Ohno Continuous Casting


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The following link from an Audio Sensibility interview with Dagogo provides some little known information about Dr. Atsumi Ohno.

Research Publications

Dr. Ohno has authored numerous OCC research publications. Many of these publications were co-authored with colleagues and post-graduate students at both the Chiba Institute of Technology in Japan as well as the University of Toronto in Canada. The Chiba Institute and University of Toronto are the two leading OCC research universities in the world and are still in regular contact with Dr. Ohno who has officially retired.

The research paper Continuous Casting of Single Crystal Ingots by the O.C.C. Process published in the Journal of Metals in 1986 provides an excellent primer on the process.

OCC Research at University of Toronto

Dr. Ohno received his PHD in Metalurgical Engineering from the University of Toronto, Canada.

[thethe-image-slider name=”Toronto OCC Laboratory”] In 1989 he provided a very generous research endowment to the university which was used to start an OCC research lab.

[thethe-image-slider name=”Toronto OCC Samples”] Ohno Continuous Casting is used in a wide variety of industrial applications and can be used with a wide variety of metals including copper, silver, aluminum, tin, bismuth, and others. Some of these applications are on display at the research lab.

[thethe-image-slider name=”Toronto OCC Miscellaneous”] Some additional pictures and photographs from the research laboratory and School of Engineering are also included.


Dr. Ohno has authored a number of technical books. His definitive work is Solidification – The Separation Theory and its Practical Applications first published in Japanese in 1984 and translated to English in 1987. In this book, Dr. Ohno talks about the science of metal casting culminating in the OCC process which is described in the final section of the book.

Here is a brief excerpt of the publication which includes chapter 3.5 Separation Theory and the O.C.C. Process. It is worthwhile to read the entire excerpt, to gain some insight on Dr. Ohno’s articulate thought process and personality.

This book is one of my most treasured posessions (being a practicing professional engineer) and has been personally autographed by Dr. Ohno and includes his University of Toronto Department of Metallurgical Engineering business card.


Dr. Ohno has five patents related to the OCC process. The most often quoted patent is
4605056 issued in 1986, where he describes in detail the actual casting apparatus.

Continuous metal casting – Atsumi Ohno
Patent number: 4515204
Filing date: Dec 14, 1982
Issue date: May 7, 1985


Process and apparatus for the horizontal continuous casting of a metal molding – Atsumi Ohno
Patent number: 4605056
Filing date: Jun 13, 1984
Issue date: Aug 12, 1986


Method of producing a metallic member having a unidirectionally solidified – Atsumi Ohno
Patent number: 4665970
Filing date: Nov 20, 1985
Issue date: May 19, 1987


Process for continuous casting of metal ribbon – Atsumi Ohno
Patent number: 4789022
Filing date: Mar 18, 1988
Issue date: Dec 6, 1988


Method for horizontal continuous casting of metal strip and apparatus – Atsumi Ohno
Patent number: 5074353
Filing date: Nov 23, 1990
Issue date: Dec 24, 1991