Page 146 - CITS - Welder - Trade Practical

WELDER - CITS

10 Braze the other half of the circumference of the pipe as second run.
11 Manipulate the blowpipe and filler rod with flux applied on it using proper angles to fill the bell mouthed groove.
12 Clean and remove the flux residue

13 Inspect for external weld defects.

Skill Sequence

Silver brazing on copper tube to tube

Objectives: At the end of this exercise you shall be able to
• prepare the brazing of copper to copper tube

Brazing of copper to copper tube
Shen the and of copper tube to be bell-mouthed by seating. (Fig 1)
Dip the heated end in water and remove the oxides. (Fig 2)

Fig 1 Fig 2

Use a mandrel to form the bell mouth. (Fig 3)
insert the mandrel and drive into the softened end of the be by hammering. (Fig 3)
Remove any unevenness of the bell mouth. (Fig 4)

Fig 3 Fig 4

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CITS : C G & M - Welder - Exercise 32