公开(公告)号：US11600439B2

公开(公告)日：2023-03-07

申请号：US16890954

申请日：2020-06-02

Applicant: APERAM

Inventor： Thierry Waeckerle ,  Rémy Batonnet

IPC: H01F41/02 ,  C22F1/16 ,  C21D8/12 ,  C22C30/00 ,  C22C19/07 ,  C22F1/10 ,  C21D6/00 ,  C22C38/12 ,  C22C38/10 ,  C22C38/00 ,  C22C38/42 ,  C22C38/48 ,  C22C38/46 ,  C22C38/16 ,  C22C38/04 ,  C22C38/02 ,  C22C38/52 ,  H01F1/16 ,  A63B23/14 ,  A63B21/00 ,  H01F1/147

Abstract: Method for manufacturing a thin strip in a soft magnetic alloy and strip obtained A method for manufacturing a strip in a soft magnetic alloy capable of being cut out mechanically, the chemical composition of which comprises by weight: 18% ≤ Co ≤ 55% 0% ≤ V + W ≤ 3% 0% ≤ Cr ≤ 3% 0% ≤ Si ≤ 3% 0% ≤ Nb ≤ 0.5% 0% ≤ B ≤ 0.05% 0% ≤ C ≤ 0.1% 0% ≤ Zr + Ta ≤ 0.5% 0% ≤ Ni ≤ 5% 0% ≤ Mn ≤ 2% The remainder being iron and impurities resulting from the elaboration, according to which a strip obtained by hot rolling is cold-rolled in order to obtain a cold-rolled strip with a thickness of less than 0.6 mm.
After cold rolling, a continuous annealing treatment is carried out by passing into a continuous oven, at a temperature comprised between the order/disorder transition temperature of the alloy and the onset temperature of ferritic/austenitic transformation of the alloy, followed by rapid cooling down to a temperature below 200° C. Strip obtained.

公开(公告)号：US11767583B2

公开(公告)日：2023-09-26

申请号：US15748577

申请日：2016-07-29

Applicant: APERAM

Inventor： Thierry Waeckerle ,  Thierry Baudin ,  Anne-Laure Helbert ,  Olivier Hubert ,  Rémy Batonnet

IPC: C22C38/10 ,  C22C38/02 ,  C22C38/06 ,  H01F1/18 ,  H01F41/02 ,  C22C38/18 ,  H01F1/147 ,  C22C38/30 ,  C22C38/52 ,  C21D8/12 ,  C21D1/76

CPC classification number: C22C38/10 ,  C21D1/76 ,  C21D8/1233 ,  C21D8/1266 ,  C21D8/1272 ,  C22C38/02 ,  C22C38/06 ,  C22C38/18 ,  H01F1/147 ,  H01F1/14783 ,  H01F1/18 ,  H01F41/0233 ,  C21D8/1222 ,  C21D2211/005 ,  C22C38/30 ,  C22C38/52

Abstract: Sheet or strip of cold-rolled and annealed ferrous alloy (1), characterized in that its composition is, in weight percentages: traces≤Co≤40%; if Co≥35%, traces≤Si≤1.0%; if traces≤Co

公开(公告)号：US20240035139A1

公开(公告)日：2024-02-01

申请号：US18265623

申请日：2020-12-09

Applicant: APERAM

Inventor： Thierry Waeckerle ,  Rémy Batonnet

IPC: C22F1/16 ,  C22C30/02 ,  C22F1/02 ,  C22F1/00 ,  H01F1/16

CPC classification number: C22F1/16 ,  C22C30/02 ,  C22F1/02 ,  C22F1/002 ,  H01F1/16 ,  C22C2202/02

Abstract: The invention relates to a substantially equiatomic FeCo-alloy cold-rolled strip or sheet, and to a magnetic part cut from same, as well as to a method for fabricating a Fe—Co-alloy cold-rolled strip or sheet. A fully recrystallized hot-rolled sheet or strip is prepared, with a thickness of 1.5-2.5 mm and the following composition: 47.0%≤Co≤51.0%; traces≤V+W≤3.0%; traces≤Ta+Zr≤0.5%; traces≤Nb≤0.5%; traces≤B≤0.05%; traces≤Si≤3.0%; traces≤Cr≤3.0%; traces≤Ni≤5.0%; traces≤Mn≤2.0%; traces≤O≤0.03%; traces≤N≤0.03%; traces≤S≤0.005%; traces≤P≤0.015; traces≤Mo≤0.3%; traces≤Cu≤0.5%; traces≤Al≤0.01%; traces≤Ti≤0.01%; traces≤Ca+Mg≤0.05%; traces≤rare earths≤500 ppm; the remainder being iron and impurities. A first cold-rolling step is carried out with a reduction rate of 70 to 90%, to bring the strip or sheet to a thickness of ≤1 mm. Intermediate annealing is carried out when running, leading to a partial recrystallization of the strip or sheet, running at a speed (V), and where its temperature, in the useful zone of the furnace of useful length (Lu), is between Trc and 900° C., the strip or sheet remaining therein for 15 s to 5 min at a temperature (T) such that 26° C.·min≤T−Trc)·Lu/V≤160° C. min. The strip or sheet is cooled to at least 600° C./hour. A second step of cold-rolling the annealed strip or sheet is carried out, with a reduction rate of 60 to 80%, to bring the strip or sheet to a thickness of 0.05 to 0.25 mm. And final annealing (Rf) of the cold-rolled strip or sheet is carried out to achieve complete recrystallization followed by cooling at 100 to 500° C./hour.
Magnetic part, such as a magnetic core, obtained from a strip or sheet manufactured by this method.