PRODUCTION OF CORROSION RESISTANT COPPER WIRE

摘要

PURPOSE:To form a rust-proof film excellent in corrosion resistance on the surface of a copper wire by traveling the copper wire in a vessel and passing it in the rust-proof soln. of a benzotriazole-water-chlorine-base solvent heated at specified temp. and through the vapor atmosphere thereof. CONSTITUTION:An upper pulley 7 and a lower pulley 8 are fitted in multisteps in a vessel 6 and a copper wire 1 is inserted through an inlet part 9 and is allowed to travel many times around the multistepped pulleys 8, 9 of the upper and lower parts and drawn out through a discharge part 10. In this constitution, a three component-base rust-proof soln. consisting of benzotriazole-water- chlorine-base solvent is poured so that about 1/3 of the lower pulley 8 is immersed therein and the rust-proof liquid is heated at 50-70 deg.C and the copper wire 1 is traveled in the rust-proof soln. and through the vapor atmosphere of the soln. Thereby a rust-proof film of benzotriazole is formed on the surface of the copper wire 1 and the corrosion resistant copper wire 1 keeping copper color for a long period is obtained.