tig weldinf safety and operations Flashcards
What does TIG stand for
Tungsten Inert Gas
what measures are used to protect individuals from hazards associated with welding ?: WELDING HELMET
UV rays
what measures are used to protect individuals from hazards associated with welding ?: WELDING SCREEN
uv rays
what measures are used to protect individuals from hazards associated with welding ?: LONG SLEEVES AND PANTS MADE OF NATURAL FIBERS
uv rays and sparks fire heat
what measures are used to protect individuals from hazards associated with welding ?: LEATHER GLOVES AND LEATHER SHOES
sparks fire heat
what measures are used to protect individuals from hazards associated with welding ?: ventilation or respirator
fumes
the ground clamp can be connected to the work piece or any other conductive metal in contact with the work piece, when disconnected the arc can’t be ignited , true or false
true
what’s the start up procedures in order of operation
- open the gas tank valve 3 turns
- Turn on the machine
- set the pressure with the regulator knob
- connect ground clamp
- check machine settings and insert sharpened tungsten
number shut down procedures in order of operation
- Turn off the gas
- bleed the line by pressing the foot pedal
- Close or back out the regulator knob
- turn off the machine and tidy up cords
- sweep up area
Match the polarity setting AC or DC (alternating current or direct current): BRONZE
DC
Match the polarity setting AC or DC (alternating current or direct current): STAINLESS STEEL
DC
Match the polarity setting AC or DC (alternating current or direct current): ALUMINUM
AC
Match the polarity setting AC or DC (alternating current or direct current): CARBON STEEL ALLOY
DC
amperage controls the strength of the electrical current, which determines the amount of heat generated to melt the metal and create a puddle true or false
true
The foot pedal initiates the arc and determines how much BLANK goes into the work
Amperage/heat
gas pressure should be set to BLANK times the number size of the cup that sets the amount of shielding gas that is able to flow from the tank through the machine to the torch
2
pre-flow and post flow settings, control what
The length of time the shielding gas flows from the torch as the arc is initiated, and once it is extinguished
The inert or non flammable shielding gas used for TIG welding is 100 percent what
ARGAN
when should you resharpen your tungsten electrode
all of the above
The minimum tungsten stick out should be blank, and the maximum tungsten stick out should not extend beyond the inner *blank * of the cup
a quarter inch
width
when welding the tip of the tungsten should be held centered on the joint, approximately the diameter of the tungsten above the surface, true or false
true , 3 thirty seconds of an inch
after you dab your filler rod into a weld pool, you must keep the hot tip of the rod within the protection of the shielding gas to avoid contamination, true or false
true
*blank *welds are used used to hold parts together before a final weld occurs
tack
