Title:
【発明の名称】微結晶鉄ベース合金から成る漏電遮断器用磁心材料
Document Type and Number:
Japanese Patent JP2563097
Kind Code:
B2
Abstract:
In magnetic core materials for fault current protective switches, a high constancy of the magnetic properties is required over the entire application temperature range from -25 DEG C to +80 DEG C. In the case of the known magnetic core materials with a high nickel content of the permalloy type, this requires a special additional anneal. This can be dispensed with if the magnetic core material used is an iron-based alloy with an iron content of more than 60 atomic %, more than 50% of whose structure consists of fine crystalline grains having a grain size of less than 100 nm and which has a saturation induction of more than 1.1 T and also a remanence ratio of less than 0.7.
Inventors:
HANSUPEETAA HIRUCHINGAA
KURISUCHIAN RADEROTSUFU
GIZERUHAA HERUTSUAA
KURISUCHIAN RADEROTSUFU
GIZERUHAA HERUTSUAA
Application Number:
JP9196290A
Publication Date:
December 11, 1996
Filing Date:
April 06, 1990
Export Citation:
Assignee:
VACUUMSCHMELZE GMBH
International Classes:
H01F1/153; H01F1/14; H01H83/14; H02H3/33; (IPC1-7): H01F1/14
Domestic Patent References:
| JP6439347A |
Attorney, Agent or Firm:
Tomimura Kiyoshi