Question

Which of the following is not correct about submerged arc welding?

(a) high deposition rate

(b) short set-up time

(c) high quality welds

(d) slag removal needed

I had been asked this question in an online interview.

This interesting question is from Welding Process topic in portion Welded Connections of Design of Steel Structures

Answer 1

Correct option is (b) short set-up time

For explanation I would say: The following are some advantages of submerged arc welding: (i) high deposition rate, (ii)high quality welds with good ductility, high impact strength, good corrosion resistance, (iii)good for welding long joints(in excess of 1m), (iv)no eye protection required. Some disadvantages are : (i) long set-up time, (ii)slag removal needed, (iii)used for flat or horizontal fillets only.