What is weld bead size?
Minimum Fillet Weld Size per AWS D1. 1 Table
| Base metal thickness (T) a | Minimum size of fillet weld b | |
|---|---|---|
| in | mm | in |
| T < 1/4 | T < 6 | 1/8 c |
| 1/4 < T < 1/2 | 6 < T < 12 | 3/16 |
| 1/2 < T < 3/4 | 12 < T < 20 | 1/4 |
How is a weld bead properly ended?
try to rotate the stinger and angle the rod in the opposite direction to fill in the crater at the end of the weld. as the base material heats up from the weld it is sometimes very hard to fill the crater at the end to get a good looking bead.
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.
What affects weld bead?
2.2. In the GMAW process, the arc plasma can affect the droplet formation and detachment and provide additional heat and pressure to the weld pool, which will affect the heat transfer and the final weld bead shape.
What is the difference between a weave bead and a stringer bead?
A weave bead fills the joint at the EXACT same rate as stringers. As travel speed slows down, the amount of heat going into the base metal goes up. In some metals this can cause problems that can not be found by inspection after welding.
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.
What is considered a good weld?
Welding is the only way of joining two or more pieces of metal together to make them act as a single piece. Since welding so prominently effects our daily lives welds are inspected either visually and/or physically. In all cases a strong and durable weld is considered a good weld.
What voltage is used for welding?
The primary functions of the power source are to produce sufficient heat to melt the joint and to generate a stable arc and metal transfer. As the welding processes require high current (50-300A) at relatively low voltage (10-50V),the high voltage mains supply (230 or 400V) must be reduced by a transformer.
Do sharks attack underwater welders?
Marine Wildlife – While not commonly attacked, underwater welders must be conscious of marine wildlife such as sharks and other potentially deadly creatures.
How much do oil rig divers get paid?
However divers working regularly on offshore wind projects can earn up to £100,000 a year. Offshore divers in Scotland can earn around £600 a day. On average, they work around 120-150 days a year. Experienced saturation divers working offshore can earn £1,500 a day or more.