stud welding equipment

Understanding stud welding

Today I will be discussing the definition, applications, diagram, types, working, machine, advantages, and disadvantages of stud welding. Previously, some articles were published on arc welding. Check below:


What is stud welding?

Generally, stud welding is a process by which a stud metal or fasteners is joined to a workpiece by using arc heat to weld both parts together. It is a fast-fastening process that is performed in a few steps when compared with other processes. The fastener may be threaded, unthreaded, tapped, etc. and they can of various materials such as steel, stainless steel, aluminum, etc.


The followings are the applications of stud welding:

  • It is a widely used process as provides a single-sided phase, covering the stud zone.
  • It is used for managing wires around equipment
  • Widely used in shipbuilding and military applications
  • It is also used on moving equipment like automotive, construction, agriculture, trailers, etc.
  • Finally, it is used in buildings and bridges.

Read more: different between welding and brazing joining process

Diagram of stud welding:

diagram of stud welding


stud welding machine and equipment

Read more: Different types of welding defects and remedies

Types of stud welding

The various types of stud welding include arc stud welding, capacitor discharge stud welding, and automated and robotic stud welding.

Arc stud welding

Arc stud welding is a reliable method of fastening for a wide variety of applications. It can quickly weld any size, and create strong, one-sided welds on the base metal, even as thin as 0.048 inches. It uses a DC power supply to create the arc, which produces the joint in just 0.06 seconds.

This process has three common techniques which include: drawn arc stud welding, short arc stud welding, and gas arc stud welding.

Capacitor discharge stud welding

In these types of stud welding, flux is not required and the welding time is shorter compared to arc stud welding. Also, this enables the weld to bond with little oxidation and not require heat concentration. This stud welding also allows for small-diameter studs to be welded to thin, or light materials.

Capacitor discharge weld studs range from 14 gauge to 3/8″ diameter. They are available in many different lengths, ranging from 1/4″ to 5″ and larger. They are usually made from mild or stainless steel, brass, aluminum, and aluminum alloy. The tip on the weld end of the stud serves a twofold purpose:

  • It acts as a timing device to keep the stud off the base material.
  • It disintegrates when the trigger is pulled on the gun.

Read more: Understanding the friction welding process

Automated and robotic stud welding

There are portable stud welding machines, but the CNC version has automated the work, with controls for arcing and applying pressure. CNC stud welding machines increase the speed and accuracy of manufacturing and construction work. Stud welding is versatile; typical applications include automobile bodies, electrical panels, shipbuilding, and building construction. Although, shipbuilding is one of the oldest uses of stud welding, and the process revolutionized the shipbuilding industry. Other manufacturing industries can also use stud welding for a variety of purposes, from electrical and mechanical to decorative and consumer products

Read more: Understanding welding inspection

Watch the video below to learn the working of stud welding:

Advantages and disadvantages of stud welding


The followings are the advantages of arc stud welding

  • It offers excellent joint
  • Ability to produce the full cross-sectioned weld
  • It offers a stronger bond to the surrounding metal
  • It produces a one-sided weld
  • The joints are vibration-proof, resist breakage, and weakening or losing
  • Its end products are appealing and attractive
  • It gives greater design versatility
  • It is economical, due to the elimination of through-hole penetration
  • The operation can be done by one person.

Read more: 5 different types of welding Joints

That is all for this article, where the definition, applications, diagram, working, advantages, and disadvantages of stud welding are being discussed. I hope you enjoyed the reading, If so, kindly share it with other students. Thanks for reading, see you next time!


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