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MIG Welding Quiz
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What metals can readily be welded with the MIG process?
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1 point
Anything that conducts
cast iron
aluminum
copper
Stainless Steel
mild steel
titanium
Required
What are the types of gases that we can use with MIG?
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1 point
C25
100% Argon
Helium
C100
Required
If working on a large project that uses a lot of gas and wire, you should
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1 point
Reimburse the Space for the extra consumables
Nothing its part of my membership fees
Talk to the area manager
work it off by sweeping and doing other tasks
Required
What three things happen when we pull the trigger?
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1 point
pinch roller starts rolling, short circuit transfer starts, Gas solenoid opens and gas stats flowing, power is applied at the contact tube
pinch roller starts rolling, Gas solenoid opens and gas starts flowing, power is applied at the contact tube
plasma comes out the end and melts the steel together
The tube start pushing gas out and the steel comes out the end to create the molten parent metal
If welder is having SERIOUS problem you should
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1 point
pull of cover of two welders and compare outputs
pull of cover and see whats happening inside
red tag and let area manager know
move over to another bay
Required
What must you do to protect against the welding arc when welding?
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1 point
Protect eyes with at least shade 9 glasses, Cover skin with natural fiber clothes
Protect eyes with at least shade 9, Cover skin with natural fiber clothes, Stand behind the curtain
Protect eyes with at least shade 9 helmet, Protect hair with cap, Cover skin with natural fiber clothes, Use natural fiber gloves
What are the most immediate dangers in MIG welding?
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1 point
Arc burn, , Heat burn, Fumes, metal addiction, Falling gas botle
Arc burn, Heat burn, Fumes, Electrical shock, Falling gas bottle,EMF radiation
Arc burn, Fumes, Electrical shock
What should you look at if the bead has bubbles or pits in it?
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1 point
Stick out is too short
Bad gas
wire with rust on it
Fast air movement around welding area
insufficient Gas flowing
Stick out is too long
wire feed speed is too high
Too small a gas bottle
Required
What precautions should you observe when using compressed gas?
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1 point
When stored put cap on
always keep chained to cart
take regulator off each time you finish using
use flash arrestor
Always secure tank
Stand to the side of gauges when opening
smell gas to insure it is of good quality,
look carefully at gauges and open fully
Quarter turn to start then open fully
Required
What would you check if the filler wire is coming out erratically?
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1 point
Free motion of spool
tension of pinch roller
ease of wire feed through sheath
contact tip is free of debris
all of the above
Required
If you want to change the gauge of filler wire, what do you need to change?
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1 point
regulator
Pinch roller
spool of gas
Contact tip
contact roller
Spool of filler wire
Required
What does BASHT stand for?
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1 point
Base, Angle, Stick out, Travel Speed
basic angle of stickout heat tolerance
Base, Angle, Stick out, Head Position, Travel Speed
bass, Angle, Speed, Travel , Head Position
How many degrees do you tilt the torch off of 90 for optimal for welding
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1 point
65-80
15-25
45-60
75-95
When inspecting the ground wire, what things should you check
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1 point
nut securing cable to clamp is secure
cable is not cut or kinked
nut inside cabinet is copper and cable is UL approved
clamping surfaces are bare metal
nut inside cabinet is secure
wire strands are thick enough
Required
what parameters do you need to know to correctly set welder up for mild steel
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1 point
type of material, cold rolled or hot rolled, gas flow rate
gas type, filler type, gap to fill, direction of travel
filler wire diameter, gas type, thickness of material
thickness of material
What controls amperage
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1 point
stick out
travel speed
wire speed
wire diameter
what function(s) does the gas play in welding
1 point
keeps earths atmosphere away from weld
purifies the air
conducts arc to parent metal
keeps toxic fumes away from person welding
What is warpage caused by ?
1 point
bent metal
fumes
hot metal expanding
contracting metal as it cools
crystal structure breaking down
Clear selection
Some of the ways you can control warpage by :
1 point
tacking
jigging
clamping
stamping
Use Jigs and Fixtures
Control Heat Input
use cooler welds
In order to complete the electrical circuit and stay safe while welding what must be in place
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1 point
machine is turn on
ground must be attached to material
gas is turned on and producing an arc
enough amperage must be present to create an arc
Required
What is the proper gas tank handling procedure
1 point
alway secure tank
Always have cap on when moving tank
Insure gas is not too hot
valve should on be open halfway to insure quick closing
stand to the side when opening the tank
If wire stops feeding or is balling at the end what should you check ?
1 point
check if ac power is low
Spool of welding wire has too much rolling restistance
there is a kink in liner
wire is too thick
Contact tip has a restriction
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