specially prepared metal rod to serve as filler material in the arc welding processes.
are manufactured in ferrous and nonferrous metals.
TYPES OF ELECTRODES
There are two types of electrodes: The metal-coated and uncoated.
coated electrodes: It has a metal core, a coating with chemicals and an uncoated end to secure the electrode holder.
The core is the metal electrode serves as filler. Its chemical composition varies according to the characteristics of the material to be welded.
The coating is a material is a material that is composed of various chemicals. Has the following functions:
a) directs the arc leading to a balanced and even fusion.
b) creates gases that act as protection preventing access of oxygen and nitrogen.
c) produces a slag which covers the filler metal, avoiding quenching and also the contact of oxygen and nitrogen.
d) contains certain elements obtain a good fusion with the various types of materials.
e) contributes to the molten pool chemicals that give the metal deposited to different characteristics for which was made
f) stabilizes the arc.
CONDITIONS OF USE
1) Must be free of moisture and its nucleus should be concentric
2) should be kept dry.
BARE ELECTRODE OR UNLINED
is a wire drawing or rolling, which can only be used in processes where there is an external protection to prevent the action of oxygen and nitrogen. These processes are called inert atmosphere. Using this industry as inert gases argon, helium, or mixture of argon and carbon dioxide. Interesting
course: SOURCE
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