Page 23 - CITS - Welder - Trade Practical

WELDER - CITS

Note: Keep a distance of about 5mm between the work piece and the nozzle.
• Release the cutting oxygen and observe the cutting action.

• Move the cutting blowpipe towards the other end, following the procedure line.
Note: Maintain a correct speed and distance of the nozzle.
• Close the cutting oxygen and shut off the flame on the completion of the cut.
• Clean the cut and inspect for its accuracy.
• Repeat the exercise till a good and smooth cut is achieved.

Skill Sequence

Straight cutting along by hand

Objectives: At the end of this exercise, you shall be able to
• set an oxy-acetylene plant for gas cutting
• gas cut in a straight line by hand
• inspect the faults in a gas cut.

Setting the gas cutting plant: Set the oxy-acetylene plant and connect the cutting blowpipe.
Setting the job for cutting (Fig 1)
Set the job for cutting on a rigid surface.
Provide overhang so that the parting piece is free to fall.

Ensure the underside of the cut line is free from any obstruction.
Wear safety apparel while gas cutting.
Adjusting the cutting flame Select the cutting nozzle and set the gas pressure as per the cutting job thicknesses.
(Table 1)

Fig 1 Fig 2

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CITS : C G & M - Welder - Exercise 04