Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1995-10-02
1997-07-22
Andrews, Melvyn
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75 1025, 75 1026, 164 5, C22B 400
Patent
active
056499930
ABSTRACT:
A method for the recycling of overspray powder during spray forming is provided. The method involves providing a refining vessel to contain an electroslag refining layer floating on a layer of molten refined metal. An ingot of unrefined metal is lowered into the vessel into contact with the molten electroslag layer. A current is passed through the slag layer to the ingot to cause surface melting at the interface between the ingot and the electroslag layer. As the ingot is surface melted at its point of contact with the slag, droplets of the unrefined metal are formed and these droplets pass down through the slag and are collected in a body of molten refined metal beneath the slag. The refined metal is held within a cold hearth. At the bottom of the cold hearth, a cold finger orifice permits the withdrawal of refined metal from the cold hearth apparatus. The refined metal passes from the cold finger orifice as a stream. The stream is atomized for spray forming into a preform article on a spray collection station having a solid receiving surface for receiving the atomized metal thereon to form the preform article. The powder produced during the atomization which was not deposited on the solid receiving surface of the spray collection station is recycled onto the top of the molten slag in the electroslag refining station.
REFERENCES:
patent: 2837790 (1958-12-01), Rozian
patent: 3356489 (1967-12-01), Feichtinger
patent: 3519059 (1970-07-01), Voskoboinikov et al.
patent: 3650518 (1972-03-01), Moffatt
patent: 3779743 (1973-12-01), Olsson et al.
patent: 3817503 (1974-06-01), Lafferty
patent: 3826301 (1974-07-01), Brooks
patent: 3868987 (1975-03-01), Galey
patent: 3909921 (1975-10-01), Brooks
patent: 3951577 (1976-04-01), Okayama et al.
patent: 3988084 (1976-10-01), Esposito et al.
patent: 4575325 (1986-03-01), Duerig et al.
patent: 4619597 (1986-10-01), Miller
patent: 4619845 (1986-10-01), Ayers et al.
patent: 4631013 (1986-12-01), Miller
patent: 4775000 (1988-10-01), Ayers
patent: 4779802 (1988-10-01), Coombs
patent: 4801412 (1989-01-01), Miller
patent: 4926923 (1990-05-01), Brooks et al.
patent: 4926924 (1990-05-01), Brooks et al.
patent: 5004153 (1991-04-01), Sawyer
patent: 5160532 (1992-11-01), Benz et al.
patent: 5196049 (1993-03-01), Coombs et al.
patent: 5325906 (1994-07-01), Benz et al.
patent: 5348566 (1994-09-01), Sawyer et al.
patent: 5366204 (1994-11-01), Gigliotti, Jr. et al.
Benz Mark Gilbert
Carter, Jr. William Thomas
Dupree Paul Leonard
Knudsen Bruce Alan
Zabala Robert John
Andrews Melvyn
General Electric Company
Johnson Noreen C.
Pittman William H.
LandOfFree
Methods of recycling oversray powder during spray forming does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Methods of recycling oversray powder during spray forming, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods of recycling oversray powder during spray forming will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1557708