FILLER PASS WELDING Weave beads, produced by weaving the torch across the joint, can be used on carbon and low-alloy steel in the rolled or horizontal-fixed position. Stringer beads, laid parallel to the joint, are used for welding stainless steel pipe since there is less tendency toward carbide precipitation.
What is Stringer beads?
A stringer bead is a straightforward procedure in which you either pull (i.e., “drag”) or push the torch across the joint in a straight line with no or minimal side-to-side movement. Dragging means the electrode is angled in the “forward” welding direction, leading the puddle.
What is a weave bead in welding?
“Weave bead. A type of weld bead made with transverse oscillation. See Figure (22B)”… which shows a butt joint where the bead is made with a side to side motion as forward progress along the joint was made.
Should you weave when MIG welding?
When you weld each pass, treat it like a horizontal weld by weaving or swirling circles through the joint. If you’re running two passes, keep the bead narrower for the first pass.
What are beads?
A bead is a small, decorative object that is formed in a variety of shapes and sizes of a material such as stone, bone, shell, glass, plastic, wood or pearl and with a small hole for threading or stringing. … Beadwork is the art or craft of making things with beads.
Do overlaps and undercuts strengthen a weld?
Undercutting is the result of welding with excessive current, traveling too fast, or using an improper work angle. … Overlap occurs when the weld pool runs down to the lower side of the bead and solidifies on the surface without actually penetrating the base metal. True. Overlaps and undercuts strengthen a weld.
Why electrode is coated with flux?
The electrode is coated in a metal mixture called flux, which gives off gases as it decomposes to prevent weld contamination, introduces deoxidizers to purify the weld, causes weld-protecting slag to form, improves the arc stability, and provides alloying elements to improve the weld quality.
Can you weave flux core?
When it comes to flux core, there’s a correct technique to use when weaving is allowed, and there’s an incorrect way also. In other words, always weave ahead of the solidified slag and never over it, otherwise you will end up with slag inclusions, and this should only be used in out of position deposits.
Why is it important to have overlapping Stringer beads in fillet welds?
Overlapping beads are used to build up a surface and to make multi-pass welds.
What are the different types of welding beads?
Welding Beads – Types Of Beads
- TIG Welding Beads.
- Stick Welding Beads.
- MIG beads.
- Flux Cored MIG Beads. Conclusion.
Should you push or pull when MIG welding?
When MIG welding mild steel, you can use either the push or pull technique, but note that pushing usually offers a better view and enables you to better direct wire into the joint.
Is it better to weld up or down?
It’s always better to run the weld “up” because if everything is right, you’re assured better penetration regardless of the process being used. When running SMAW or FCAW, the welds should always be run “up” to eliminate the possibility of slag inclusions.
Is Tig stronger than MIG?
Bottom Line. TIG welding produces cleaner and more precise welds than MIG welding or other Arc welding methods, making it the strongest. That said, different welding jobs may require different methods, while TIG is generally stronger and higher in quality, you should use MIG or another method if the job calls for it.