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CNC EV Compression Force Table
Chapter 8: Welding Tips and Tricks
Electrode
MAINTENANCE
The condition of the electrode tip can greatly affect weld quality . As weld slag and oxidation builds up on
the electrode, the weld spots can become erratic in size and shape and the arc generation can be affected .
•
Keep the tip as clean as possible throughout the weld process .
•
Ignition settings can be tweaked to help prevent tip erosion and contamination during the welds
(refer to Ignition Section) .
•
Periodically check the electrode during the first weld cycles of a new weld application to establish a
baseline for the number of welds that can take place before the tip needs attention . It is a good idea
to make electrode maintenance part of the SOP for the weld process .
TIP SHAPE
The geometric shape of the electrode can have an effect on weld penetration and quality, depending on
the metals being welded and the application .
•
Flat Tip - A perfectly flat tip is useful when welding “splashy” metals such as silver and aluminum .
Typically, metals that flow well when molten are best suited for a flat tip .
•
Tapered Tip - The tip can be tapered into a flat to help focus the energy for more penetration and
better arc starts, but continue to minimize expulsion during a weld .
•
Sharp Tip - Sharp tips are ideal for applications that need high weld penetration depth, or for
increased arc start capability . The sharper the tip, the easier it is to start the arc . If welds are
continually missed throughout a weld cycle, try sharpening the tip .
COMPRESSION
DISTANCE
1/8”
1/4”
3/8”
1/2”
5/8”
3/4”
RESULTING SPRING
FORCE
1 .5
3
4 .5
6
7 .5
9
