S-containing Fe--Ni alloys for electron gun parts and punched el

Details S-containing Fe--Ni alloys for electron gun parts and punched el S-containing Fe--Ni alloys for electron gun parts and punched el

1997-11-18

1999-04-06

Phipps, Margery

Metal treatment

Stock

Ferrous

148336, 148426, 313633, H01J 1704, C22C 3808, C22C 1903

Patent

active

058912711

ABSTRACT:
Fe--Ni alloys for electron gun parts consisting of, all by weight, 30-55% Ni, 0.0010-0.200% S, up to 0.8% Mn, from not less than 0.005 to less than 0.5% in total of one or more elements selected from the group consisting of Ti, Mg, Ce and Ca, and the balance substantially Fe and unavoidable impurities, and electron gun parts, typically electron gun electrodes, made of the alloys by punching are provided. Controlling the grain size number to No. 7.0 or above is also effective. The Fe--Ni alloys of this invention for electron gun parts are remarkably improved in press punchability and can solve burring problems through the easy formation of sulfide inclusions of Ti, Mg, Ce, and Ca.

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