Projection welders allow joining of particularly massive metal elements for which spot welding would be diificult or impossible. Projection welding machines have a higher welding force as compared to other welder types. During welding process, the electric current flow melts the projections forming metallic joints in these places.
The machines are provided with a modern mikroprocessor control system type Ratia 73 IQ1 produced by Harms+Wende which ensures precise setting of the welding process parameters (welding current and time) and stabilizes the welding current at supply voltage variations. The permanent monitoring of the welder status by the self–diagnostics system increases its reliability, protects against damages and facilitates trouble-shooting.

Equipment of the ZGm-250:
• control system Ratia 73 IQ1 Harms+Wende;
• Mundus ß compact panel supplied by Harms+Wende;
• welding parameter registration system Technitron WS 80;
• protective cage made of aluminium panels;
• optical and protective barriers Sick;
• system ensuring quick replacement of tooling;
• lighting of the welding area;
• lighting of the machine.