MIG Welding
Name:__________________
Date: _________________
Block:__________________
1) What does MIG stand for?
________________ _________________ ______________
2) What does GMAW Stand for?
_____________ _______________ _______________ _______________
3) What is the basic advantage of MIG welding over ARC welding?
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4) Label Diagram
5) “The current used is DC with reverse polarity which provides deep __________________”
6) What are the two main controls on the front of the MIG welder? (not on/off switch) ________________________ __________________________
7) “It is important to keep a pair of ________________ handy at all times to your MIG welder.”
8) What is the contact tube, or tip, usually made of? ____________________
9) The size of the tip is determined by the size of the __________________.
10) What does nozzle spray or jell do?
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11) What are the two types of smaller MIG welding machines?
_________________________________ _________________________________
12) “The flux-cored wire machines do not make as _____________________a weld,”
13) What is the main advantage of flux-cored MIG machines?
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14) What are the two primary benefits of a gas shielded MIG welder?
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15) Name 3 special tips that can be used for very specialized MIG welding situations.
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16) What capacity is the smallest available gas bottle? _________________________
17) What 3 gasses are talked about in the different shield gas mixtures?
_____________________ _____________________ ____________________
18) What is the most common de-oxidizer? ______________________________
19) What kind of wire would you use for aluminum welding?
_________________________________________
20) A jam up of wire inside the MIG welder is called a “__________ _________”
21) To prevent this (question 20) you need to make sure the drive rollers can ___________ if the wire welds to the tip.
22) What are the two torch holding techniques called?
_____________________________ ____________________________
23) On 1/8” or thicker metals the edges should be _____________________.
24) If you are constantly __________________ _________________ the metal, your heat or voltage setting is too high.
25) Label bead:
26) “warpage is a problem unless you _____________________________________ ________________________________________________________________”
27) What is the visual defect of the following problems?
A) Arc length too long: __________________________________
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B) Rust on the metal: __________________________________
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C) Speed too slow: __________________________________
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