HBS presents MARC, a manual nut welding system which is more and more replacing traditional processes all over the world due to the innovative procedure with a magnetic rotating ARC.
Regardless of whether only static stability is required or if additional, customerspecific connection properties (e.g., pressure tight) need to be fulfilled, you always achieve the best results - with considerable time and cost savings.
Spatter free joints can be achieved with a high welding cycle time of up to 10 welds/minute. This is especially suited for thin metal sheets from 1 mm upwards.
MARC provides the access to a new future to international trusts, medium-sized companies as well as to crafts enterprise.
MARC - MAGNETIC ROTATING ARC - Nut Welding with rotating arc
Functional welding sequence:
The nut is placed onto the base material - the current circuit is closed
Preflow of shielding gas
Coil current is switched on and magnetic field is generated
Power unit is switched on and arc voltage is provided
Lift of nut/sleeve
Ignition of pilot arc and then ignition of welding arc between nut and plate
Burning of rotating arc along the ring-shaped welding area
At the end of welding time, the nut is lowered and plunged into the liquid weld pool
Electrical short-circuit and cut-off of welding current
Formation and solidification of weld seam with post-flow time of shielding gas
Examples of applications nut welding (MARC)
Welding on pads and nuts on punched and unpunched metal sheets.
Applications are e.g. sprinkler systems, ventilation tubes, hinges, pressure vessels, exhaust systems.