Why the weaving motion is important in welding?

What is weave bead in welding?

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 weave bead motion technique used in stick 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 motion is used for stick welding?

Angle of travel: Stick welding in the flat, horizontal and overhead positions uses a drag or backhand welding technique. Hold the electrode perpendicular to the joint, and then tilt the top in the direction of travel approximately 5 to 15 degrees.

What are the three 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.

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What is a keyhole in welding?

A technique in which a concentrated heat source penetrates partially or completely through a workpiece, forming a hole (keyhole) at the leading edge of the weld pool. As the heat source progresses, the molten metal fills in behind the hole to form the weld bead.

What is whipping in welding?

Whipping is a manipulative technique used by the experienced welder to help control the rate at which heat and filler metal are added to the weld puddle and provides the means by which he can control puddle size.

Which is better AC or DC welder?

DC stick welding offers advantages over AC when welding steel, including smoother and more stable arcs, easier starts, fewer arc outages, less spatter and easier vertical up and overhead welding. DC positive polarity provides a high level of penetration into the steel.

What is the correct motion for cutting?

The knife should perform a rocking motion during cutting: the front top portion of the blade should stay on the cutting board during all times when cutting (or at least the majority of the cutting time), and the rest of the blade should go up and down.

What are the 5 essentials of welding?

WELDING PROCEDURES

  • 5 essentials for proper welding procedures.
  • 1) CORRECT ELECTRODE SIZE.
  • 2) CORRECT CURRENT.
  • 3) CORRECT ARC LENGTH or VOLTAGE.
  • 4) CORRECT TRAVEL SPEED.
  • 5) CORRECT ELECTRODE ANGLE.
  • 8 FACTORS to consider in selecting arc welding electrodes.