To control the puddle, you must first understand what you are looking at. Through your welding helmet, a healthy puddle typically displays three distinct characteristics:
: A circular, fluid puddle usually indicates good heat and travel speed. If the puddle becomes elongated or "points" like a teardrop, you may be traveling too fast or running too hot.
The weld puddle is the molten area of the base metal that forms directly under or behind the heat source (the rod, wire, or torch). It is the liquid state of your final weld. If the puddle is the right size and shape, the resulting cooled bead will be strong and uniform. How to "Read" the Puddle puddle in welding
Here is solid, technical content on the subject (formally known as the weld pool ). This is structured for use in training materials, articles, or reference guides.
Run a bead at low amperage (puddle is sluggish, ropey). Then run the same joint at proper amperage (fluid, wetting). Teaches: recognizing correct puddle fluidity. To control the puddle, you must first understand
| Zone | What You See | Significance | | :--- | :--- | :--- | | | Bright, clean, fluid metal just behind the arc. | Indicates proper heat input. If "dull," you're too cold. | | Puddle Body | Molten metal with a reflective, mirror-like surface. | Should be consistent in shape. Ripples indicate travel speed. | | Solidification Line (Toes) | The edge where molten metal freezes to base metal. | Should be smooth (wetting). Jagged toes mean poor fusion. |
If the puddle is too big, too small, or moves erratically, the structural integrity of the weld fails. Proper control ensures: The weld puddle is the molten area of
Once the heat source moves away, this molten pool cools and solidifies to form the final weld bead.