Sei Hiraki

Title: Innovations of Sei Hiraki in Continuous Casting Technology

Introduction

Sei Hiraki is a notable inventor based in Kashima, Japan, recognized for his contributions to the field of continuous casting technology. With a total of 9 patents to his name, Hiraki has made significant advancements that enhance the efficiency and quality of steel production.

Latest Patents

Hiraki's latest patents include a method for continuous casting of steel and an electromagnetic stirrer designed for this process. The electromagnetic stirrer is engineered to stir molten steel in a width-wise direction of the slab. It features an iron core aligned with the slab's width and multiple exciting coils that allow for the passage of two-phase or three-phase alternating current. This innovative design creates a stirring flow that directs the molten steel from the minor sides to the center of the slab, or from one minor side to the other, with a reversing flow at predetermined intervals.

The continuous casting method disclosed by Hiraki involves the installation of an electromagnetic stirrer upstream of the reduction rolling position of a slab. This method enables the production of slabs with stabilized center segregation qualities over extended casting operations. By utilizing a collision flow forming-type stirring and a uni-directional alternating flow forming-type stirring, the method effectively stirs and diffuses molten steel, ensuring excellent quality in high-strength steel casting.

Career Highlights

Throughout his career, Sei Hiraki has worked with prominent companies such as Sumitomo Metal Industries, Inc. and Toshiba Ceramics Co., Ltd. His experience in these organizations has contributed to his expertise in the field of metallurgy and casting technologies.

Collaborations

Hiraki has collaborated with notable colleagues, including Akihiro Yamanaka and Toshihiko Murakami, further enhancing his innovative work in continuous casting.

Conclusion

Sei Hiraki's contributions to continuous casting technology have significantly impacted the steel industry, showcasing his innovative spirit and dedication to improving manufacturing processes. His patents reflect a deep understanding of the complexities involved in steel production, making him a key figure in this field.