Proterial, Ltd.

Hitachi Metals, Ltd.

Morifumi Kuroki

Hajime Itagaki

Makoto Sasaki

Shin Nakajima

Motoki Ohta

Kenichiro Hara

Kohei Miyano

Atsuhiro Noguchi

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 μm.

Fe-based amorphous alloy ribbon, production method thereof, iron core, and transformer

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/mmto 0.50 marks/mm.

Fe-based amorphous alloy ribbon and method for producing same, iron core, and transformer

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 μm.

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 &#x3bc;m to 2.0 &#x3bc;m.

Fe-based amorphous alloy ribbon, iron core, and transformer

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.

Method of producing laminated amorphous alloy ribbon holding spool and method of producing iron core

The present invention achieves an object of continuously supplying a melt from a melt nozzle over a long period of time by adjusting the contents of Mn and S in an Fe&#x2014;B&#x2014;Si&#x2014;C-type amorphous alloy ribbon. An amorphous alloy ribbon of the present invention includes a composition containing Fe, Si, B, C, Mn, S, and inevitable impurities, the composition containing, with respect to 100.0 atm % of the total amount of Fe, Si, B, and C, 3.0 atm % or more and 10.0 atm % or less of Si, 10.0 atm % or more and 15.0 atm % or less of B, and 0.2 atm % or more and 0.4 atm % or less of C, the amorphous alloy ribbon having a content ratio of Mn of more than 0.12 mass % and less than 0.15 mass %, and a content ratio of S of 0.0036 mass % or more and less than 0.0045 mass %, the amorphous alloy ribbon having a thickness of 10 &#x3bc;m or more and 40 &#x3bc;m or less, and a width of 100 mm or more and 300 mm or less.

Amorphous alloy ribbon and method for manufacturing same

A process for manufacturing a reclaimed alloy material includes the steps of crushing a magnetic core including an amorphous alloy ribbon; putting a prepared organic solvent and crushed pieces obtained in the step of crushing into a container and putting the crushed pieces into contact with the organic solvent in the container; selectively discharging the organic solvent from the container after putting the crushed pieces into contact with the organic solvent; and evaporating, after discharging the organic solvent, the organic solvent remaining in the container. The crushed pieces, removed from the container after the organic solvent is evaporated, is reused as a reclaimed alloy material.

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Tokyo, Japan

Morifumi Kuroki