Kosuke Shibairi

Title: Innovations by Kosuke Shibairi

Introduction

Kosuke Shibairi is a notable inventor based in Yokohama, Japan. He has made significant contributions to the field of spring manufacturing, showcasing his expertise through his innovative patent.

Latest Patents

Shibairi holds a patent for a spring and its manufacturing method. This spring is composed of specific mass percentages of various elements, including 0.5 to 0.7% of carbon (C), 1.0 to 2.0% of silicon (Si), 0.1 to 1.0% of manganese (Mn), and 0.1 to 1.0% of chromium (Cr). The spring also contains minimal amounts of phosphorus (P) and sulfur (S), with the balance being iron (Fe) and inevitable impurities. The unique structure of the spring includes at least 65% bainite and 4 to 13% residual austenite by area ratio in a cross-section. Additionally, it features a compressive residual stress layer extending from the surface to a depth of 0.35 mm to D/4, where D represents the circle-equivalent diameter of the cross-section. The spring is designed to have a high hardness layer that is 50 to 500 HV harder than the center portion, extending from the surface to a depth of 0.05 to 0.3 mm.

Career Highlights

Kosuke Shibairi is currently employed at Nhk Spring Co., Ltd., where he continues to innovate in the field of spring technology. His work has led to advancements that enhance the performance and durability of springs used in various applications.

Collaborations

Shibairi collaborates with talented coworkers, including Takeshi Suzuki and Yoshiki Ono, contributing to a dynamic and innovative work environment.

Conclusion

Kosuke Shibairi's contributions to spring manufacturing through his patent demonstrate his commitment to innovation and excellence in engineering. His work continues to influence the industry and inspire future advancements.