Professional Bench/Welding Technologies
Shortening an In-Line Bracelet Using
Pulse-Arc Welding Techniques
Knowing how to tack-, fusion- and pulse-arc-weld at the bench saves time, increases quality
and boosts profits for your shop and service department
This in-line bracelet needs to be shortened by two links. The bracelet is held together by a single link-wire wrapped around an open portion of the adjacent link and permanently joined, giving the bracelet maximum flexibility. Following is a procedure for shortening, reassembling and permanent welding of the link.
Important: All tack- and pulse-arc equipment settings will differ and are based on the volume and alloy of the material youre working with. Using like materials will give you a parameter for the settings required for your application. Keep a record of settings and tasks for future reference.
If you have questions about this process, contact Mark B. Mann at email@example.com. This installment is sponsored by ABI, Cranston, RI. For information related to ABI, call Janet Kirk at (888) 494-2663.
|Know Your Equipment
The weld pencil contains an electrode (4). The electrode is inserted through the base metal housing thats inserted in the threaded weld-pencil tip (2). A ceramic tube (3) is also inserted into the tip and secured by tightening the allen screw with the ABI-provided key-wrench (1).
Over time, the electrodes tip becomes misshapen from use. Its best to keep it rounded at the end by sanding. While shaping the electrode, clean and shape the ceramic tip. For this procedure, the tip of the electrode is recessed 1mm inside the ceramic tube.
For this pulse-arc welding procedure, the weld pencil with a #2 electrode and ceramic tip is used (1), attached to the positive lead. The contact pad is attached to the negative lead. For easiest viewing of the work-in-progress, the contact pad rests on a lowered flat bench pin.
by Mark B. Mann
Photos by Mark B. Mann
©2003 Visual Communications