Nippon Steel Sumitomo Metal Corporation

Sumitomo Metal Industries, Inc.

Yoshimi Imoto

Tetsuya Nakanishi

Hirofumi Hori

Teruo Onozawa

A method of coating uses an anti-seizure agent for hot steel working that exhibits excellent wettability and surface film-adherability. The agent comprises: an inorganic component (first component); sodium hydroxide (second component); water-soluble resins and/or water-soluble surfactants (third component); and water. With the sum of the first component, the second component, and the third component as 100 mass %, the anti-seizure agent contains: 96.5 mass % or more and 99.98 mass % or less of the first component; 0.01 mass % or more and 2.0 mass % or less of the second component; and 0.01 mass % or more and 1.5 mass % or less of the third component, and the inorganic component is one or more selected from a group consisting of AlO, SiO, CaO, BO, KO, and NaO. A coating layer formed solidly adheres to the steel and does not come off in both cold and hot working.

Anti-seizure agent for hot steel working

An anti-seizure agent for hot steel working that exhibits excellent wettability and surface film-adherability comprises: an inorganic component (first component); sodium hydroxide (second component); water-soluble resins and/or water-soluble surfactants (third component); and water. With the mass of the sum of the first component, the second component, and the third component as 100 mass %, the anti-seizure agent contains: 96.5 mass % or more and 99.98 mass % or less of the first component; 0.01 mass % or more and 2.0 mass % or less of the second component; and 0.01 mass % or more and 1.5 mass % or less of the third component, and the inorganic component is one or more selected from a group consisting of AlO, SiO, CaO, BO, KO, and NaO. A coating layer formed after application solidly adheres to the steel and does not come off in the environment of both cold and hot working.

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Tokyo, Japan

Yoshimi Imoto