Kohki Ohtsuka

Title: Innovator of Nodular Graphite Cast Iron: Kohki Ohtsuka

Introduction

Kohki Ohtsuka, an accomplished inventor based in Fukuoka, Japan, has made significant contributions to the field of materials engineering. With a focus on improving the production methods of cast iron, Ohtsuka holds a patent that enhances the strength, toughness, and cost-effectiveness of nodular graphite cast iron.

Latest Patents

Ohtsuka's notable patent is a method of producing nodular graphite cast iron, which enables the material to achieve high strength and toughness in a shorter period while reducing production costs. The patented method involves several critical steps: rapidly cooling the casting removed from the mold at a predetermined temperature above the A1 transformation point, controlling the cooling rate to prevent the formation of pearlite structure, and maintaining a temperature above the Ms point during the cooling process. This innovative approach allows for excellent material properties and efficient production timelines.

Career Highlights

Currently employed by Hitachi Metals Ltd., Ohtsuka has established himself as a key player in the development of advanced materials. His work in the production of nodular graphite cast iron not only contributes to the field but also positions his company as a leader in innovation within the metalworking industry.

Collaborations

Ohtsuka collaborates closely with fellow innovators Makoto Suenaga and Mitsuru Yano, demonstrating the importance of teamwork in research and development. Their collective expertise fosters a creative environment that leads to groundbreaking advancements in material engineering.

Conclusion

Kohki Ohtsuka continues to impact the field of engineering and materials science with his innovative approaches to production techniques. His patented method for producing nodular graphite cast iron highlights his commitment to enhancing material properties and reducing costs, ensuring that his work remains at the forefront of technological advancements.