(19) |
 |
|
(11) |
EP 0 302 803 A3 |
(12) |
EUROPEAN PATENT APPLICATION |
(88) |
Date of publication A3: |
|
18.10.1989 Bulletin 1989/42 |
(43) |
Date of publication A2: |
|
08.02.1989 Bulletin 1989/06 |
(22) |
Date of filing: 04.08.1988 |
|
|
(84) |
Designated Contracting States: |
|
DE FR GB |
(30) |
Priority: |
07.08.1987 US 82579
|
(71) |
Applicant: HOWMET CORPORATION |
|
Greenwich, CT 06830 (US) |
|
(72) |
Inventors: |
|
- Mihalisin, John Raymond
N. Caldwell
New Jersey 07006 (US)
- Tripucka, Michelle Kriley
Mountain Lakes
New Jersey 07046 (US)
|
(74) |
Representative: Séraphin, Léon et al |
|
PECHINEY
28, rue de Bonnel 69433 Lyon Cedex 03 69433 Lyon Cedex 03 (FR) |
|
|
|
(54) |
Method of making high melting point alloys |
(57) A method of making high melting point alloys. The reactive and non-reactive charge
materials are separately refined as initial alloys, generally as an alloy of a base
element selected from the iron group of the Periodic Table, such as nickel, and at
least one metallic element other than the base element. At least one first initial
alloy and at least one second initial alloy are provided. The metallic elements other
than the base element in the first initial alloys are relatively non-reactive in the
molten state, whereas the metallic elements in the second initial alloys are relatively
reactive in the molten state. Amounts of the first and second initial alloys are selected
to yield a predetermined composition of the high melting point alloy upon melting.
The selected amounts are melted to form a molten mixture having the predetermined
composition, and then the molten mixture is solidified.