What characteristics of the weld bead does the weaving of the electrode have?

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 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 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.

Which of the following characteristics of an arc weld are considered welding defects?

What are the different types of welding defects? Weldings defects are classified into the following types: Incorrect profile, Crater, Cracks, Spatter and surface porosity, Incomplete filled groove, Distortion, Blowholes, and internal porosity, Cracks, Inclusions, Lack of fusion, Incomplete fusion.

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Why would a welder move or weave the electrode during a weld?

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. However, when you move across the center of the joint, you’ll want to hurry.

What affects weld bead?

The weld bead shape and penetration are affected by the orientation angle of the welding electrode to a greater extent when compared with the effect of the arc voltage or travel speed [16].

What is string or weave bead?

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 are the different motions of weaving?

Types of Primary Loom Motions in Weaving:

Shedding motion or shedding mechanism, Picking motion or picking mechanism, Beating motion or beating mechanism.

What are 5 characteristics of a good weld?

The basic conditions of welding quality to achieve products of such high quality includes the following:

  • No cracks or holes found in the bead.
  • The bead has uniform waves, width and height.
  • The finished product satisfies the design dimensions and has almost no distortion.
  • The welding meets the required strength.

What are the characteristics of weldability?

While weldability can be generally defined for various materials, some welding processes work better for a given material than others. Even within a certain process the quality of the weld may vary greatly depending on parameters, such as the electrode material, shielding gases, welding speed, and cooling rate.

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How is weld bead profile assessed?

Using these various measurement modes properly allows shape inspection of welds and weld joints of different workpieces.

  1. HEIGHT. …
  2. WIDTH AND POSITION. …
  3. ANGLE AND INTERSECTION. …
  4. MASTER PROFILE COMPARISON. …
  5. HEIGHT DIFFERENCE. …
  6. CROSS SECTIONAL AREA. …
  7. DISTANCE (POINT – POINT) …
  8. RADIUS AND MIDPOINT.

How travel angle affects the quality of weld bead?

As the angle between the electrode and the plate determines the point of impingement and direction of the arc force, it has a critical effect on the weld bead profile and depth of penetration.

Why do we need to follow the dimension of bead in doing or making groove and fillet weld?

Grove and fillet welds in heavy metals often require the deposit of a number of beads to complete a weld. It is important that the beads be deposited in a predetermined sequence to produce the soundest welds with the best proportions. The number of beads is determined by the thickness of the metal being welded.