If you are constructing a building that requires the use of stud welding, your contractor may present you with two different stud welding options. The two primary methods of welding studs are CD stud welding and arc stud welding. Here is a quick overview of the differences between these two methods for welding studs. 

The Methods

With a CD stud weld, the stud that is going to be welded is held against the work, then the welding process is started while the stud is pushed downward. The welder turns the stud into molten metal, and it is molded into place. 

With the arc stud welding method, the stud and the ceramic ferrule are placed right against the work area. Then, the stud is lifted up so that the arc can be drawn for the welding process. As the weld begins, the stud is forced into the work plate below it and is molded into place. 

The Uses

CD welding works well when a stud needs to be welded onto thin or sheet grade metal. It is great for jobs that require a variety of different materials. CD welding is also designed to be used with fasteners that have a small diameter.

Arc welding works well when larger diameter fasteners need to be used for your project. You have to use arc welding if you need to use larger fasteners.

Additionally, arc welding is often used to repair and maintain welds that have already been created using either welding method. 

The Aesthetics

CD and arc welding provides you with different aesthetically effects. CD welding does not leave any marking on the reverse side, which means that on the opposite side of the material that the weld is made on will look smooth and untouched. 

On the other hand, with the arc welding method, the weld may extended to the other side of the material. This is done to strengthen the weld. 

If you are in the process of building a structure that requires the use of stud welding, discuss with your contractor which stud welding method, CD or arc, they will be using. There is a good chance that they may use both methods for different purposes; have them explain to your where they will use each welding method and the reasons behind their decisions. This will help you make more informed decisions regarding the construction and future maintenance of your building.