Page 217 - CITS - Fitter Trade Pactical - Volume - 2
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FITTER - CITS




              Fig 4














           Depostion of final/caping bead (Fig 5)


              Fig 5




















           Deposit the final covering bead using a Ø5.mm M.S. electrode, 220 amps welding current, and imparting a wider
           side-to-side weaving motion to the electrodes. Pause (stop) the electrode weaving at the toes of the weld so that
           undercut defect will get eliminated.

           Cleaning and inspection
           Clean the welded jont thoroughly from both sides.
           Inspect the weld size, surface defects, root penetration and distortion.


           Edge preparation

           Objectives: At the end of this exercise you shall be able to
           •  types of edge preparation.



           The preparation of edges are necessary prior to welding in order to obtain the required strength to the joint.
           Joining edges are prepared for welding by one of the methods mensioned below
           Flame cutting
           Machine tool cutting

           Machine grinding or hand grinding
           Filing
           Chipping

           Types of edge preparation and setup
           Different edge preparations generally using in arc welding are shown in Fig 1



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                                            CITS : C G & M - Fitter - Exercise 54
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