smaw joint Design, Parts of the weld, and welding positions quiz + midterm

list the 5 joint designs

butt joints, lap joints, T-joints, corner joints, and edge joints

list the 3 types of welds

Groove, fillet, and plug and slot.

 list the four welding positions

Flat 1G, Horizontal 2G, Vertical 3G, Overhead 4G

list 1, 2, 3, 4 + 5 CONVEX FILLET

1: leg and size

2: actual throat

3: effective throat

4: convexity

5: theoretical throat

list 1, 2, 3, 4 + 5 CONCAVE FILLET

1: size (inside

2: leg (outside

3: concavity

4: actual and effective throat

5: theoretical throat

what type of weld is this

groove

list the two types of Power Output

CC + CV

 list the two types of current used for arc welding

DC+ AC

to list the three types of polarity

Electrode Positive, DC+, DCEP, Reverse

Electrode Negative, DC-, DCEN, Straight

Alternating Current, AC

Current is and how it is measured

Current (amps): Volume of electrons

Voltage is and how it is measured

Voltage: Pressure pushing electrons

Polarity

is the direction of electron flow. (DC+, DC-, AC)

What type of Power Output do we use for SMAW?

CC

 definition of Discontinuity and Defect

welding discontinuity is any interruption in the structure of a weld. A defect is a discontinuity that exceeds code limits and makes the part unacceptable for use.

 which electrodes we “Whip & Pause.” 

E6010 and E6011

Why do we “Whip & Pause”?

Increase penetration and control the puddle

what shade lens we have been using for SMAW.

10-12

list polarity and amps for: 6010 (1/8), 6013(1/8), 7018 (3/32), 7018 (1/8)

6010 (1/8): DC+ 90 amps

6013(1/8): DC+,DC-, AC 130 amps

7018 (3/32): DC+,AC 90 amps

7018 (1/8):DC+,AC 125 amps

identify weld Discontinuities