Patent · US Active

Method of producing a CoFe alloy strip

US12110579B2 · kind B2 · utility

0Cited by

4References

26Claims

0Family size

Assignee

Vacuumschmelze GmbH & Co. KG · DE

Inventors

Niklas Volbers · Bruchköbel, DE
Manuel Demper · Dautphe, DE
Joachim Gerster · Alzenau, DE

Key dates

Filing date	Aug 9, 2021
Grant date	Oct 8, 2024
Priority date	—
Expiry date	Aug 9, 2041

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC22C2202/02
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A method of producing a CoFe alloy strip is provided. The method comprises hot rolling a CoFe alloy to form a hot rolled strip, followed by quenching the strip from a temperature above 700° C. to a temperature of 200° C. The CoFe alloy comprises an order/disorder temperature To/d and a ferritic/austenitic transformation temperature Tα/γ, wherein Tα/γ>To/d. The method further comprises cold rolling the hot rolled strip, after cold rolling, continuous annealing the strip at a maximum temperature T1, wherein 500° C.<T1<To/d, followed by cooling at a cooling rate R1 of at least 1 K/s in the temperature range of T1 to 500° C., and after continuous annealing, magnetic annealing the strip, or parts manufactured from the strip, at a temperature between 730° C. and Tα/γ.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.