Page 90 - CITS - Welder - Trade Practical
P. 90
WELDER - CITS
EXERCISE 15 : Fillet lap joint on MS sheet 2mm thick in
flat position (OAW)
Objectives
At the end of this exercise you shall be able to
• set and tack the job to form a lap fillet joint with recommended overlap
• weld lap fillet joint using correct size filler rod and nozzle in flat position
• clean and inspect the weldments of the lap fillet for weld defects.
Job Sequence
• Prepare the job as per drawing and clean the edges.
• Set the job on the welding table to form a lap joint.
• Set the gas welding plant, fix nozzle No. 5 and set a pressure of 0.15 kg/cm for both gases.
• Select a C.C.M.S. filler rod 1.6 mm ø for tacking and 3.00 mm ø for welding.
Note : Wear safety apparels and use gas welding goggles.
• Set the neutral flame.
• Tack the pieces at both ends and also in the centre using a 1.6 mm ø filler rod.
73
