Part No. 729-110-040 Rev. 1.41 | June 2016
© 2016 Nelson Stud Welding, Inc. All Rights Reserved.
8
1.3
Operational Sequence
1. Check all cables are connected properly.
2. Turn on Arc Charger.
3. Load stud into chuck and ferrule into grip (if required).
4. Press gun against work piece at 90
o
angle until either ferrule or spark shield is flush to base material.
5. Initiate weld by pressing gun trigger.
6. The weld process begins with pilot arc, then the stud is lifted. Then the main current welds and just as it
shuts off, the stud is plunged into the base metal.
7. Pull the gun up off the stud.
8. Remove the ferrule (if required) from the cooled stud.
1.4
Ceramic Ferrules
Ceramic ferrules are used with the drawn-arc method. They form a chamber around the weld, which
encompasses the arc and shields the user from the weld spatter.
The ferrules also help to reduce the weld cooling rate and to produce an even shaped weld flash.
The following conditions have to be observed:
An
appropriate ceramic ferrule is required for stud diameters greater than 3/8”.
For differing ceramic ferrules, corresponding ceramic ferrule holders are needed.
The Nelson Stud Welding catalog offers an overview of the Nelson ceramic ferrule product range.
Summary of Contents for ArcCharger N550C DOMESTIC
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