What is a stringer bead?
In welding, a type of bead which is made by moving the welding electrode in a direction parallel to the axis of the bead, without appreciable transverse oscillation.
When would a woven bead be used when welding?
Weave Bead Welding Techniques
This technique is used when you are layering welds among one another (making multiple welds on the same seam).
How does a welder run a stringer bead the welder moves the electrode in a?
A stringer bead is one made along a line without any side-to-side motion. … As the weld bead reaches the correct width, the welder moves the electrode forward at a constant speed. A weave bead is one made along a line while the electrode is moved from side to side.
What is a stringer bead used for?
Stringer beads, laid parallel to the joint, are used for welding stainless steel pipe since there is less tendency toward carbide precipitation. Stringer beads are recommended for welding all carbon and low alloy pipe in the vertical-fixed position.
Should you weave when MIG welding?
The general guidelines for MIG welding are whip when welding thin metal or making the first pass in a joint, circles for a both thicker materials and wider welds. Weave for vertical up and down.
Do I have to remove rust or oil before welding?
For a strong weld, you need to clean the metal beforehand so there are no contaminants. This is because it can interfere with the welding, create resistance and even create a weld splash. So if the metal you want to weld has rust, paint, and dirt or mill scale then you need to clean it.
What is the strongest weld pattern?
The absolute strongest weld that can be made in routine applications would be a type of weld made via the welding technique of Tungsten Inert Gas (TIG) Welding, also known as GTAW welding. TIG welders are known for creating clean and strong welds.
What four factors must an arc welder control in order to produce an acceptable bead?
The movement or weaving of the welding electrode can control the following characteristics of the weld bead: penetration, buildup, width, porosity, undercut, overlap, and slag inclusions.
What are four important points to check when running a bead?
(1) In order to weld, you must melt. (2) If the base metal is not melted, the filler metal just sticks on, and can easily be scraped off. (3) As the amperage is raised, the hotter arc not only melts more, but melts faster. (4) The cooler arc will produce some melting, if it’s kept in one place long enough.