Arc Stud Welders: Precision Tools for Superior Welding

Arc Stud Welders - Precision Tools for Superior Welding Results

Capacitor Discharge (CD) welding is an easy and quick stud welding method with superior results: high tensile strength, complete weld penetration, minimal undercut, expulsion and consistent appearance. Unskilled workers can learn this process quickly while minimal maintenance costs remain involved.

Drawn Arc stud welding provides a stronger single-sided weld than CD welding, accommodating surface curvature as well as surface imperfections such as light rusting, mill scale build up or grease deposits - making it suitable for leakproof applications.
Precision

Arc stud welding is an economical fabrication method with fast results that provide superior weld strength and aesthetic appeal. This one-sided process does not require drilling, punching, tapping, or riveting and makes this technique an ideal solution for applications requiring a hole-free weld.

Stud welders use spring tension to hold metal studs securely within them. An electrical arc is initiated when one end of the stud meets base material; once heated up, its heat penetrates and concentrates within a ceramic arc shield's ceramic core to form a molten pool from which high quality and permanent welds form.

This method involves plunging a stud downward with a predetermined force to complete its weld cycle and create an extremely durable weld bond resistant to pulling. It is available for welding various diameters and materials including mild steel, stainless steel and aluminum.
Repeatability

A good stud welder should produce consistent and repeatable results over time, while its appearance will depend on whether its gun has been correctly set up, maintained and utilized.

The drawn arc process is an efficient welding technique that produces strong one-sided welds on base metal surfaces with one pass. Furthermore, this method creates full cross-sectional welds which make them less susceptible to loosening during vibrational motion.

Under this process, a metal stud is loaded into the chuck of the weld tool with its ferrule attached and when the trigger is pressed, DC power supply activates an internal lift system to raise and move it so as to draw pilot arc into position over base metal for welding. With portable equipment this process offers up to 30 studs per minute; using automatic equipment it can reach 1,800 an hour. Furthermore, eliminating drilling, punching, tapping and riveting has resulted in cost savings as well as faster fabrication overall.
Efficiency

Stud welding is a fast and convenient way to fasten metals for various applications, eliminating the need for drilling or tapping holes and producing no leaks while requiring less maintenance than other fastening methods.

Capacitor discharge (CD) stud welding uses an ignition tip on the end of each weld stud to initiate the arc, with a gun then pushing them into a molten pool in order to fuse fasteners onto parent material.

CD welds are reliable and tend to 'adhere' closely to the base of a stud, unlike drawn arc welds which create thermal rear side markings that compromise their effectiveness. CD welds provide reliable results without thermal rear side markings on either side - the ideal combination.
Safety

Drawn arc stud welding provides secure and leak-resistant connections essential for hydraulic lines, air and fluid lines in machinery, electrical enclosures, switch cabinets and other industrial equipment. Furthermore, drawn arc welding can also be employed when building underground systems such as sewer pipes, water supply networks or electrical conduits to provide safe connectivity and ensure reliable connectivity between components.

During this process, fastener and ceramic ferrule are held under spring tension by the stud welder using an aluminum shield designed to focus and retain heat generated from an electrical arc between its end of metal stud and parent material on work surface. This arc melts both ends of metal stud and substrate while plunging it into weld area to fuse welds together into high quality and strong welds for secure connections.

An ideal weld is defined as a continuous DC weld that exhibits failure of the stud before failure in the weld itself, showing proper burn-in and providing even and consistent distribution of weld current in 360-degrees around its base.