Other Skilled Trades Welding 3

Question 1

What does a convex weld bead profile indicate?

Accepted Answer

The weld has insufficient heat or travel speed was too fast

Answer

The weld has too much heat input

Answer

The weld is undercut

Answer

The weld has porosity

Question 2

Which electrode is used for welding stainless steel with the SMAW process?

Accepted Answer

E308-16

Answer

E6010

Answer

E6013

Answer

E7018

Question 3

What is the term for the groove melted into the base metal along the weld toe, reducing the cross-section of the base material?

Accepted Answer

Undercut

Answer

Porosity

Answer

Overlap

Answer

Spatter

Question 4

When qualifying a welder under AWS D1.1, passing a 3G vertical position test also qualifies the welder for which position?

Accepted Answer

1G flat and 2G horizontal

Answer

4G overhead only

Answer

All positions

Answer

No other positions

Question 5

What type of polarity is typically used for SMAW welding with E7018 electrodes?

Accepted Answer

DCEP (Direct Current Electrode Positive)

Answer

AC only

Answer

DCEN (Direct Current Electrode Negative)

Answer

Either AC or DCEN

Question 6

What is the purpose of a preheat and interpass temperature in multi-pass welding of thick steel?

Accepted Answer

To maintain minimum temperature to prevent hydrogen cracking between passes

Answer

To speed up the cooling rate

Answer

To increase welding speed

Answer

To eliminate the need for post-weld heat treatment