Page 247 - CITS - Welder - Trade Practical

WELDER - CITS

EXERCISE 59(B) : Fillet T joint on aluminium plate. 6 mm

thick 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 corner joint
• set the corner joint in flat position for weld
• clean and inspect for surface defects and penetration.

Job Sequence

- Cut the plates by gas cutting as per drawing

- Set the pieces in the form of corner joint as per drawing
- Tack weld on both ends of the corner joint
- Set the joint on the welding table in flat position
- Connect the torch to the positive terminal of the machine
- Set 90-100 A current/corresponding wire feed rate,19 to 20 arc voltage and deposit the run using Dip transfer
mode
- Deposit run in the joint by forming a key hole and obtain complete penetration and even fusion of plates
- Ensure good leg length and even fusion of plates

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