Deposit welding

Applications of local deposit welding are found in where tools need modifying or repairing. This can be due to errors in making or specifying the tool or due to damage as a result of manufacturing operations or extended use. Forming, stamping or injection molding tools may periodically require re-conditioning, particularly production-intensive ones.

The material-related advantages over the conventional processes of arc or resistance deposit welding are due to higher heating and cooling speeds as well as smaller melting volumes. This is as a result of reduced thermal influence of the base material and subsequently distortion, loss of strength and crack formation are less of a problem. Furthermore, better layer characteristics can be achieved through fine-grained structures or the use of filler metals with higher melting temperatures. From a production engineering point of view, laser-based processes help achieve significantly smaller filigree structures, as welding wires of diameters down to 100 µm can be processed.