Homework 5
Due: Dec 4th
Arc Welding
1. What is the difference between a gas shield and flux?
2. Describe the mechanism of a short circuit metal transfer.
3. Explain the role of high and low current in the pulse transfer mechanism.
4. What does current effect in arc welding?
5. What does voltage effect in arc welding?
6. How is current regulated in MIG welding?
7. Rods for Shielded Metal Arc Welding are coded as such “E6011”. Indicate what each
character represents.
8. From highest to lowest rank the temperature for the following gas shields: Argon,
Helium, CO2.
9. Why is tungsten selected as an electrode in TIG welding?
10. What classification of gas is needed to generate plasma?
