Arc welding involves generating heat by striking an electric arc between an electrode and workpiece. The process requires a power supply, welding electrode, workpiece, and welding leads connecting the electrode and workpiece to the power supply. Shielded metal arc welding (SMAW), also known as stick welding, is the most widely used arc welding process and can weld most common metals. It involves striking an arc between the electrode and metal to heat it to the melting point, then removing the electrode to allow the molten metal to solidify.

1. Basic Principles of
Arc Welding

2. Principles of Arc
Welding
• Arc Welding is the process in which heat is generated by the electric
arc struck between an electrode and the work piece.
• Any arc welding method is based on an electric circuit consisting of the
following parts:
• Power supply (AC or DC);
• Welding electrode;
• Work piece;
• Welding leads (electric cables) connecting the electrode and work
piece to the power supply.

3. SMAW Principles
oThe American Welding Society defines SMAW as Shielded
Metal Arc Welding
oSMAW:
-is commonly known as stick welding or manual arc
welding.
-is the most widely used arc welding process in the world.
-can be used to weld most common metals and alloys.

4. Basics of Arc
Welding
• The arc is struck between the electrode and the metal.
• It then heats the metal to the melting point.
• The electrode is then removed, breaking the arc between the
electrode and the metal. This allows the molten metal freeze the
solidity.