What is weave bead?

What is the meaning of weave bead?

“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.

What is weave bead in welding?

Weave bead welding involves making a weaving pattern in order to cover a larger surface area. This motion allows you to make cover welds over stringer beads, otherwise known as multipass welding. This technique is used when you are layering welds among one another (making multiple welds on the same seam).

What are the uses of weave beads?

Besides filling a wider bead, weaving is used to control the heat in your weld puddle. In addition, you can pause on each side of the weld to achieve a good tie-in to the metal pieces and prevent undercutting of the edges.

What is the difference between a stringer bead and a weave bead?

Stringer beads are recommended for welding all carbon and low alloy pipe in the vertical-fixed position. The advantage of using weave beads, in the rolled or horizontal-fixed position, is that it requires less time to complete the welds.

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What is a stringer bead?

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.

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.

What are the 5 weaving motion in welding?

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. In all cases the motion must be uniform, otherwise it would give poor fusion at the edges of the deposited metal.

Where does a weaver work?

Medium or small textile manufacturing businesses typically employ Weavers. The job is based in the production area of a factory or workshop. The textile-manufacturing environment is typically well light and well ventilated, but can get very noisy. The work can be physically demanding and ear protection is required.

What is a good weld bead?

A good weld is easy to distinguish. It will be straight and uniform with no slag, cracking, or holes. There will be no breaks in the weld. It shouldn’t be too thin and there should be no dips or craters in the bead.

What is the most difficult weld to make?

TIG welding is the hardest form of welding to learn for a variety of reasons. The process of TIG welding is slow and takes time to get used to as a beginner. A TIG welder requires a foot pedal to feed the electrode and control the variable amperage while maintaining a steady hand at the welding torch.

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What metals give off toxic fumes when welding?

Welding fumes contain a variety of metals, including aluminum, arsenic, beryllium, lead and manganese. Argon, nitrogen, carbon dioxide, carbon monoxide and hydrogen fluoride gases often are produced during welding. Welding fumes can cause serious health problems for workers if inhaled, according to OSHA.

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.