Technopowders PTA

Since 1986, Technogenia has manufactured cast tungsten carbide grains using a unique patented process: cold crucible fusion by electromagnetic levitation.

This innovative product is marketed under the name of SPHÉROTÈNE ®. It is characterized by a very fine metallurgical acicular structure.

SPHÉROTÈNE ® is delivered in the form of extremely hard spheres - between 3000HV and 4000HV ( Hardness Vickers ).

Because the spheres are produced in an inert environment the oxygen and free carbon levels are low and yield a most weldable surface condition. The spherically shaped particles of SPHÉROTÈNE ® have the advantage of agglomerating with maximum compactness, thus producing deposits where the mean free path between carbide particles is maintained at a minimum.

This spherical from gives deposits made with SPHÉROTÈNE ® considerably higher resistance to impact than deposits made using angular shaped particles. Angular carbide grains in a welded deposit that are subjected to a cyclic stress frequently percipitate cracks through the weld matrix that in turn precipitate into the weld substrate. The sharp corners of angular particles are also more easily melted and form hard brittle alloys that further nurture crack formation.

"PTA 211" powder has been specially developed for transferred plasma applications. SPHÉROTÈNE ® is available in grain sizes of 40 to 160 microns, meeting all Technogenia's quality requirements.

Technopowders PTA 211

  • Basic Alloy: NiCrBSi powders: Matrix hardness 40 Rc
  • Composition: 40% NiCr matrix & 60% Spherotene 40 to 160µ
  • Applications: with PTA torches
  • 1kg container ( Other compositions and packaging formats are possible on request. )

The "Cold Crucible" process:

Melting temperature: 2700°C – 2800°C / 4892°F &ndash 5072°F.
This patented process gives the tungsten carbide unequalled Hardness up to 3500 HV ( Hardness Vickers ) and more.
Grain size: 40µ to 2400µ
Very fine metallurgical structure.
500 X SPHÉROTÈNE ® + Knoop indentation under 1kg = 2.2 lb. load.
The spherical shape of the SPHÉROTÈNE ® gives them, amongst other advantages, two interesting properties: a better shocks and abrasion resistance.

Downloads

Datenblatt PTA (englisch) >> Download

TECHNOGENIA Verschleißtechnik Broschüre (14,6 MB – PDF-Dokument)

TECHNOGENIA Verschleißtechnik e.K.
Birkenweg 8 | D-89555 Steinheim am Albuch
Telefon: +49 (0)7329 / 91 78 40 | Telefax: +49 (0)7329 / 91 78 42
E-Mail: kontakt@technogenia.de

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