| 摘要 |
PURPOSE:To obtain a magnetic fireproof composition used for magnetic conveyance by coating aggregate of one or more among magnesia, chrome, alumina, silica, silicon carbide and graphite with powder of one or more among Fe, Ni, Co and an alloy thereof. CONSTITUTION:90-70pst.wt. of aggregate of one or more among magnesia, chrome, alumina, silica, silicon carbide and graphite are coated with 10-30pst. Fe, Ni, Co or alloy thereof and granulated to obtain a magnetic fireproof composition. When an outer core obtd. by connecting coils in series is set on an inner core in the magnetic fireproof composition, AC is supplied and voltage is raised, the magnetic fireproof composition moves. |
