Aperam

Rémy Batonnet

Thierry Waeckerle

Thierry Baudin

Olivier Hubert

Anne-Laure Helbert

Sheet or strip of cold-rolled and annealed ferrous alloy (1), characterized in that its composition is, in weight percentages: traces&#x2264;Co&#x2264;40%; if Co&#x2265;35%, traces&#x2264;Si&#x2264;1.0%; if traces&#x2264;Co&#x3c;35%, traces&#x2264;Si&#x2264;3.5%; if traces&#x2264;Co&#x3c;35%, Si+0.6% Al&#x2264;4.5&#x2212;0.1% Co; traces&#x2264;Cr&#x3c;10%; traces&#x2264;V+W+Mo+Ni&#x2264;4%; traces&#x2264;Mn&#x2264;4%; traces Al&#x2264;3%; traces&#x2264;S&#x2264;0.005%; traces&#x2264;P&#x2264;0.007%; traces&#x2264;Ni&#x2264;3%; traces&#x2264;Cu&#x2264;0.5%; traces&#x2264;Nb&#x2264;0.1%; traces&#x2264;Zr&#x2264;0.1%; traces&#x2264;Ti&#x2264;0.2%; traces&#x2264;N&#x2264;0.01%; traces&#x2264;Ca&#x2264;0.01%; traces&#x2264;Mg&#x2264;0.01%; traces&#x2264;Ta&#x2264;0.01%; traces&#x2264;B&#x2264;0.005%; traces&#x2264;O&#x2264;0.01%; the remainder being iron and impurities resulting from the preparation, in that, for an induction of 1.8 T, the maximum difference (Max &#x394;&#x3bb;) between the magnetostriction deformation amplitudes &#x3bb;, measured parallel to the magnetic field (Ha) applied (&#x3bb;/H) and perpendicular to the magnetic field (Ha) applied (&#x3bb;H) on three rectangular samples (2, 3, 4) of the said sheet or strip whose long sides are respectively parallel to the direction of rolling (DL) of the said sheet or strip, parallel to the transverse direction (DT) of the said sheet or strip, and parallel to the direction forming an angle of 45&#xb0; with the said rolling direction (DL) and the said transverse direction (DT), being at most 25 ppm, and in that its recrystallization rate is 80 to 100%. Method of manufacturing such a sheet or strip, transformer magnetic core made from it and a transformer comprising it.

FeCo alloy, FeSi alloy or Fe sheet or strip and production method thereof, magnetic transformer core produced from said sheet or strip, and transformer comprising same

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:  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&#xb0; C. Strip obtained.

Process for manufacturing a thin strip made of 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: 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&#xb0; C. Strip obtained.

Growing community of inventors

Decise, France

Rémy Batonnet