JPS60162799A - Anode for treating inside of pipe of small diameter - Google Patents

Abstract

PURPOSE:To plate or pretreat well the inside of a pipe of a small diameter by spirally winding an insulator around an electrode rod so that the rod does not contact with the inner wall of the pipe when the rod is put in the pipe. CONSTITUTION:The inside of a pipe 3 of a small diameter is plated or pretreated. At this time, an insulator 2 is spirally wound around an electrode rod 1 so that the rod 1 does not contact with the inner wall of the pipe 3 when the rod 1 is put in the pipe 3. A plating soln. is easily circulated, and a large surface area of the rod 1 is exposed, so the inside of the pipe 3 can be well plated or pretreated.

Description

[Detailed Description of the Invention] Regarding internal plating, the present invention involves spirally wrapping an insulator around the electrode rod to expose as much of the surface of the electrode rod as possible and impart rotation to the electrode rod when inserted into a small diameter tube. The spiral of the insulator allows the processing liquid to easily pass through the small-diameter tube.The pole rod is wrapped with an insulator at a pitch that prevents the pole rod from coming into contact with the inner wall of the tube.The pole rod may be melted or unmelted, depending on the type of plating. Select the material with the best possible conductivity. Select the pitch and wrap depending on whether the pipe is straight or curved.

The material of the pole rod is determined by the type of plating solution and the shape of the pipe, for example, if it is a straight pipe, it should be a straight material, if it is a curved pipe, it should be a special steel material that is flexible and has good conductivity. Engraving (no change in content) ♂ Figure 11 Continuation of the Continuing Amendment Written by the Commissioner of the Japan Patent Office on May q, 1982 Indication of the case Patent Application No. 0176762 of 1982
Title of the invention Anode 3 for surface treatment inside small-diameter pipes Person making the amendment Relationship to the case Patent applicant address 30-4 Chikutoyahata-cho, Shinjuku-ku, Tokyo Date of amendment order April 4, 1980 5 Line of amendment Details The name in the book and drawings was corrected to figure 2, and the cross-sectional view of the tip was added. Figure A in the drawings was corrected to figure 1, and figures B to figure 2.

Claims (1)

[Claims] During internal plating and pretreatment of small-diameter tubes, electrical insulation is created between the electrode rod (anode) inserted into the tube and the inner wall of the tube by wrapping an insulator in a spiral shape around the electrode rod. The electrode rod insulation structure is characterized by the fact that the electrode does not come into contact with the inner surface of the tube when inserted, the plating solution is easily circulated, and the surface area of the electrode rod is exposed as much as possible.