Oxyfuel
SMAW
Gmaw/Fcaw
Plasma/Cac
Blue prints
100
Name the 3 types of flames
Oxidizing, Neutral, and Carbonizing
100
_________________ the percentage of time a welding machine can be used continuously
Duty cycle
100
generally used on thin materials and at very low current range, the arc melts the end of the electrode forming a ball
Globular transfer
100
Dross refers to what in the PAC process
Slag
100
What is the blue print telling you to do
fillet weld both sides
200
This chemical reaction, known as _______________,
Is rapid oxidation
Combustion
200
_____ _____ _____ May cause the metal transferring across the gap to short out the electrode
Short Arc Lengths
200
CV refers to what in GMAW/FCAW
Constant voltage
200
Electrodes for CAC-A come in what shapes
round, flat, semi round
200
1/4 fillet weld - staggered 2 inches long with 5 inch spacing
300
To make acetylene you mix what two substances
Calcium carbide and water
300
_______________ is the measurement of the total number of electrons flowing
Amperage
300
self contained system consisting of a small drive system and wire suppl, only use the power lead and shielding gas hose from the power source
Spool gun
300
The distance from the nozzle tip to the work in the PAC is called what
torch standoff distance
300
Explain what these are and why they are important to us
They are the lines that make up a blue print with out them we can only see a drawing on a single plane, can't shrink drawings to fit normal paper, find center of object, and see hidden objects in one veiw
400
According to OSHA how much acetylene Can be used per hour, why can't more be used
1/7th of a tank per hour can be used, any more and acetone will be drawn up through the torch eating the brass from the inside out
400
_____ _____ ______ produce more spatter because the metal being transferred may drop outside of the molten weld pool
Long Arc Lengths
400
Fast freeze slag is made of what type of flux?
Rutile Fluxes- they are acidic produce a smooth stable arc perfect for out of position welding
400
What kind of power source is needed for CAC-A
Constant Current
400
What type of weld is this joint is this
flared bevel groove weld
500
_______ _________ the lowest temperature at which a material will combust or start burning (there are 2 answers that will work)
Kindling point/ kindling temperature
500
Electrodes that have a softer arc, smooth arc, and produce less welding fumes and sparks use what type of flux
Rutile-based flux
500
When welding dual shield Flux core if you need a concentrated path from the electrode to the weld which results in smaller droplet sizes a smooth arc an less spatter what would you use for shielding gas
Argon CO2 mixture
500
CAC-A Requires how much P.S.I>
40-100 p.s.i
500
These types of drawing are drawn at a 30 degree angle so it appears you are looking at a corner
Isometric drawings