ArcelorMittal has filed a patent for a process to manufacture press-hardened laser-welded steel parts. The method involves specific compositions, pre-coatings, laser welding, heating, forming, and cooling steps to achieve the desired properties. The process aims to enhance the strength and durability of the steel parts. GlobalData’s report on ArcelorMittal 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 ArcelorMittal, Photovoltaic roof tiles was a key innovation area identified from patents. ArcelorMittal's grant share as of January 2024 was 64%. Grant share is based on the ratio of number of grants to total number of patents.

Manufacturing press hardened laser welded steel parts

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

The patent application (Publication Number: US20240035109A1) describes a process for manufacturing press hardened laser welded steel parts. The process involves providing first and second steel sheets with specific compositions and precoatings, laser welding them to create a welded blank, heating the blank at a specific temperature and duration, transferring it to a forming press, hot forming it, and cooling it at specific cooling rates in different temperature ranges. The process aims to produce press hardened laser welded steel parts with specific properties and characteristics.

Additionally, the patent application includes specific claims related to the holding duration during heating, the method of removing the aluminum precoating, the type of laser used for ablation and welding, as well as the composition of the steel sheets. The application also extends to the manufactured press hardened laser welded steel parts and their application in structural or safety parts for vehicles. The detailed process outlined in the patent application aims to optimize the manufacturing of these steel parts to meet desired specifications and performance requirements, particularly in the automotive industry where structural integrity and safety are crucial.

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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