Title:
PRODUCTION METHOD FOR FE-BASED AMORPHOUS ALLOY POWDER
Document Type and Number:
WIPO Patent Application WO/2021/181512
Kind Code:
A1
Abstract:
A method for producing an Fe-based amorphous alloy powder, the method comprising: an embrittlement step for heating and embrittling an aggregate body of a foil-shaped Fe-based amorphous alloy; a disintegrating step for roughly fracturing the aggregate body; a screening step for screening the resultant disintegrated bodies for a predetermined size using a screening means to obtain small pieces of the Fe-based amorphous alloy; and a pulverization step for subjecting the small pieces of the Fe-based amorphous alloy to dry pulverization using a pulverization means, wherein the screening means includes a cylindrical body having a large number of through-holes, the cylindrical body is rotated about an axis with the disintegrated bodies placed inside the cylindrical body so that the disintegrated bodies are disintegrated into separate foils, which are in turn divided into small pieces and are caused to pass through the through-holes formed in the cylindrical body.
Inventors:
NISHIMURA KAZUNORI (JP)
KATO TETSURO (JP)
NAKATA SHINICHI (JP)
KATO TETSURO (JP)
NAKATA SHINICHI (JP)
Application Number:
PCT/JP2020/010225
Publication Date:
September 16, 2021
Filing Date:
March 10, 2020
Export Citation:
Assignee:
HITACHI METALS LTD (JP)
International Classes:
B22F9/04; B22D11/06; H01F1/153
Foreign References:
| JPH05335129A | 1993-12-17 | |||
| CN107578877A | 2018-01-12 |
Attorney, Agent or Firm:
TAKAISHI Kitsuma (JP)
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