Surface treatment apparatus

Abstract

Disclosed is a surface treatment apparatus including one of a positive electrode member and a negative electrode member to be electrically connected to a treatment-object article made of metal and having an annular treatment-object area in an outer circumferential face thereof, a frame member having a non-conductive inner circumferential face opposed with a gap to the outer circumferential face and to the annular treatment-object area, a non-conductive elastic seal member capable of forming an electrolysis solution path along the annular treatment-object area by sealing the gaps between portions of the outer circumferential face opposed to each other across the annular treatment-object area and the inner circumferential face, the other one of the positive electrode member and the negative electrode member having a bar-like shape with a leading end portion that protrudes into the electrolysis solution path toward the treatment-object article, and an electrolysis solution circulating means for circulating an amount of electrolysis solution along the electrolysis solution path.

1 . A surface treatment apparatus comprising:
 one of a positive electrode member and a negative electrode member to be electrically connected to a treatment-object article made of metal and having an annular treatment-object area in an outer circumferential face thereof;   a frame member having a non-conductive inner circumferential face opposed with a gap to the outer circumferential face and to the annular treatment-object area;   a non-conductive elastic seal member capable of forming an electrolysis solution path along the annular treatment-object area by sealing the gaps between portions of the outer circumferential face opposed to each other across the annular treatment-object area and the inner circumferential face;   the other one of the positive electrode member and the negative electrode member having a bar-like shape with a leading end portion that protrudes into the electrolysis solution path toward the treatment-object article; and   an electrolysis solution circulating means for circulating an amount of electrolysis solution along the electrolysis solution path.   
     
     
         2 . The surface treatment apparatus according to  claim 1 , wherein the apparatus comprises a plurality of the other one of the positive electrode members and the negative electrode members having the bar-like shape disposed in distribution along the circumferential direction of the electrolysis solution path. 
     
     
         3 . The surface treatment apparatus according to  claim 1 , wherein the other one of the positive electrode member and the negative electrode member having the bar-like shape is disposed to protrude, with its longitudinal direction being the direction perpendicular to the outer circumferential face. 
     
     
         4 . The surface treatment apparatus according to  claim 1 , wherein the other one of the positive electrode member and the negative electrode member having the bar-like shape has an outer circumferential face which is formed as a concave/convex face. 
     
     
         5 . The surface treatment apparatus according to  claim 1 , wherein the other one of the positive electrode member and the negative electrode member having the bar-like shape has a leading end portion whose shape is a convex face. 
     
     
         6 . The surface treatment apparatus according to  claim 2 , wherein the other one of the positive electrode member and the negative electrode member having the bar-like shape is disposed to protrude, with its longitudinal direction being the direction perpendicular to the outer circumferential face. 
     
     
         7 . The surface treatment apparatus according to  claim 2 , wherein the other one of the positive electrode member and the negative electrode member having the bar-like shape has an outer circumferential face which is formed as a concave/convex face. 
     
     
         8 . The surface treatment apparatus according to  claim 3 , wherein the other one of the positive electrode member and the negative electrode member having the bar-like shape has an outer circumferential face which is formed as a concave/convex face. 
     
     
         9 . The surface treatment apparatus according to  claim 2 , wherein the other one of the positive electrode member and the negative electrode member having the bar-like shape has a leading end portion whose shape is a convex face. 
     
     
         10 . The surface treatment apparatus according to  claim 3 , wherein the other one of the positive electrode member and the negative electrode member having the bar-like shape has a leading end portion whose shape is a convex face. 
     
     
         11 . The surface treatment apparatus according to  claim 4 , wherein the other one of the positive electrode member and the negative electrode member having the bar-like shape has a leading end portion whose shape is a convex face.