Machine for the electro-marking of large metallic surfaces and relative process

摘要

A machine for the electrochemical marking treatment of metallic surfaces, includes an electrode placed in sliding movement on the metallic surface to be treated, a buffer impregnated with etching solution for the specific metal in treatment, and an electric current circuit, suitable for electro-marking treatment of said metal, with a conductor connected to the electrode and the other conductor connected to the metallic surface in treatment; and presents to treat large metallic surfaces on plates, metal canvas or on metallic sheet in coil. The plate, canvas or the metallic sheet is placed in a electro-marking mechanism in a reciprocally movable way with respect to the electrode, in such a way to allow the electrode the electrochemical marking action on the surface to be treated even if the electrode is of limited size with respect to said surface, the electrode being movable in the and/or with the electro-marking mechanism, the buffer being impregnated with the etching solution at regular intervals, and the relative motion of the electrode on the surface being the combination of two longitudinal and transverse relative motions.

主权项

1. A method of treatment by electrochemical marking of large metallic surfaces, comprising:
performing a treatment in which an electrode and a buffer impregnated with etching solution is endowed movement in a longitudinal direction with rolling, with respect to the metallic surface in treatment, wherein the electrode is endowed with transverse motion combined with the longitudinal movement of the metallic surface itself or of the electrode with the impregnated buffer and is carried to cover the entire surface in treatment by more sliding passages; wherein the transverse and longitudinal movement is obtained by the combination of two motions an advancement and return first motion indifferently belonging to the electrode or to the plate, canvas or metallic sheet in coil, and a second reciprocating motion transverse to the previous one belonging to the electrode; wherein the two combined motions make a passage of the electrode repeated more times on the same surface part in treatment; and wherein the shape or pattern of the electro-marking is made with a masking applied in a successively removable way to the plate, metal canvas or metallic sheet in coil.