Question

Which of the following statements is/are correct in respect of welding of pieces in upset welding?

            1. The ends to be welded should touch each other before current is switched on.

            2. The ends to be welded should touch each other after current is switched on.

            3. The two pieces have to be pressed together after desired welding temperature is reached.

            Select the correct answer using the code given below:

            (a) 1 only                     (b) 1 and 3

            (c) 2 only                     (d) 2 and 3

Answer 1

b

it is used for butt weld n which pieces are touched and current is passed, then when req. temp. is reached

pressure is applied