Daido Steel had eight patents in 3D printing during Q3 2023. Daido Steel Co Ltd has filed a patent for an additive manufacturing wire with specific composition requirements. The wire contains various elements such as Si, Mn, Ni, Cr, Mo, and N, with Fe and unavoidable impurities making up the rest. The composition satisfies certain conditions for carbon content (C=0.10%) and values of Creq and Nieq. The patent aims to improve the properties and performance of the additive manufacturing wire. GlobalData’s report on Daido Steel gives a 360-degreee view of the company including its patenting strategy. Buy the report here.

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Daido Steel grant share with 3D printing as a theme is 0% in Q3 2023. Grant share is based on the ratio of number of grants to total number of patents.

Recent Patents

Application: Additive manufacturing wire, additively-manufactured object, and additive manufacturing method (Patent ID: US20230220511A1)

The present invention is an additive manufacturing wire that contains specific compositions of various elements. The wire consists of 0% < Si = 2.0%, 0% < Mn = 6.0%, 3.0% = Ni = 15.0%, 20.0% = Cr = 30.0%, 1.0% = Mo = 5.0%, and 0% < N = 0.50% by mass, with the remaining composition being Fe and unavoidable impurities. The wire also satisfies the condition of C = 0.10% and 27 < A < 67, where Creq is defined as Cr+Mo+1.5Si+0.5(Nb+W)+2(Ti+Al), Nieq is defined as Ni+30C+20N+0.5(Mn+Cu+Co), and A is defined as -16.2+6.3Creq-9.3Nieq. The wire can further include 0.01% = Cu = 6.0% by mass. The invention also includes an additively-manufactured object obtained using this wire, which has a ferrite content of 30% by volume or more and 70% by volume or less. The additive manufacturing method using this wire involves performing additive manufacturing in a condition where the slowest cooling rate in the temperature range between 1,200°C and 800°C is 10°C/s or more and 140°C/s or less. The method can also include a heat treatment step on the additively-manufactured object at a temperature of 800°C or higher and 1,200°C or lower.

In summary, the present invention is an additive manufacturing wire with specific compositions of elements such as Si, Mn, Ni, Cr, Mo, and N. The wire satisfies certain conditions of C and A. It can also include Cu as an additional element. The invention also encompasses additively-manufactured objects obtained using this wire, which have a specific ferrite content. The additive manufacturing method using this wire involves performing additive manufacturing under specific cooling rate conditions and can include a heat treatment step.

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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 across the world’s largest industries.