Kojiro Hori

Introduction: Kojiro Hori, based in Tokyo, Japan, is a prominent inventor in the field of materials science, particularly known for his contributions to the development of non-oriented electrical steel sheets. With a total of four patents to his name, Hori is a key figure at Nippon Steel & Sumitomo Metal Corporation, where he continues to push the boundaries of innovation in electrical materials.

Latest Patents: One of Hori's latest patents focuses on a non-oriented electrical steel sheet, which comprises specific mass percentages of various elements, including carbon (C: 0.005% or less), silicon (Si: 0.1% to 2.0%), manganese (Mn: 0.05% to 0.6%), phosphorus (P: 0.100% or less), and aluminum (Al: 0.5% or less). This innovation includes a structure characterized by a maximum number density of ten pieces per micrometer or less of non-magnetic precipitate AlN, with an average diameter ranging from 10 nm to 200 nm. Additionally, the steel sheet demonstrates an impressive average magnetic flux density (B50) of 1.75 T or more in both the rolling direction and direction perpendicular to rolling. The manufacturing process for this sheet involves two distinct methods: hot rolling annealing at a temperature of 750°C to the Ac1 transformation point and a self-annealing process involving coil winding at a temperature of 780°C or higher.

Career Highlights: Kojiro Hori has made significant strides in his career, particularly through his work at Nippon Steel & Sumitomo Metal Corporation. His innovations have not only enhanced the efficiency and performance of electrical steel products but have also contributed to the company's reputation as a leader in materials engineering.

Collaborations: Throughout his journey, Hori has collaborated with esteemed colleagues such as Masahiro Fujikura and Yoshiyuki Ushigami, further enriching the research and development efforts within the company. These partnerships have facilitated the exchange of ideas and expertise, ultimately leading to groundbreaking advancements in electrical steel technology.

Conclusion: Kojiro Hori stands as a vital contributor to the field of electrical materials, with his patents reflecting a commitment to innovation and excellence. As he continues to develop new technologies at Nippon Steel & Sumitomo Metal Corporation, his work promises to have a lasting impact on various industries that rely on electrical steel products.