Artech welders

What is Capacitor Discharge Stud Welding?

May it be a small welding enterprise or a huge industry conducting various manufacturing operations every day, saving time is crucial. Using portable, easy-to-use stud welding to install various types of fasteners can make the work facile. Capacitor Discharge stud welding, often known as ‘CD’ stud welding, is a part of a big family of fastening methods called Stud Welding. So, let’s understand Stud Welding before diving deep into the CD Stud Welding.


Stud Welding is an economical & fast method of welding studs. It can weld studs of different diameters & shapes onto the parent material. Unlike other forms of joining that require operations such as tapping and drilling, Stud Welding is done onto the parent material without creating holes. The portability of stud welding machines, easy operation, and cost-effectiveness are a few biggest reasons it is one of the widely preferred welding options worldwide.


Stud Welding is categorised into two major types- Capacitor Discharge (CD), Welding & Drawn Arc (DA) Welding. Wondering which one is better? Well, both are equally important types of Stud Welding. Choosing the suitable process involves a careful decision based on the parent material, required weld strength, the diameter of the stud, the thickness of the parent material, and required welding aesthetics. Drawn Arc (DA) Welding is majorly used for heavy parent materials & high diameter studs. In contrast, CD Welding is used for thin parent materials.


Capacitor Discharge Stud Welding is an affordable, fast type of welding. Using lightweight, portable capacitor discharge welding machines like the ones at Artech are highly beneficial for industries & enterprises. CD stud welding eliminates processes such as drilling, punching, tapping, riveting, screwing, and more. It is highly beneficial when the parent material is thin. CD welding does not need flux. The weld time is shorter, and it enables the weld to bond with minor oxidation; In this welding method, a small projection/pip at the end of the stud comes in contact with the workpiece. The energy from the charged capacitors gets discharged across the point of contact resulting in stud projection melting and creating a molten pool in the parent material. During the process, the stud is pushed into the workpiece under controlled pressure to complete the weld. The best part, it all happens real quick!


  • CD Stud Welding is perfect for flawlessly welding studs.
  • It is ideal for applications where minimal or no marking on the backside is desirable.
  • The Capacitor Discharge Welding Machines are portable. It is considered lightweight welding equipment.
  • The weld cycles are short and work under low temperatures. Weld time is between 1 and 6 milliseconds.
  • CD Stud Welding can be used on thin parent material.
  • The process is time-saving and cost-effective.
  • No additional material necessary, such as flux, inert gas, etc.


CD Stud Welding is used in the following products.

  • Control Panels
  • Elevator Control Panels
  • Stainless Steel Cookware
  • Stainless Steel Kitchenware
  • Insulation Fixing
  • Electrical Control Panels
  • Electrostatic Precipitators

Being in the Welding Machine Industry for years, Artech Welders understand how important it is to have robust yet lightweight CD welding machines for rapid welding actions, flexible options, minimal operator fatigue, and more. We offer CD Stud Welding machines that are designed to join small-diameter studs to thin base metals. Our machines can weld studs of diameter  < 10 mm, weld dissimilar metals, etc.  Artech’s machines are a leading way to drive product innovations through advanced welding technology. Make your welding process bliss with Artech’s welding machines. Get in touch to order now.

 Shift to better welding with Artech!