Taylor 1200E, Руководство по эксплуатации

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V - 21A
VISUAL WELD INSPECTION
16
This page will help you to recognise a poor weld when you see one and give some of the
possible explanations as to how it may have occurred. Your test welds should look like the
first example diagram in the series and once you transfer to the actual job, periodic checks
should be made to ensure that your welding is consistently good.
POINTS TO LOOK FOR IRRESPECTIVE OF PROCESS USED.
•
L.A.W. (Length After Welding). This should be correct to within the tolerances
specified for the type of stud being welded.
•
The base fillet of the welded stud is complete.
•
The welded stud is perpendicular to the work - piece.
WHEN USING A CERAMIC FERRULE.
This diagram is a representation of a good normal weld, fulfilling the criteria
above i.e. The LAW is correct, the stud has a complete, well formed and even
fillet and is also perpendicular to the work
- piece. The following examples will
help you to recognise the most common types of poor weld, explain the
possible causes of these problems and make suggestions as to how to remedy
them.
EXAMPLE 1
PROBLEM : Insufficient heat and/or time causing the LAW to be too long
and the fillet to be underdeveloped and/or incomplete.
REMEDY : Increase the welding current/time (see page 13).
EXAMPLE 2
PROBLEM : Excessive heat and/or time causing the LAW to be too short
and the fillet to be too large and messy, spreading out under
the ferrule and/or splashing up the threads.
REMEDY : Reduce the welding current/time (see page 13).
EXAMPLE 3
PROBLEM : The ferrule is not being held firmly against the work - piece
and/or the stud is binding against the ferrule.
REMEDY : Hold the pistol firmly down to the work - piece (see page 14)
and reset the alignment of the stud and ferrule (refer to your
pistol setup guide).
✓
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