13 Checking The Quality Of The Weld; Carrying Out Visual Inspection - HBS Visar 650 Operating Manual

13 Checking the Quality of the Weld
You can check the quality of the weld by means of a visual inspection and a bending
test.
The number and type or method of the tests to be performed and the acceptance
criteria are defined in respective standards for quality demands.
13.1

Carrying out Visual Inspection

‹ Carry out a visual inspection on all welding elements.
Condition
Collar regular, bright and complete.
Lengths after weld within tolerances
Contraction of weld collar
Welding element too long
Weakly developed, uneven weld collar
with mat surface
Welding element too long
Collar off centre
Undercut
Weld collar low, shiny surface with
many spatters
Welding element too short
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13 Checking the Quality of the Weld

Visual Inspection
Possible cause
Correct parameters
Plunging depth or lift too low
Weld power too high
Ceramic ring not centered
correctly
Plunge rate too high
Weld power too low
Ceramic ferrule is moist
Lift too low
Effect of arc blow
Ceramic ferrule incorrectly
centred
Weld energy too high
Plunging speed too high
Corrective actions
none
Increase plunging depth,
check lift and centering of the
ceramic ring
Reduce current and/or time
Check centering
Adjust plunge and/or gun
dumper
Increase current and/or time
Dry out ferrules in oven
Increase lift
See arc blow effect
Check centring
Decrease current and/or time
Adjust plunging depth and/or
damping factor
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