Stringer beads are generally not very wide and can be used in any welding position. … It’s critical to get fusion between the weld and the base metal. Sometimes, moving the torch slow enough allows the weld puddle to flow over both sides of the joint. This may be all it takes to achieve good fusion.
What is a stringer bead used for in welding?
Stringer bead – A narrow, straight weld bead that is created by moving the SMAW electrode straight along the weld joint. A quality stringer bead should have good tie-in on both sides of the weld. … Fill – Also referred to as a fill pass, it is the amount of weld bead necessary to fill the weld joint.
What technique is used in performing Stringer beads?
Involves the electrode moving in a whipping motion across the path of the weld.
What is the meaning of 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.
What is bead welding?
A bead weld or weld bead is the result of a welding pass that deposits filler material. Welding is a process that combines multiple pieces of metal by heating and softening them. With bead welding, a filler material is inserted in the space between the two materials.
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 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.
Why uniformity of beads is important in welding?
The target size of the weld bead is determined according to the workpiece thickness, weld length, weld joint type etc. In addition, the uniformity of the bead size is also important from the standpoint of appearance as well as strength.
What are the different types of welding beads?
Types of Welding Bead
- TIG Welding Beads. TIG welding beads generally have a “stack of dimes” type of look. …
- Stick Welding Beads. Stick welds can have multiple bead characteristics. …
- MIG beads. Hardwire MIG is very versatile because there are so many techniques for creating a good weld. …
- Flux Cored MIG Beads.
What are welding positions?
What Is a Welding Position?
- Flat position. Also referred to as a “downhand” position, the flat position weld is the easiest and often the first weld that new students learn. …
- Horizontal Position. …
- Vertical Position. …
- Overhead. …
- Fillet Weld (F) …
- Grove Weld (G) …
- Butt Joints. …
- Lap Joints.
Why is it important to find a good welding position?
Why is it important to find a good welding position? A good position is important for both the comfort of the welder, and the quality of the weld. An awkward position can cause the welder fatigue, which leads to poor coordination and poor-quality welds.
What are the weaving motion in welding?
Weaving motion (uniform side-to-side motion) is applied to the electrode which gives better fusion of the weld metal. This weaving motion or process should be repeated on welding beads from left to right, right to left, and top to bottom, and bottom to top—to build up an uniform appearance of the weld metal.
What is the purpose of surfacing?
Surfacing refers to altering the surface characteristics of a material to achieve improved chemical or physical properties. This is done by welding or by spraying a filler metal coating onto a substrate. Surfacing imparts corrosion prevention properties to the substrate metal.