Location History:
- Fukuoka, JP (1980)
- Munakatamachi, JP (1981 - 1984)
- Munakata, JP (1983 - 1985)
Company Filing History:
Years Active: 1980-1985
Title: Jirou Harase: Innovator in Steel Production
Introduction
Jirou Harase is a notable inventor based in Munakatamachi, Japan. He has made significant contributions to the field of materials engineering, particularly in the production of advanced steel products. With a total of 5 patents to his name, Harase's work has had a profound impact on the industry.
Latest Patents
One of Harase's latest patents is a method for producing ferritic stainless steel sheets or strips. This invention addresses the issue of ridging that can occur during the forming process, such as deep drawing. The ridging is attributed to a band structure in the hot rolled band, which affects the formability of the cold rolled sheet. Harase's innovative approach combines three technical measures: incorporating aluminum into the ferritic stainless steel, heating the slab to a low temperature of 1200°C or less, and conducting a drastic hot rolling with a draft of 20% per pass or more. These measures enhance both the formability and anti-ridging properties of the steel.
Another significant patent by Harase is a process for producing aluminum-bearing grain-oriented silicon steel strips. This process involves several steps, including recrystallization hot rolling of a silicon steel slab, strain accumulation finish hot rolling, and multiple annealing stages. The method ensures that the steel maintains its quality and performance, particularly in applications requiring high efficiency.
Career Highlights
Jirou Harase is currently employed at Nippon Steel Corporation, where he continues to innovate and develop new materials. His expertise in steel production has positioned him as a key figure in the industry, contributing to advancements that benefit various sectors.
Collaborations
Throughout his career, Harase has collaborated with esteemed colleagues, including Yakichiro Kawamo and Tadashi Sawatani. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.
Conclusion
Jirou Harase's contributions to the field of steel production through his patents and collaborations highlight his role as a leading inventor. His work not only addresses current challenges in the industry but also paves the way for future advancements in materials engineering.