TW4300 Welding Hints and Suggestions
Stud Welding
•
Keep weld studs and ferrules clean and dry
•
Set the time for the appropriate weld base diameter (see chart on page 20)
•
Set the amperage for the appropriate weld base diameter (see chart on page 20)
•
Make sure the negative polarity is to the weld stud gun and ensure a good, clean ground
connection
•
Align accessories so they are centered and adjust legs so that 3/16” to 1/4” of the stud
protrudes beyond the ferrule
•
Make sure work surface is relatively clean so impurities do not affect weld
•
Remove all coatings from weld areas
•
Test the welds at the beginning of each shift or change in stud size. Bend two studs 30° after
cooling (AWS Bend Test)
•
Check burn off (1/8” – 3/16”), color (silver
-
blue and shiny), and weld fillet (360°).
•
Visually inspect all welds
To ensure satisfactory welds, bend test a minimum of one stud out of every one
-
hundred, by striking
stud with a hammer and bending the stud 15
o
from its original axis
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