Kawasaki Steel Corporation

Shigenobu Takata

Yoshisato Kiyota

Masato Kumagai

Rikio Ono

Keiji Matsuda

Noboru Komatsubara

Masakazu Iida

Toyohide Yamaguchi

Masao Nanbu

A graphite-containing monolithic refractory material comprises at least one component selected from alumina and alumina-magnesia spinel, which are divided into selected particle size regions, artificial graphite having a selected average particle size, and pitch powder. The refractory material may optionally comprise a selected amount of silicon carbide having a selected average particle size. The graphite-containing monolithic refractory material exhibits excellent casting workability at a low moisture content, and both excellent corrosion resistance and spalling resistance. The refractory material is suitable as a casting monolithic refractory material for lining a topedo ladle car.

Graphite-containing monolithic refractory material

A lock nut for engagement with a thread of a bolt, in which a thread block is arranged in the body thereof for engaging with the thread of the bolt and is made eccentric with respect to the axis of the nut body so that an initial tightening force of the nut on the bolt can be held for a long time.

Lock nut

Growing community of inventors

Kurashiki, Japan

Shigenobu Takata