Nippon Steel Corporation

Nippon Steel Sumitomo Metal Corporation

Tsuyoshi Hamaya

Satoshi Arai

Koji Yamasaki

Shinya Sano

Osamu Tanaka

Masaaki Kondo

Tomoji Kumano

Toshimitsu Takahashi

Hotaka Honma

Yoji Sato

Maremizu Ishibashi

Akira Sakaida

Tsutomu Haratani

Yasuo Ohsugi

Eiji Yanagida

Makoto Atake

Chihiro Sakurai

Hiroaki Mochinaga

Shigenobu Koga

Takaharu Kataoka

A method of annealing a metal member includes: disposing a first heater in an inner space of a hollow cylindrical metal member having an inner peripheral surface provided with plural teeth protruding toward a central direction, the first heater radiating infrared light and being disposed so as to extend parallel to a direction of a central axis of the metal member; heating the metal member from the inner space with the first heater; and gradually cooling the metal member after heating.

Method of annealing metal member

Disclosed is an annealing separator for production for grain-oriented electrical steel sheet, containing one or more compound selected from the following general formula;

Annealing separator having excellent reactivity for grain-oriented

Growing community of inventors

Tokyo, Japan

Tsuyoshi Hamaya