W
Electric current is measured in this scale
What is Amperage
How hot is the puddle in the SMAW process
Hot- up to 10 0000 F
the maximum electrical potential difference (Voltage) between the terminals of a device when there is no load
What is open circuit voltage
Which electrode diameters are better with vertical or overhead positions
What are smaller diameter electrodes
Cracking that occurs shortly after the weld metal has been deposited and is just beginning to solidify is called
What is hot-cracking
This type of current may produce arc blow
What is Direct Current
Electrodes range is sizes from 1/16" to
....To 5/16
SMAW welding machines are this type of power source
What is Constant Current
Which stainless electrode is suitable for welding low-carbon steel to stainless steel
What is E309-15
This is a crack across the face of the weld
What is a Transverse crack
These methods can be used by the welder to spread heat evenly while welding
What is Back-stepping, intermittent weld sequencing and Alternate back-stepping
This is the most common welding electrode length
What is 14"
What is the advantage of DCEN over DCEP in the SMAW process
DCEP ability to produce shallower penetration and faster deposition rates
These three electrodes are suitable for welding cast iron
ECI
ESt
ENi
A crack that is length ways along the weld, sometimes into the base metal
What is a longitudinal crack
List five factors help with metal transfer across the arc?
Gravity, Gas Expansion, Electromagnetic Force,
Electromotive force, Surface tention
EIectrodes are classified according to deposition characteristics.
What are the F catagories
This device changes AC to DC
What is a diode rectifier
These electrodes need to be stored in an electrode oven
Low-Hydrogen
Hard-facing
Special Alloys(eg.stainless steel)
The Mixing of the base metal and hard-facing material
What is dilution
Which ingredient in the flux of welding electrodes is responsible for the inverted cup type characteristics on the coating during welding
What is Cellulose
What organization developed the most general classification for welding electrodes
What is ASME
When you lengthen the arc this happens to the voltage and amperage?
Volts go up
Amperage goes down
This is the proper number and letter abbreviation when a pipe is in a 45 0 incline and fixed position
What is 6G
There are three methods of mechanical distortion control
What are Pre-bending, Clamping, Pre-spacing