Location History:
- Chiba, JP (2016)
- Tokyo, JP (2017)
Company Filing History:
Years Active: 2016-2017
Title: **Shigeyuki Aizawa: Innovator in Cold-Rolled Steel Technology**
Introduction
Shigeyuki Aizawa is a distinguished inventor based in Tokyo, Japan, recognized for his contributions to the field of metallurgy, particularly in the development of cold-rolled steel products. Holding two patents, Aizawa's work has significantly advanced manufacturing techniques in the steel industry.
Latest Patents
Aizawa's most recent patents exemplify his innovative approach to steel manufacturing. The first patent details a **High-strength cold-rolled steel sheet and method for manufacturing the same**. This invention introduces a steel sheet characterized by a microstructure comprising 40% to 60% ferrite phase, 10% to 30% bainite phase, 20% to 40% tempered martensite phase, and 5% to 20% retained austenite phase by volume fraction. Notably, it specifies that the ratio of the tempered martensite phase, having a major axis length of less than or equal to 5 µm, must account for 80% to 100% of the total volume fraction of the tempered martensite phase.
His second patent, entitled **Method and apparatus for manufacturing Si-containing cold rolled steel sheets**, offers innovative strategies for producing Si-containing cold-rolled steel sheets that exhibit outstanding chemical conversion properties. This method allows for a chemical conversion treatment at lower temperatures while minimizing sludge generation and reducing overall running costs. The patented process includes steps such as cold rolling a steel containing 0.5 to 3.0 mass % silicon, followed by continuous annealing, pickling, and repickling treatments to ensure high product quality.
Career Highlights
Aizawa is currently employed by JFE Steel Corporation, a leading player in the steel industry known for its commitment to technological advancement. His role in the company enables him to engage deeply with cutting-edge manufacturing practices and contribute to the development of high-performance steel products.
Collaborations
Throughout his career, Shigeyuki Aizawa has collaborated with esteemed colleagues, including Hidetaka Kawabe and Takeshi Yokota. These partnerships have fostered an environment of innovation, allowing them to collectively tackle challenges in steel manufacturing and bring forth novel solutions.
Conclusion
Shigeyuki Aizawa's influential work in the field of cold-rolled steel manufacturing is a testament to his dedication and ingenuity as an inventor. His patents not only advance technical efficiency but also reflect his commitment to improving product performance in the steel industry. As he continues to innovate, Aizawa remains a key figure to watch in metallurgy and engineering innovations.