Nippon Steel Corporation

Masao Yamamiya

Hidemaro Takeuchi

Shogo Matsumura

Tokuhiko Nishida

Harumi Tsuboi

An Fe-Si alloy powder magnetic core comprises an alloy powder of an average particle diameter of 10-100 .mu.m, produced by water atomization, in which the composition by weight of the alloy powder is 2-12% silicon and 0.05-0.95% oxygen with the balance being essentially iron. The process of manufacturing the powder magnetic core is also disclosed.

Iron-silicon alloy powder magnetic cores and method of manufacturing the

A method of continuously casting lead-bearing steel by adding lead to steel melt in a tundish. The tundish is divided into a plurality of chambers including a melt receiving chamber and an immersed nozzle chamber, lead is supplied to the molten steel in a chamber other than the immersed nozzle chamber so as to form a lead sediment layer at the bottom thereof, and molten steel containing suspended Pb is passed to the immersed nozzle chamber from where it is poured into a mold of the continuous caster.

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Kawasaki, Japan

Masao Yamamiya