公开(公告)号：US12264389B2

公开(公告)日：2025-04-01

申请号：US18410257

申请日：2024-01-11

Applicant: PROTERIAL, LTD.

Inventor： Hajime Itagaki ,  Morifumi Kuroki ,  Makoto Sasaki ,  Shin Nakajima

IPC: C22C45/00 ,  B23K26/362 ,  C21D8/12 ,  C22C45/02 ,  H01F1/153 ,  H01F27/25 ,  H01F27/255 ,  H01F30/10 ,  H01F30/12

Abstract: An Fe-based amorphous alloy ribbon reduced in iron loss, less deformed, and highly productive in a condition of a magnetic flux density of 1.45 T is provided. One aspect of the present disclosure provides an Fe-based amorphous alloy ribbon having first and second surfaces, and is provided with continuous linear laser irradiation marks on at least the first surface. Each linear laser irradiation mark is formed along a direction orthogonal to a casting direction of the Fe-based amorphous alloy ribbon, and has unevenness on its surface. When the unevenness is evaluated in the casting direction, a height difference HL×width WA calculated from the height difference HL between a highest point and a lowest point in a thickness direction of the Fe-based amorphous alloy ribbon and the width WA which is a length of the linear irradiation mark on the first surface is 6.0 to 180 μm2.

公开(公告)号：US11952651B2

公开(公告)日：2024-04-09

申请号：US17620284

申请日：2020-06-24

Applicant: PROTERIAL, LTD.

Inventor： Hajime Itagaki ,  Morifumi Kuroki ,  Makoto Sasaki ,  Shin Nakajima

IPC: C22C45/00 ,  B23K26/362 ,  C21D8/12 ,  C22C45/02 ,  H01F1/153 ,  H01F27/25 ,  H01F27/255 ,  H01F30/10 ,  H01F30/12

CPC classification number: C22C45/008 ,  B23K26/362 ,  C21D8/1294 ,  C22C45/02 ,  H01F1/15308 ,  H01F27/25 ,  H01F27/255 ,  H01F30/10 ,  H01F30/12

Abstract: An Fe-based amorphous alloy ribbon reduced in iron loss, less deformed, and highly productive in a condition of a magnetic flux density of 1.45 T is provided. One aspect of the present disclosure provides an Fe-based amorphous alloy ribbon having first and second surfaces, and is provided with continuous linear laser irradiation marks on at least the first surface. Each linear laser irradiation mark is formed along a direction orthogonal to a casting direction of the Fe-based amorphous alloy ribbon, and has unevenness on its surface. When the unevenness is evaluated in the casting direction, a height difference HL×width WA calculated from the height difference between a highest point and a lowest point in a thickness direction of the Fe-based amorphous alloy ribbon and the width WA which is a length of the linear irradiation mark on the first surface is 6.0 to 180 μm2.

公开(公告)号：US11728076B2

公开(公告)日：2023-08-15

申请号：US17529953

申请日：2021-11-18

Applicant: Proterial, Ltd.

Inventor： Hajime Itagaki ,  Atsuhiro Noguchi ,  Morifumi Kuroki ,  Makoto Sasaki

IPC: H01F1/153 ,  C22C45/02 ,  H01F3/04 ,  H01F41/02

CPC classification number: H01F1/15308 ,  C22C45/02 ,  H01F1/15341 ,  H01F3/04 ,  H01F41/0226

Abstract: A method of producing a laminated amorphous alloy ribbon holding spool. The method includes providing amorphous alloy ribbon holding spools, each of which is wound with a single layer amorphous alloy ribbon, unwinding the single layer amorphous alloy ribbon from each of the amorphous alloy ribbon holding spools, making the single layer amorphous alloy ribbon travel with a laser being radiated thereto, to thereby simultaneously prepare single layer amorphous alloy ribbons having laser irradiation mark formed thereon, laminating the single layer amorphous alloy ribbons having the laser irradiation mark formed thereon to, thereby prepare a laminated amorphous alloy ribbon, and winding up the laminated amorphous alloy ribbon on a spool.

公开(公告)号：US12002607B2

公开(公告)日：2024-06-04

申请号：US17043477

申请日：2019-03-29

Applicant: Proterial, Ltd.

Inventor： Hajime Itagaki ,  Motoki Ohta ,  Morifumi Kuroki ,  Makoto Sasaki

IPC: H01F1/153 ,  C22C45/02 ,  H01F27/25 ,  H01F41/02

CPC classification number: H01F1/15308 ,  C22C45/02 ,  H01F1/15341 ,  H01F27/25 ,  H01F41/0226

Abstract: One aspect of the invention provides an Fe-based amorphous alloy ribbon having a free solidified surface and a roll contact surface, in which the Fe-based amorphous alloy ribbon has plural laser irradiation mark rows each formed from plural laser irradiation marks on at least one surface of the free solidified surface or the roll contact surface, a line interval is from 10 mm to 60 mm, which is a centerline interval in a middle section in a width direction, between mutually adjacent laser irradiation mark rows, a spot interval is from 0.10 mm to 0.50 mm, which is an interval between center points of the plural laser irradiation marks in each of the plural laser irradiation mark rows, and the number density D (=(1/d1)×(1/d2), d1: line interval, d2: spot interval) of the laser irradiation marks is from 0.05 marks/mm2 to 0.50 marks/mm2.

公开(公告)号：US11802328B2

公开(公告)日：2023-10-31

申请号：US17619756

申请日：2020-06-24

Applicant: PROTERIAL, LTD.

Inventor： Hajime Itagaki ,  Morifumi Kuroki ,  Makoto Sasaki ,  Shin Nakajima

IPC: C22C45/00 ,  C21D8/12 ,  B23K26/362 ,  C22C45/02 ,  H01F1/153 ,  H01F27/25 ,  H01F27/255 ,  H01F30/10 ,  H01F30/12

CPC classification number: C22C45/008 ,  B23K26/362 ,  C21D8/1294 ,  C22C45/02 ,  H01F1/15308 ,  H01F27/25 ,  H01F27/255 ,  H01F30/10 ,  H01F30/12

Abstract: An Fe-based amorphous alloy ribbon reduced in an iron loss in a condition of a magnetic flux density of 1.45 T is provided. One aspect of the present disclosure provides an Fe-based amorphous alloy ribbon. The Fe-based amorphous alloy ribbon has continuous linear laser irradiation marks on at least one surface. The linear laser irradiation marks are formed along a direction orthogonal to a casting direction of the Fe-based amorphous alloy ribbon. Each linear laser irradiation mark has unevenness on its surface. When the unevenness is evaluated in the casting direction, a difference HL between a highest point and a lowest point in the thickness direction of the Fe-based amorphous alloy ribbon is 0.25 μm to 2.0 μm.