Shigenobu Igawa

Title: Shigenobu Igawa: Innovator in Metal Tube Manufacturing

Introduction

Shigenobu Igawa is a notable inventor based in Aichi, Japan. He has made significant contributions to the field of manufacturing, particularly in the production of electroseamed metal tubes. With a total of 2 patents to his name, his work has had a lasting impact on the industry.

Latest Patents

Igawa's latest patents include a method for manufacturing an electric resistance welded metal pipe. This innovative method involves butting the side ends of a metal strip against each other and welding them using high-frequency heating. The process ensures that each side end has an inner surface side corner portion, which is crucial for the integrity of the welded pipe. The method also includes forming an inclined surface at the inner surface side corner portion before the butting process, ensuring that the inclined surface remains on the excess metal after welding, preventing any discharged metal from being welded to it.

Career Highlights

Throughout his career, Shigenobu Igawa has worked with prominent companies such as Nippon Steel Nisshin Co., Ltd. and Nippon Steel Nisshin Pipe Co., Ltd. His experience in these organizations has allowed him to refine his skills and contribute to advancements in metal manufacturing techniques.

Collaborations

Igawa has collaborated with notable coworkers, including Kouji Omosako and Makoto Akiduki. These partnerships have fostered innovation and have been instrumental in the development of his patented methods.

Conclusion

Shigenobu Igawa's contributions to the manufacturing of electroseamed metal tubes highlight his expertise and innovative spirit. His patents reflect a commitment to improving manufacturing processes, making him a significant figure in his field.