Process for the production of metallic semi-finished products

Details Process for the production of metallic semi-finished products Process for the production of metallic semi-finished products

1985-07-15

1986-10-28

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

C22B 400

Patent

active

046196927

ABSTRACT:
A process for the production of metallic semi-finished products which contains one or several alloys and has at least two zones with different nitrogen content. An electrode is remelted by pressure electroslag remelting, wherein the remelting process occurs in at least two steps, in each of which differing amounts of nitrogen in the form of solid nitrogen donators are added to the melt, and wherein the pressure produced by a nitrogen- or noble gas-atmosphere is changed from remelting step to remelting step in a range of 5 to 50 bar.

REFERENCES:
patent: 3257197 (1966-06-01), Death
patent: 3723630 (1973-03-01), Paton
patent: 3989091 (1976-11-01), Medovar

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