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Block 6: MIG Welding Exam Questions and Answers 100% Pass

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Block 6: MIG Welding Exam Questions and Answers 100% Pass Occurs when arc doesn't melt base metal sufficiently and puddle flows onto unmelted base metal. Happens when puddle is too large. - Cold lap (overlap) For an overhead position lap joint you travel smoothly and evenly to ensure - Penetration Comes from removing gun and shielding gas before puddle solidifies - Crater porosity and cracks Welding method where arc extinguishes and arc again at 20-200 times per second, shallow penetration, makes small puddles - Short circuiting transfer Welding method used where gravity could be a factor. Small metal droplets through arc - Spray arc transfer How many degrees should you tilt your work when welding in flat position? - 10-20 degrees What metals are used for weld backing? - Copper blocks, strips and bars, carbon block, fired clay. Cooper is most common Wire guides are made of what? What does it reduce? - Nylon or Teflon; reduces friction and wire sharing

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Uploaded on: April 6, 2025
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block 6 mig welding exam questions and answers 10

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Block 6: MIG Welding Exam Questions
and Answers 100% Pass

Occurs when arc doesn't melt base metal sufficiently and puddle flows onto unmelted
base metal. Happens when puddle is too large. - ✔✔Cold lap (overlap)

For an overhead position lap joint you travel smoothly and evenly to ensure -
✔✔Penetration

Comes from removing gun and shielding gas before puddle solidifies - ✔✔Crater
porosity and cracks

Welding method where arc extinguishes and arc again at 20-200 times per second,
shallow penetration, makes small puddles - ✔✔Short circuiting transfer

Welding method used where gravity could be a factor. Small metal droplets through arc
- ✔✔Spray arc transfer

How many degrees should you tilt your work when welding in flat position? - ✔✔10-20
degrees

What metals are used for weld backing? - ✔✔Copper blocks, strips and bars, carbon
block, fired clay. Cooper is most common

Wire guides are made of what? What does it reduce? - ✔✔Nylon or Teflon; reduces
friction and wire sharing

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