ARC Weld Studs
ARC Threaded weld studs have a variety of applications from securing metal grating to anchoring crane rails.
ARC stud welding involves the same basic principles and metallurgical aspects as any other arc welding procedure. The weld gun lifts the stud a short distance from the base metal and initiates a controlled electric arc from the power source. This melts the end of the stud and a portion of the base metal. The gun then thrusts the stud into the molten metal. A high quality fusion weld is accomplished where the weld is stronger than the stud itself.
Before welding, a ceramic ferrule or "arc shield" is placed around the tip of the stud. The arc shield holds the molten metal in place during the weld and reduces the amount of weld splatter. After the weld is complete, the arc shield is cracked off (usually by striking it with a hammer or some other heavy object). On smaller diameter studs, a special gas attachment on the welding gun can be used instead of an arc shield. Argon gas is heavier than air, and is used to hold the molten metal in place during the weld cycle.
CD Weld Studs
CD stud welding is compatible which just about any weldable material, and permits the welding of dissimilar metals.
Capacitor discharge welding (CD) involves the same basic principles and metallurgical aspects as any other arc welding procedure. When the weld gun is activated, a special precision weld tip initiates a controlled electric arc from the welder capacitor bank which melts the end of the stud and a portion of the base metal. The stud is held in place as the molten metal solidifies, instantly accomplishing a high quality fusion weld where the weld is stronger than the stud itself.
CD stud welding is generally used to weld smaller diameter studs to thin base metal, especially where reverse side marking is not permissible. Since the entire weld cycle is completed in milliseconds, welds can be made to thin material without pronounced distortion, burn-through or reverse side discoloration. As long as one end of the stud is designed for CD welding, CD studs can be manufactured in almost any shape.
Weld Studs Catalog