Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1983-06-21
1984-01-31
Lin, Kuang Y.
Metal founding
Process
Shaping liquid metal against a forming surface
164463, 164479, 164480, B22D 1106
Patent
active
044284160
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a method for manufacturing a multi-layer alloy consisting of a laminated body of different kinds of metals or alloys thereof and, more particularly, to a method for manufacturing a multi-layer amorphous alloy having at least one amorphous alloy layer.
BACKGROUND ART
Various multi-layer alloys for laminated bodies of different metals (to include alloys hereinafter) are known in various fields, for such applications as bimetals with two metals having different heat expansion ratios; cladding material consisting of beryllium copper which is excellent in mechanical strength, and a layer of a noble metal which is excellent in contact characteristics; magnetic wires consisting of beryllium copper and Permalloy (trade name); superconductive wires consisting of copper and a superconductive body; composite magnetic materials used in electronic switching machines; leads used in self-holding type lead switches and so on.
Recently, amorphous alloys obtained by rapidly cooling molten metal are receiving a lot of attention due to their particular electromagnetic and mechanical characteristics, and the application of such amorphous alloys in multi-layer alloys has been desired.
However, since conventional multi-layer alloys are manufactured by adhering two different kinds of metals by heating or pressing, electrodeposition, vacuum evaporation, plating, welding and so on, the process has been complex. Furthermore, the manufacture of a multi-layer alloy including an amorphous alloy has involved the problem that adhering by heating cannot be performed. Thus, an effective, practical means for manufacturing a multi-layer alloy including an amorphous alloy has not been discovered yet.
A method has recently been proposed according to which different kinds of molten metals are ejected on each of a pair of revolving rollers, and they are joined and adhered by the rollers for manufacturing a multi-layer amorphous alloy. However, according to this method, the distance between the nozzles for ejecting the two different kinds of metals must be made extremely small, obstructing the design, limiting the adhering conditions, and providing an impractical solution to the problem. Further, the joining of the two metal layers is performed only between a pair of rollers, so that the adhering time is short and the adhesion between the obtained layers of the multi-layer alloy is disadvantageously low.
The present invention has been made in consideration of this and has for its object to provide a method for manufacturing a multi-layer amorphous alloy in which the adhesion is improved, the feeding positions of the molten metals can be freely chosen without any problems, and at least one layer of amorphous alloy is included.
DISCLOSURE OF INVENTION
The present invention provides a method for manufacturing a multi-layer amorphous alloy having at least one layer of amorphous alloy, comprising the steps of ejecting a first molten metal on one of a pair of rollers rotating at a high speed or on a metal belt driven by the roller, and rotating the ejected metal with the rollers for rapid cooling; forming two molten metal layers on the rotating roller or belt by ejecting a second molten metal different from said first metal on said first molten metal for rapid cooling; and adhering under pressure and rolling said molten metal layers between said pair of rollers.
BRIEF DESCRIPTION OF DRAWINGS
FIG. 1 is a partial sectional view schematically illustrating a device for manufacturing a multi-layer amorphous alloy used in one embodiment of the present invention; and
FIGS. 2 and 3 are partial sectional views schematically illustrating a device for manufacturing a multi-layer amorphous alloy used in another embodiment of the present invention.
BEST MODE OF CARRYING OUT THE INVENTION
The present invention will now be described in more detail with reference to the accompanying drawings.
A device for carrying out the method of the present invention is shown in FIG. 1. Referring to FIG. 1, a first nozzl
REFERENCES:
patent: 1956467 (1934-04-01), Palm
patent: 3670400 (1972-06-01), Singer
patent: 4190095 (1980-02-01), Bedell
PCT/55PCT317 dated 4/12/80.
Inomata Koichiro
Shimanuki Senji
Lin Kuang Y.
Tokyo Shibaura Denki Kabushiki Kaisha
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