Setting Up CD Weld Studs and the Benefits of CD Welding

From production uses like insulation fasteners to heavy-duty composite construction, stud welding is relied on for many purposes. If you’re working with stud welding in any capacity, Northland Fastening Systems (NFS) has the tools for you. We provide stud welding supplies, including tools for rent or purchase, studs in all dimensions with custom options available, and complete welding accessories. In addition to a comprehensive supply of welding equipment, NFS technicians offer expert advice on all stud welding processes, including the use and setup of CD weld studs for effective and quality results.

CD (capacitor discharge) stud welding is a manufacturing technique that’s useful for some of the smaller dimension pins and studs, like the stainless steel studs used in food grade, lightweight welding, for example. Other common applications of CD weld studs are for insulation fasteners, electrical enclosures, internal electronics, and on-board aerospace systems.

Utilizing CD stud welding operations in the appropriate application is highly beneficial for many reasons. Not only does CD welding create a powerful connection point with no mark-through on the opposite side of the weld surface, it’s a rapid process that conserves energy, improves efficiency, and produces a clean finish when done correctly.

Understanding how to set up CD weld studs for the full welding process is critical for performing an effective operation. A CD stud welding process occurs in five basic steps:

  1. Contact of stud tip to weld surface
  2. Ignition of weld tool
  3. “Placement” or pressuring of stud into surface material
  4. Fusion of stud into surface material while both metal are molten from ignition
  5. Cooling of both materials to complete the weld connection

Setup can vary depending on the type of tool you’re using, implementation of different collets, stud dimensions, weld surface material, and electrical specifications. In general, the setup process takes the following steps, and in most cases, will get you ready to weld:

  1. Set up the assembly of “B” collet and “B” stop accessories by loosening the screws at the tip of the gun shaft to allow the installation of these parts.
  2. Ensure the collet is the correct size for stud diameter; then install a correctly paired length of stop into the collet.
  3. The collet and stop should seat correctly into the gun (until it stops completely on insert).
  4. Insert the stud into the collet until it stops fully. The stud should extend past the end of the collet and be held tightly in the gun during welding.
  5. Do not let the stud tip ever come into contact with the collet when the weld is ignited.
  6. Place the leg and foot assembly into the gun to allow ⅛” of the stud protruding past the foot.
  7. Tighten set screws and ensure the area around the weld point and your welding space is clear.

To learn more about this basic process of preparing CD weld studs and other stud welding operations, contact Northland Fastening Systems at (651) 730-7770 or request a quote online.