The stud will be inserted into the chuck of the stud welding gun and positioned onto the workpiece possibly by adding a ceramic ferrule.
Ceramic ferrules for stud welding.
They are taken out of the mold and are dried.
First the ferrule helps to shield the arc from the operator.
Ceramic ferrules are essential part of the standard shear connectors shear studs drawn arc stud welding process.
In the process the shear connector will insert into the center hole of the ceramic ferrule the ceramic ferrule will be pressed on the welding surface by ceramic ferrule holder by the force of spring device inside the welding gun.
Because of this manufacturing method ceramic ferrule tolerances can be greater than machining or.
Without ceramic ferrules the drawn arc process wouldn t be effective and welds wouldn t be as strong.
Third the ferrule forms the molten metal into the fillet.
Ferrules are disposable items.
As disposable items they are mass manufactured quickly and inexpensively.
Ceramic ferrules for arc stud welding are disposable items.
Ferrules are cast in a mold out of a low grade moldable ceramic.
The use of a ferrule is required for stud welding in order to concentrate the heat and retain the molten metal at the base of the stud until it has cooled.
Our ceramic ferrules can go from ambient temperature to weld temperature in a split second and resist cracking or exploding.
To understand why it s important to know how drawn arc stud welding works.
After cooling the ferrule is broken off to reveal the weld.
Initiating the welding process.
Second it minimizes the atmosphere that the flux must purge.
Why are ceramic ferrules essential for stud welding.
Firstly the drawn arc machine is set up for the appropriate stud diameter.