Kozo Teraoka

Title: Kozo Teraoka: Innovator in TIG Welding Technology

Introduction

Kozo Teraoka is a distinguished inventor based in Tokyo, Japan. He is known for his significant contributions to the field of welding technology, particularly in the development of methods that enhance the efficiency and effectiveness of welding processes.

Latest Patents

Teraoka holds a patent for a method of TIG welding 1.25 Cr-0.5Mo steel pipe. This invention addresses the challenges associated with welding a Cr-Mo steel pipe with a wall thickness of 13 mm or less. The composition of the steel includes C: 0.03-0.10 wt %, Si: 0.50-1.00 wt %, Mn: 0.30-0.60 wt %, P ≤ 0.007 wt %, S ≤ 0.020 wt %, Cr: 1.00-1.50 wt %, Mo: 0.45-0.65 wt %, Al: 0.002-0.010 wt %, and N: 0.002-0.010 wt %, with the remainder consisting of Fe and unavoidable impurities. Notably, this invention allows for the omission of preheating and postheating treatments, effectively preventing weld cracking and stress corrosion cracking. The steel pipe is particularly suitable for steam piping applications, such as STPA23 used in power generation plants.

Career Highlights

Teraoka is associated with NKK Corporation, where he has made significant strides in welding technology. His work has been instrumental in advancing the capabilities of welding processes, particularly in industrial applications.

Collaborations

Throughout his career, Teraoka has collaborated with notable colleagues, including Toshihiro Takamura and Yukio Nishino. These collaborations have contributed to the development of innovative solutions in the welding industry.

Conclusion

Kozo Teraoka's contributions to TIG welding technology exemplify the impact of innovation in industrial applications. His patented methods not only enhance welding efficiency but also ensure the integrity of critical components in power generation.