Page 266 - CITS - Welder - Trade Practical

WELDER - CITS

EXERCISE 66: Monitor Square butt joint on Aluminum
sheet 3 mm thick in Flat position by GTAW

Objectives

At the end of this exercise you shall be able to
• weld square butt joint in Aluminum sheet 3mm thick using TIG welding process.
• add filler metal at the required rate and place by manipulation the filler rod
• deposit fusion run with filler rod in flat position and maintain uniform arc travel speed
• clean and inspect the deposited beads for surface defects.

Job Sequence
• Prepare aluminium sheets as per dimensions.
• Use Tungsten zirconium 3mm size electrode

• Clean the edges of the sheets
• Select the various parameters as given in the table 1and set them accordingly.
• Weld the joint in flat position using leftward technique.
• Fill the crater.

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