Corrosion Resistance Testing of the Galvanized Sheet Metal Braze Welding Joints

Abstract

The joining of the galvanized sheet is normally difficult to be done with classical methods, requiring special attention to the specific problems involved during the welding process. This paper presents the development of the joint technology by Cold Metal Transfer (CMT) of galvanized steel sheet using as filler material a CuSi wire electrode. The salt fog corrosion test was made to certify anticorrosive protection of the galvanized sheet metal joints. This test revealed a minimal deterioration of the galvanized zinc coating during welding and also confirms that using adequate technology galvanized steel can be weld without affected anticorrosive protection of the zinc layer.Experimental researches include optimization of the welding technology using CMT concept; technical skill development solutions of the joints; elaboration and implementation of laboratory advanced technology; experimentation and demonstration of technology functionality by obtaining of braze welded joints corrosion resistant.

Technology improvement for manufacturing and repair of collapsible pipelines

“…Дослідження корозійної стійкості з'єднань, виконаних методом дугового паяння, проведені авторами в роботі [5] показали що дугове паяння має незначний вплив на захисне покриття.…”