Electro-polishing method of Fe-based green compact for powder metallurgy product

摘要

The present invention relates to an electro-polishing method of Fe-based green compact using an electro-polishing device having an electrolytic bath in which an anode, a cathode, and an electrolyte are accommodated, which comprises the following steps of: a) enabling Fe-based green compact of the anode to be in contact with the electrolyte; and b) applying voltage or a current to the anode and the cathode to remove burr of the Fe-based green compact. The electrolyte comprises 4-11 wt% of an inorganic acid, 5-15 wt% of water, and the remainder consisting of an alcohol-based solution.