The Merits of Solid Tungsten Carbide Nozzles

          COSMOS wire guide nozzles in Solid Tungsten Carbide offer the following advantages:

                Thoroughly mirror finished wire entrance, exit and bore surfaces
                   eliminate insulation damage
                 Superior rigidity
                 Capable of being fabricated to complex geometries
                 Concentricity to within 0.01 mm      

          Shown above are images of COSMOS solid tungsten carbide wire guide nozzles,
validating some of the merits:

         Left      -       A mirror finished fish-eye exit of an armature coil winding nozzle
         Center  -      The complex geometries of armature coil winding nozzles
         Right    -      A precisely defined entrance radius of a COSMOS tungsten carbide nozzle
      

Technical Data

          Hardness value:           1,400 – 1,600 Vickers, which is 1.7 times that of hardened carbon steel
                                                 (See Hardness Comparison - Wikipedia for hardness conversion )

          Young's modulus:         450 - 650 MPa

          Fracture toughness:     6 - 8 MPa m^1/2

          Surface roughness:      0.05 – 0.1 microns or 2 – 4 micro inches Ra.

          Bore diameter:              Choice of 0.15, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 1.0,
                                                  1.1, 1.2, 1.3, 1.4, 1.5, 2.0 mm.

          Outside diameter:          0.5 – 6.0 mm, wall thickness governing.

           Length:                           10 – 100 mm, aspect ratio governing.

          The Wire Guide Nozzles Part Number System innovated by COSMOS in 1993 is applicable in describing our 1-diameter and 2-diameter wire guide nozzles.  The 3-diameter and complex geometry wire guide nozzles are best described in dimensional drawings.

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