| 摘要 |
PROBLEM TO BE SOLVED: To provide reduced iron powder high in apparent density for eliminating the treatment unevenness of surface finishing while having suitable polishing force as iron powder for surface finishing, and a method for producing the same.SOLUTION: Provided is reduced iron powder for surface finishing to a metallic product whose apparent density is 3,000 to 4,000 kg/m. Also provided is a method for producing reduced iron powder for surface finishing to a metallic product containing: a step where iron oxide powder is subjected to reduction treatment to obtain a spongy iron cake; a step where the spongy iron cake is subjected to cracking treatment and is thereafter subjected pulverization treatment to obtain the pulverized product of the spongy iron cake; a step where the pulverized product of the spongy iron cake is repeatedly pulverized till whose apparent density reaches 3,000 to 4,000 kg/mto obtain an apparent density-regulated product of the spongy iron cake; and a step where the apparent density-regulated product of the spongy iron powder is subjected to classification treatment.SELECTED DRAWING: None |
