Aperam has filed a patent for a method to manufacture a FeCo-alloy cold-rolled strip or sheet with specific composition and processing steps. The invention aims to produce a magnetic part, like a core, with improved properties. The method involves hot-rolling, cold-rolling, and annealing processes to achieve desired characteristics. GlobalData’s report on Aperam gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData’s company profile on Aperam, Hydrogen fuel cells was a key innovation area identified from patents. Aperam's grant share as of January 2024 was 47%. Grant share is based on the ratio of number of grants to total number of patents.

Manufacturing method for cold-rolled feco-alloy strip or sheet

Source: United States Patent and Trademark Office (USPTO). Credit: Aperam SA

A patent application (Publication Number: US20240035139A1) outlines a method for manufacturing a cold-rolled strip or sheet of substantially equiatomic FeCo-alloy. The process involves preparing a hot-rolled strip or sheet with specific composition percentages, followed by cold-rolling steps and intermediate annealing to achieve desired thickness and recrystallization levels. The method includes additional cycles of cold-rolling and annealing, hyper-quenching, and final annealing steps to ensure complete recrystallization of the alloy. The patent also details the composition and texture requirements for the FeCo-alloy, emphasizing specific disorientation limits for various texture components.

Furthermore, the patent application includes claims related to the composition and processing of the FeCo-alloy, as well as the manufacturing of magnetic pieces and cores from the alloy. Specific percentages of various elements in the alloy, such as Co, Si, and Cr, are outlined, along with requirements for achieving a completely recrystallized microstructure and specific texture components. The method described in the patent aims to produce high-quality cold-rolled strips or sheets of equiatomic FeCo-alloy with controlled texture characteristics, suitable for applications in magnetic cores and other magnetic components. The detailed steps and requirements outlined in the patent application provide a comprehensive guide for manufacturers looking to produce such materials with specific properties and performance characteristics.

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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies