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AssigneeNippon Mining & Metals Co., Ltd.
InventorsNorio Yuki, Yoshihisa Kita
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Disclosed are Fe-Ni alloys used for electron gun parts and press punched electron guns, typically a electron gun electrode manufactured by press punching, comprising: all by weight, 30 to 55% of Ni; 0.0010 to 0.0200% of S; 0.1 to 0.8% of Mn; no more than 0.3% of Si; no more than 0.05% of Al; no more than 0.005% of O; and the balance of substantially Fe and inevitable impurities; said alloy preferably having a crystal grain size of not less than 7.0 in grain size number based on JIS G 0551. When oxide-type inclusions are included, Mn and S which form MnS combine with the oxide-type inclusions, so that MnS which is effective for improvement of punching properties do not sufficiently precipitate. Therefore, the invention controls contents of elements forming oxides in proper ranges.
An Fe-Ni alloy for electron gun parts comprising, by weight:
A press punched electron gun part manufactured from an Fe-Ni alloy comprising, by weight:
An electron gun electrode manufactured from an Fe-Ni alloy comprising, by weight:
An Fe-Ni alloy used for electron gun parts comprising, by weight:
A press punched electron gun part manufactured from an Fe-Ni alloy comprising, by weight:
An electron gun electrode manufactured from an Fe-Ni alloy comprising, by weight:
Dependencies are inferred from the claim text.