(often referred to as stud welding in a specific context or puddle arc welding ) is a manual or semi-automatic arc welding process used to weld a metal stud, rod, or reinforcing bar (rebar) onto a flat steel surface.
| Limitation | Description | |------------|-------------| | | Base metal should be at least 1/3 the diameter of the stud (typically ≥ 4.8 mm or 3/16 inch) to avoid burn-through. | | Material Type | Best on low-carbon steel. Difficult on galvanized, coated, or high-carbon steels without surface preparation. | | Equipment Cost | Stud welding guns and power supplies (especially drawn arc) are more expensive than standard stick welders. | | Inspection Difficulty | Weld quality cannot be visually assessed from the underside. Requires bend testing, ring testing, or ultrasonic inspection. | | Position Limitation | Typically performed in flat or horizontal positions. Overhead puddle welding is possible but difficult. | what is puddle welding
Puddle welding is a type of arc welding that involves creating a pool of molten metal, or a "puddle," to join two metal pieces together. The process uses a consumable electrode, typically made of a filler metal, to generate the arc. (often referred to as stud welding in a