Lectures 7-8 Processes Flashcards
1
Q
Advantages to SMAW
A
- portability
- versatility
- cheap compared to other high priced processes
2
Q
Disadvantages to SMAW
A
- electricity use
- ## harmful fumes released
3
Q
GMAW stands for
A
gas metal arc welding
4
Q
GMAW is a.k.a
A
MIG/MAG
5
Q
MIG/MAG stands for
A
Metal inert/active gas
6
Q
GMAW is ——- and ——— compared to SMAW
A
cheaper, quicker
7
Q
Advantages to GMAW
A
- versatility - can weld lots of metal types
- high weld speed
- automation
- better production efficiency due to not needing to replace the electrode
8
Q
Disadvantages to GMAW
A
-
9
Q
FCAW stands for
A
flux cored arc welding
10
Q
FCAW has two protection methods, what are they
A
- self-shielded method
- gas-shielded method
11
Q
Disadv. to FCAW
A
- filler metal is more expensive GMAW filler
- ## requirement to remove slag after welding
12
Q
Adv. to FCAW
A
-
13
Q
Most common method of non-consumable weld
A
- GTAW or gas tungsten arc welding
14
Q
Adv. to GTAW
A
- high quality weld finish
- no slag defects
- works well for complex geometries or sheets
15
Q
Disadv. to GTAW
A
- high level of skill required
- expensive due to use of inert gases
- slower production rates
16
Q
Resistance welding uses a combination of — and — to accomplish coalescence
A
heat and pressure
17
Q
How is the heat generated in the RW process.
A
generated by the electrical resistance to current flow through the two sheets of metal
18
Q
What is another type of RW?
A
Resistance spot welding
19
Q
Adv. to RW
A
- no filler material
- high production rates
- lower operator skill required
20
Q
Disadv. to RW
A
- high intial equipment cost
- limited to lap joints
