MANUFACTURE OF IRON POROUS BODY

• Main Authors: MASUDA TOSHIHIDE, MIKAMI NORIO, TAKEMURA YOZO, HORIGUCHI HIROSHI, MEGURO MASARU
• Format: Patent
• Language: English
• Published: 23.01.1990
• Subjects: ALLOYS; CASTING; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; METALLURGY; PERFORMING OPERATIONS; POWDER METALLURGY; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WORKING METALLIC POWDER

PURPOSE:To safely and economically manufacture self-reduction and sintering type iron porous body by kneading iron oxide powder and carbon powder with solution containing binder, coating it on a porous resin form, degreasing under non-oxidizing atmosphere and executing reduction-sintering. CONSTITUTION:The iron oxide powder of recovery iron powder, etc., is pulverized to make the fine powder. This iron oxide fine powder and the carbon powder to be necessary to reduce this are kneaded with water and the binder of CMC, etc. The above iron oxide and carbon are suitable to use both of fine powders having <=50mum particle size. Further, the adding rate of the binder is suitable to be 0.3-10wt.%. Further, in order to improve the soundness, strength, corrosion resistance, etc., of the structure by adjusting composition in the obtd. iron porous body, alloy element powders of Mn, Cr, Ni, etc., can be contained in the above iron oxide powder. After degreasing the coated material obtd. with this at about 300-350 deg.C under non-oxidizing atmosphere of nitrogen, etc., the iron oxide is self-reduced with the above carbon particle at 600-800 deg.C and successively, sintered at 900-1,200 deg.C, to obtain the iron porous body.