WIDE AMORPHOUS ALLOY FOIL FOR POWER TRANSFORMER IRON CORE

Title:

WIDE AMORPHOUS ALLOY FOIL FOR POWER TRANSFORMER IRON CORE

Document Type and Number:

Japanese Patent JPH09143640

Kind Code:

A

Abstract:

To stably obtain a wide amorphous alloy foil excellent in magnetic properties, thermal stability, workability, etc., having superior manufacturability, and useful as iron core for power transformer.

This foil is an amorphous alloy foil having a composition represented essentially by chemical formula FeaBbSicC, where (a), (b), (c), and (d) satisfy, by atomic %, 78.5≤a≤81, 9.5≤b≤13, 8≤c≤12.5, and 0.4≤d≤1.5, respectively. This foil is cast by means of single-roll liquisol quenching in an atmosphere containing ≥40vol.% carbon dioxide gas, and further, the as-cast width is regulated to ≥70mm and also the value of center line average height Ra of the contact surface with a roll is regulated to ≤0.7μm.

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Inventors:

OKABE SEIJI
KOGIKU FUMIO
YUKIMOTO MASAO

Application Number:

JP30252595A

Publication Date:

June 03, 1997

Filing Date:

November 21, 1995

Export Citation:

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Assignee:

KAWASAKI STEEL CO

International Classes:

C22C38/02; B22D11/06; C22C45/02; H01F1/153; H01F1/16; (IPC1-7): C22C45/02; B22D11/06; C22C38/02; H01F1/16

Domestic Patent References:

JPH06264197A	1994-09-20
JPH05222493A	1993-08-31

Attorney, Agent or Firm:

Akihide Sugimura (4 outside)

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