Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1985-01-25
1987-02-10
Lin, Kuang Y.
Metal founding
Process
Shaping liquid metal against a forming surface
164469, 164488, 164136, 164494, B22D 1122
Patent
active
046417044
ABSTRACT:
A method is described for continuously casting an ingot of a metal alloy of the type having a substantial liquidus-solidus temperature range so that the ingot will have a "smooth" surface free of hot-tears. A succession of substantially equal volume quantities of the molten alloy is poured into a continuous casting mold at a pressure of less than about 10.sup.-3 Torr. The quantity of each pour is sufficient to cover the entire cross section of the mold by flow under the influence of gravity and each quantity is allowed to substantially solidify between pours to form successive axial increments which make up the ingot. Each increment is allowed to cool for at least about 30 seconds between pours to form a sufficiently solid side-wall to prevent hot-tears. Heat is extracted between each successive pour from the annular region of the last poured increment adjacent the mold to permit the ingot being formed to be lowered in the mold without hot-tearing the ingot side-walls while maintaining the entire upper surface of the immediately preceding increment at a temperature at which metallurgical bonding with the last increment can occur. Before each successive pouring, the partially formed ingot is lowered in the mold a distance substantially equal to the increment thickness.
REFERENCES:
patent: 3343828 (1967-09-01), Hunt
patent: 3658116 (1972-04-01), Hunt
patent: 3948650 (1976-04-01), Flemings et al.
patent: 3951651 (1976-04-01), Mehrabian et al.
patent: 3954455 (1976-05-01), Flemings et al.
patent: 4089680 (1978-05-01), Flemings et al.
patent: 4261412 (1981-04-01), Soykan et al.
H. Stephen, W. Dietrich, "Production of Superclean Material for Electronic and Power-Generator Application", Leybold-Heraeus GmbH, German Efficiency Show Japan 1984.
H. Stephan, H. Aichert, W. Dietrich, J. Heimerl, R. Schumann, "Some Results on Computer Controlled and Automated Production of Ingots From Refractory and Reactive Metals and Very Clean, Fine Grain Nickel-Base Superalloys", Leybold-Heraeus Technologies, Inc., Conference About Electron Beam Melting and Refining, State of the Art 1983, Reno, Nevada.
H. Stephan, H. Aichert, W. Dietrich, J. Heimerl, R. Schumann "Transformation of Process and Production Values From 60 and 100 kW EB-Power Melting Furnace into Pilot and Production Plants of 1200 kW and 800 kW EB-Power", Leybold-Heraeus Technologies, Inc., International Industrial Seminar on Pilot Plant Experiences-Melting and Processing Technology, Hilton Head, S.C., Oct. 10-12, 1983.
Merton C. Flemings "Solidification Processing", Mc-Graw-Hill, 1974.
Degussa Electronics Inc.
Lin Kuang Y.
LandOfFree
Continuous casting method and ingot produced thereby does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Continuous casting method and ingot produced thereby, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Continuous casting method and ingot produced thereby will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2359023