Page 195 - CITS - Welder - Trade Practical

WELDER - CITS

EXERCISE 50(A) : Perform Lap joint on M.S. plate (10 mm.
thick plate) in flat position by GMAW

Objectives

At the end of this exercise you shall be able to
• prepare plate pieces to size as per drawing.
• set and tack weld the plates in alignment as lap joint as per drawing.
• set the lap joint in flat position for welding.
• set up the GMAW machine and set welding parameters.

Job Sequence

- Cut the plates by gas/hacksawing cutting as per drawing
- Set the pieces in the form of Lap as per drawing

- Tack weld on both ends of the tee joint
- Keep the tack welded job
- The welding can be done in flat/down hand position
- Deburr and clean the surface of the plates by carbon steel wire brush and filling.

- Set the plate A on the plate B in the form of lap per drawing
- Clean the root run using steel wire brush
Note: Wear protective clothing.

• Tack-weld on both ends.
• Set the lap joint in a flat position.
• Deposit root run by using a 100-110 amps current.

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CITS : C G & M - Welder - Exercise 50(A)