DMC Global. has been granted a patent for a dissimilar metal article featuring a transition joint that bonds two metallic components. The design includes an additive flow material that strengthens the joint and intermixes with both components, enhancing the overall structural integrity of the assembly. GlobalData’s report on DMC Global 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 DMC Global, Aircraft ultrasonic inspection was a key innovation area identified from patents. DMC Global's grant share as of July 2024 was 44%. Grant share is based on the ratio of number of grants to total number of patents.

Dissimilar metal article with strengthened transition joint

Source: United States Patent and Trademark Office (USPTO). Credit: DMC Global Inc

The granted patent US12055186B2 describes a dissimilar metal article that integrates a first metallic component, typically made of steel or a steel alloy, with a second metallic component, generally composed of aluminum or an aluminum alloy. The two components are bonded through a transition joint, which can be formed using methods such as friction stir welding. A distinctive feature of this invention is the collar made from an additive flow material that intermixes with both metallic components at the joint, enhancing the structural integrity of the assembly. The collar not only bonds to the first and second components but also extends circumferentially around them, providing additional support.

The patent further details various configurations and manufacturing methods for the dissimilar metal article. For instance, the first metallic component may include multiple layers, such as a cladded interlayer created through explosion welding. The design allows for physical interlocking through machined recesses and corresponding projections on the collar. The method of manufacturing involves aligning the components, forming the transition joint, and distributing the additive flow material to create the collar. This innovative approach aims to improve the performance and durability of metal articles that require the combination of different metallic properties, particularly in applications where strength and lightweight characteristics are essential.

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GlobalData’s Patent Analytics tracks patent filings and grants from official offices around the world. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.