Company Filing History:
Years Active: 2005
Title: Hiroshi Ohba: Innovator in Continuous Casting Technology
Introduction
Hiroshi Ohba is a notable inventor based in Kimitsu, Japan. He has made significant contributions to the field of metallurgy, particularly in the area of continuous casting. His innovative work has led to advancements that improve the quality of steel production.
Latest Patents
Hiroshi Ohba holds a patent for a "Billet by continuous casting and manufacturing method for the same." This patent addresses the production of billets with minimal central segregation, specifically focusing on high carbon steel. The method involves reducing the size of the dendritic equiaxed crystal in the central portion of the billet to no more than 6 mm. To achieve this, electromagnetic stirring is utilized to increase the inclining angle of the primary dendrite within 10 mm of the billet surface layer to at least 10 degrees. Additionally, mechanical soft reduction is performed during continuous casting to minimize the diameter of center porosity in the billet's central portion to no more than 4 mm. This innovation is particularly beneficial for manufacturing billets with a carbon content of at least 0.6% by mass and a size not exceeding 160 mm, as it reduces breaking troubles in wire drawing after rolling to a rod.
Career Highlights
Hiroshi Ohba is associated with Nippon Steel Corporation, where he has applied his expertise in metallurgy to enhance production processes. His work has been instrumental in developing methods that ensure the quality and reliability of steel products.
Collaborations
Hiroshi has collaborated with notable colleagues such as Shigenori Tanaka and Toyoichiro Higashi. Their combined efforts have contributed to advancements in continuous casting technology.
Conclusion
Hiroshi Ohba's innovative contributions to continuous casting technology have significantly impacted the steel industry. His patent for improving billet quality demonstrates his commitment to advancing metallurgical processes.