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：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：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.