Capacitor Discharge (CD) stud welding with tip ignition
HBS stud welding units provide outstanding reductions in costs and
time. Every weld is precise avoiding any need for post treatment.
Contact or gap
In contrast to contact welding, with gap welding the stud is positioned at a defined distance shortly before welding starts. This creates a higher plunging speed which leads to a shorter welding time (only 1 ms!).
This characteristic also allows welding of touchy materials like e.g. aluminium and brass.
Gap welding is different from the procedure described above: Before welding starts, the stud is positioned in a defined and adjustable distance above the work piece (gap). After triggering the welding process, the stud is accelerated by a spring to the plate surface. If there is contact between the ignition tip on the work piece, the process continues as described above. Welding time is approx. 1 msec; thus e.g. welding of aluminum becomes feasible without using a shielding gas atmosphere. Recommended plate thickness should be 1/10 d, but not less than 0.5 mm.
Typical applications include: Sheet metalwork, electronic industries, switchboard cabinets, laboratory and medical equipment, food industry, household appliances, etc. When studs are welded to thin sheets (steel, aluminium and brass), the procedure of tip ignition will always be the most cost effective process and sometimes the only solution.