Orientcarbongraphite

Th e  manual arc welding  system is defined as the process in which two metals are joined by a localized fusion, produced by an electric arc between a metal electrode and metal base that you want to join. Arc welding has been known since the end of the last century. At that time, graphite electrode manufacturer gave an uncovered metal rod was used as a filler metal. It was soon discovered that the oxygen and nitrogen in the atmosphere caused fragility and pores in the welded metal, so the metallic core was added with a coating that, when burned, was basified, acting as a protective atmosphere, at the same time contributing to significantly improve other aspects of the process. The electrode consists of a core or metal rod, surrounded by a coating layer, where the core is transferred to the base metal through an electrical zone generated by the welding current. The coating of the electrode, which determines the metallic and chemical characteristics of the joint, is made