Toshimitsu Fujii

Title: Innovations by Toshimitsu Fujii

Introduction

Toshimitsu Fujii is a notable inventor based in Tokai, Japan. He has made significant contributions to the field of materials science, particularly in the development of steel shaft materials. His innovative approach has led to advancements that enhance the cuttability and induction hardenability of steel.

Latest Patents

Fujii holds a patent for a steel shaft material that is capable of being directly cut. This invention allows for a steel shaft material to maintain desirable properties even in the form of milled stock without requiring heat treatment, such as annealing. The patent details a specific composition of the steel ingot, which includes 0.38 to 0.45 wt. % of carbon, among other elements. The manufacturing method involves heating the ingot to 1,100°C or less, milling it at a finishing temperature of 950°C or below, and cooling it in the atmosphere. The resulting steel material exhibits a microstructure formed of ferrite and lamellar pearlite, with specific hardness and decarbonized depth characteristics.

Career Highlights

Fujii is associated with Daido Tokushuko Kabushiki Kaisha, where he has been instrumental in advancing steel material technologies. His work has not only contributed to the company's reputation but has also set new standards in the industry.

Collaborations

Fujii has collaborated with notable coworkers, including Kenji Isokawa and Sadayuki Nakamura. Their combined expertise has fostered an environment of innovation and development within their field.

Conclusion

Toshimitsu Fujii's contributions to steel material technology exemplify the impact of innovative thinking in engineering. His patent for a steel shaft material showcases his commitment to enhancing industrial processes and materials.