Chapter 12
Restricts flow within the pipe
Excessive root reinforcement should be avoided while welding pipe because
Increase the deposition rate
Feathering the ends of tack welds with a grinder helps to
Weave beads for stainless pipe
For the flux cored arc welding in the 1G rotated position, avoid using
Wear leather seats over your shoes
If the tongue and lace area of your footwear is exposed, you should
True
If you will be welding on zinc or cadmium material for only a few minutes , you may use a metal fume filter T/F ?
Entirely from the flux in the wire core
In FCAW -S , thenshielding gas is generated ___
Voltage that is too high
In the FCAW arc length is too long and causes the wire to melt and fuse to the contact tube
45 degrees to horizontal plane
Multiple inclined (6G) position open root V- groove pipe welds are made with the pipe axis inclined____
Fill the crater
Pay particular attention at the termination of the weld
1/8"
Pipe groove welds should be made with slight reinforcement not to exceed
Low carbon steels
The FCAW process is limited to welding
Methane
The gas that tends to concentrate in and along low areas
0 to 1/8" wide
The welding codes allow the root fave on FCAW open root welds on carbon steel pipe
Dropped slightly, but not more than 10 degrees
To prevent the weld puddle from sagging, the gun work angle can be
Primary disconnect
When preparing the welding machine, verify the location of the