Norio Ohatake

Title: Norio Ohatake: Continuous-Casting Innovations

Introduction

Norio Ohatake is an inventor associated with Toyama, Japan. His work includes innovations in continuous-casting technology, with a focus on cooling molten metal and improving the formation of solidified ingots. He is credited with 6 patents.

Latest Patents

Ohatake’s listed patents include “Cooling Method of Continuous Casting” and “Apparatus for Continuous Casting.” Both describe a mold with primary and secondary water-cooling jets positioned and angled to control cooling along the ingot surface.

In the cooling method, the primary jet helps establish transition-boiling and film-boiling zones near the molten metal’s meniscus. The secondary jet targets the initial portions of those zones, disrupting the vapor film and promoting nucleate boiling. The patent describes this approach as a way to form a firmer solidified shell, reduce breakout risk, and support stable, high-rate casting of quality ingots.

The apparatus patent incorporates a similar two-jet cooling arrangement. It also describes a downstream wiper that removes cooling water from the ingot surface, followed by a third cooling-water jet. Together, these features are intended to manage cooling during continuous casting.

Career Highlights

The available information associates Ohatake with Yoshida Kogyo K.K. His listed patent work addresses practical challenges in continuous casting, particularly the control of cooling and solidification.

Collaborations

Makoto Arase and Yoshitaka Nagai are identified as Ohatake’s coworkers. The supplied information does not specify their roles in the listed patents.

Conclusion

Norio Ohatake’s documented inventions focus on continuous-casting methods and equipment designed to improve ingot cooling, strengthen solidification, and support reliable production.