(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

(21) Application number: 88420277.1

(22) Date of filing: 04.08.1988
(51) International Patent Classification (IPC)4C22C 1/02, C22C 1/03
(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)


(56) References cited: : 
   
       


    (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.





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