casting design, solidification method and metallic mould design of lead anode for manufacturing copper foil

摘要

PURPOSE: A method and an apparatus for manufacturing a lead anode for electrolytic copper foil are provided in which oxides and bubbles generated during injection process are smoothly floated and separated, and solidification and cooling of casting are progressed from the lower part to the upper part so that cracking of the casting is prevented, and structure thereof is homogeneous. CONSTITUTION: The method for manufacturing a lead anode for electrolytic copper foil comprises a mold preheating step in which an external temperature of a mold(10) is maintained to 100 to 300 deg.C by an external heater(20) enabling multilevel heat control, the mold is preheated by an internal heater(30) so that an internal temperature of the mold becomes 200 to 300 deg.C, and an external temperature of the mold is maintained to 100 to 300 deg.C by the external heater after removing the internal heater to the outside of the mold when the mold is preheated; a molten metal injection step in which molten lead in a melting furnace(40) is injected into the lower part of the inside of the mold that is preheated in the mold preheating step through an injection guide tube(50); a molten metal pacifying step in which the molten metal is pacified for about 5 to 10 minutes as maintaining a temperature of the molten metal injected in the molten metal injection step to 200 to 400 deg.C by the external heater so that oxides, nonmetallic inclusions and bubbles mixed into the molten metal during the injection are floated; and a solidification control step in which heating conditions of the external heater is controlled at certain time intervals so that solidification of casting is progressed from the lower part to the upper part after the molten metal pacifying step.