Question

Melting rates of electrodes in manual metal arc welding process is mainly governed by the

• A. Length of the electrode
• B. Type of coating
• C. Welding current
• D. Arc voltage

Hint:

In arc welding, electrode coating type plays a crucial role in determining the melting rate and overall weld quality.

Answer 1

The Correct Option is B

In manual metal arc welding (MMAW), the type of coating on the electrode significantly affects the melting rate. This is because the coating influences: - The arc stability, - Heat generation near the electrode tip, - Slag formation and, - The metal transfer characteristics. While welding current and arc voltage influence the energy input, it is the electrode coating that controls how this energy is utilized to melt the electrode.