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SMAW stands for shielded metal arc welding. The rectifier used in the welding machines must be referring to this type welding.

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Which welding process uses coated electrode?

The welding process that uses a coated electrode is Shielded Metal Arc Welding (SMAW), also known as stick welding. In this method, the electrode is coated with a flux that generates a shielding gas and a slag when heated, protecting the weld pool from atmospheric contamination. SMAW is widely used for its versatility and portability, making it suitable for various applications, including structural and repair work.


Is the ER70s-2 electrode the most common electrode used in sheld metal arc welding?

The ER70S-2 electrode is indeed one of the most commonly used electrodes in gas metal arc welding (GMAW) and is popular for its versatility and ability to weld a variety of steel types. It is particularly effective for welding carbon steels and is known for its good arc stability and weld quality. However, in shielded metal arc welding (SMAW), other electrodes like E7018 or E6013 are more commonly used, as they are specifically designed for that process. Thus, while ER70S-2 is prevalent in GMAW, it is not the most common electrode for SMAW.


What is difference between welding rod and electrode?

welding rod is used without applying current through it while the other one is, current is passing thru it..i.e. Welding rods are used in TIG welding process while Electrodes (E6011, E6013, E7017..etc..) is used in SMAW process


What are the effects of the electrode polarity on welding in the SAW process?

Think of Polarity as water flow in a pipe. Reverse Polarity means the flow is from the work to the machine. Straight Polarity is flow from the machine to the work. Heat is released when the flow tries to jump the gap. So in Reverse Polarity (where most SMAW is done) the heat builds up in the base metal which is usually thicker than the Electrode. The extra heat there helps melt the base metal. Straight polarity is usually employed when welding thin metals.