FAQ´s
tem@teandm.pt

EAWS - Electric Arc Wire Spray

thick coatings

THERMAL PROJECTION

In this process, an electric arc is established which causes the fusion of two wires continuously fed . By means of a jet of high pressure air is projected molten metal onto the substrate .

With this process coatings are usually produced intrinsic porosity of about 3 %, and the levels of adhesion of 40 MPa . The typical thickness of the coatings produced with this technology is between 300 and 2.000μm .
MATERIALS AND METAL ALLOYS:

Mo99.9+, Cu5Al, Ni20Cr, Sn7,5Sb3,5Cu,  AISI420, AISI316, AISI304, Liga C-276, etc…

  • Raw material : wire.
  • Typical feedstock flow : 10 to 20 kg / h.
  • Typical particle velocity of 100 m / s .
  • Power source: electric arc.
  • Temperature energy source : 5500 º C.
  • Typical voltages accession : 15-40 MPa.
  • 3% typical porosity .
  • Thickness of layers : 200-5000 microns.
OBJECTIVES

Adapt and improve surfaces for applications that will be submitted , giving them characteristics:

  • Resistance to wear (abrasion , erosion and friction) ;
  • Resistance to corrosion and oxidation ;
  • Conductivity or electrical insulation, thermal or magnetic ; optics ;
  • Biocompatibility .
CUSTOMER BENEFITS
  • Increased longevity of the components;
  • Cost reduction ;
  • Reduced downtime / maintenance ;
  • Increased overall productivity ;
  • Better product quality .

 

back to top