NON-ORIENTED MAGNETIC STEEL PLATE WITH HIGH MAGNETIC FLUX DENSITY/LOW IRON LOSS, WHICH IS SUPERIOR IN HEAT CONDUCTIVITY, AND ITS MANUFACTURE

Japanese Patent JP3492075

B2

PROBLEM TO BE SOLVED: To provide a material with high magnetic flux density and low iron loss, which is superior in heat conductivity, and to suppress the temperature risein a motor, by setting the component, the plate thickness and the heat conductivity of steel constituted of iron and inseparable impurities to be specified values.
SOLUTION: Steel contains C≤0.010%, 0.1≤Si≤0.2%, Mn≤1.0%, Al ≤0.85%, P≤0.15%, S≤0.01% and N≤0.005% in weight%, contains components constituted of one or more than two types of Sn:0.01%-0.40%, Cu:0.1-1.0% and Sb:0.005%-0.40% and has insuperable impurities of Fe in a remaining part, The non-oriented magnetic steel plate with high magnetic flux density and low iron loss, which is superior in heat conductivity, has the plate thickness of 0.25mm-0.45mm, has the heat conductivity of not less than 0.1cal/cm/sec/°C or reduces the iron loss W15/50 to the level not more than 6.00[W/kg] and improves the magnetic flux density B 50 to the level not less than 1.72T is provided. Thus, demands for core materials is the electric apparatus are made efficient and small can sufficiently be met.

Tomoyuki Abe
Tomoji Kumano
Masahiro Yamamoto
Kazufumi Hanzawa

JP9515896A

February 03, 2004

April 17, 1996

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Nippon Steel Corporation

C21D8/12; C22C38/00; C22C38/06; C22C38/60; H01F1/147; H01F1/16; (IPC1-7): H01F1/16; C21D8/12; C22C38/00; C22C38/06; C22C38/60

JP62180014A
JP5468716A
JP55158252A
JP5735626A

Takashi Ishida (3 others)

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