Title:
ELECTROLYTIC COLORING METHOD FOR ALUMINUM
Document Type and Number:
Japanese Patent JPS5819493
Kind Code:
A
Abstract:
PURPOSE:To anodize and electrolytically color an Al strip with low electric power consumption by using an aq. sulfuric acid soln. in an electric power supply tank, an aq. phosphoric acid soln. in an anodizing tank and an aq. metallic salt soln. in an electrolytic coloring tank respectively and passing the continuous Al strip therethrough. CONSTITUTION:An Al strip 2 let off from an uncoiler 1 is run by means of driving rollers 16 and supporting rollers 17. The strip passes through a degreasing tank 3 and a rinsing tank 4 then through an electric power supply tank 5 which contains 5-60wt% aq. sulfuric acid soln. and is installed with an electrode 13 facing the Al strip in the liquid and connecting to the anode of a DC power source 18 and an AC power source 19. The strip passes through a rinsing tank 6 and enters an anodizing tank 7 which contains about 3-35% aq. phosphoric acid soln., and is installed with an electrode 14 connecting to the cathode of the DC power source 18 in the soln., where the strip is subjected to anodizing. The anodized strip passes through a rinsing tank 8 and enters an electrolytic coloring tank 9 which contains an aq. metallic salt soln. and is installed with an electrode 15 connecting to the AC power source 19 where the strip is subjected to electrolytic coloring passes through a rinsing tank 10, and a sealing tank 11 and is taken up on a recoiler 12.
Inventors:
YOKOYAMA FUMIAKI
NAGANO SHIYOUZOU
ODA TAKEHIKO
TAKADA TERUO
NAGANO SHIYOUZOU
ODA TAKEHIKO
TAKADA TERUO
Application Number:
JP11747181A
Publication Date:
February 04, 1983
Filing Date:
July 27, 1981
Export Citation:
Assignee:
MITSUBISHI KEIKINZOKU KOGYO
International Classes:
C25D11/22; C25D11/04; (IPC1-7): C25D11/22
Domestic Patent References:
| JPS5334107A | 1978-03-30 | |||
| JPS5423657A | 1979-02-22 |
Attorney, Agent or Firm:
Hasegawa Hajime