SMS group brings together two promising technologies: wire arc spraying and an all-digital current/voltage source developed in-house. This resulted in the thermal arc spray system PERFECT spray® − for the treatment of metallic and non-metallic surfaces.
With the wire arc spraying system for thermal spraying according to DIN EN ISO 14917, SMS group opens up whole new markets in the corrosion, wear protection and servicing sectors: due to control-specific and design-related disadvantages of wire arc systems available on the market, end users had to accept significant restrictions regarding layer quality and process efficiency till now. Through new approaches in electric arc control, an open linear design and the development of SMS group’s own gun concept with pressure-loss-optimized, turbulence-reduced and high-expanding nozzle system significant improvements in process efficiency and layer quality can be achieved.
The new wire arc system is modular in design and includes ceramic inner flow contours adapted to the corresponding coating application which have been engineered to gas-dynamic factors and can be adapted to the desired gas flow rate or mass flow. There is the possibility to direct the gas flow to the wire ends in a clear supersonic range (gas flow velocity larger Mach 1) or retard the gas to subsonic speed – depending on material or application case.
It is possible to process almost all metallic materials which are deliverable in wire form. By the option of separately controlled wire feeds different cathode- and anode-side materials can be processed, to produce alloys and pseudo-alloys in the process (for example a combination of steel and nickel or aluminum and copper).