electroslag Melting", Journ of Vacuum Sci and Tech, vol. 7, No. 8, pp 863-873 (Nov. -Dec. 1970).
Mitchell, A., "Factors Affecting Solidification and ingot Temperatures in ESR," 39.sup.th Electric Furnace Conf Proc, Electric Furnace Div, Iron and Steel Soc(AIMM & P Eng.), vol. 39 pp 569-598 (Apr. 23-27, 1979).

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Metals processing control by counting molten metal droplets does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Metals processing control by counting molten metal droplets, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Metals processing control by counting molten metal droplets will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-934182

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.