Koji Yagii

Title: Koji Yagii: Innovator in Flame-Spray Coating Technology

Introduction

Koji Yagii is a notable inventor based in Hiroshima, Japan. He has made significant contributions to the field of flame-spray coating technology, holding a total of 7 patents. His innovative methods have advanced the manufacturing processes in various industries.

Latest Patents

Yagii's latest patents include a method of producing a flame-spray-coated article and flame spraying. This method involves using a powder with a primary particle size of not larger than 10 µm, formed from a mixture of nickel (Ni) powder and chromium (Cr) powder, along with hard particles containing carbide. The powder is mixed with Cr₃C₂ powder, granulated, and sintered to create flame spraying powder with a secondary particle size of 5 to 53 µm. The resulting flame-sprayed coating achieves a porosity of not larger than 2% and a hardness of not lower than 700 (Hv: 200 g). Another patent focuses on a method for manufacturing a side housing for a rotary piston engine, which includes forming a flame-sprayed layer on the rotor sliding portion and an anodized layer on the remaining inner surface to prevent jamming during the abrading process.

Career Highlights

Throughout his career, Koji Yagii has worked with prominent companies such as Mazda Motor Corporation and Toyo Kogyo Co., Ltd. His experience in these organizations has allowed him to refine his skills and contribute to significant advancements in engineering and manufacturing.

Collaborations

Yagii has collaborated with notable coworkers, including Jun Miyata and Tsutomu Shimizu. These partnerships have fostered innovation and have been instrumental in the development of his patented technologies.

Conclusion

Koji Yagii's contributions to flame-spray coating technology and his innovative methods have made a lasting impact in the field. His work continues to influence manufacturing processes and engineering practices today.