Manufactured since 1986 by Technogénia by means of a patented technique known as cold crucible electromagnetic levitation, this unique and innovative Tungsten Carbide goes by the trade name of “Spérotène®”.
Its main feature is its very fine metallurgical structure known as “tangled needles”.
Sphérotène® consists of spherical particles of extreme hardness : 3000VH ± 500 (VH = Vickers Hardness).
The exceptionally clean surface of Sphérotène® makes the derived products highly weldable.
The spherical shaped particles of Sphérotène® have the advantage of giving maximum compactness. This means that the mean free path between the spheres in the weld deposit is minimal. Therefore, erosion of the softer matrix is minimized.
These particles give deposits a much improved resistance to impact, compared to deposits made up of jagged particles. The round particles allow stress to pass smoothly through the deposit, wereas sharp corners tend to concentrate stress and lead to cracking.
Grains of jagged carbide subjected to repeated shocks may contribute to lead to fissuring through the “corner effect”. A Sphérotène® deposit is not subject to the “corner effect”.
Sphérotène® comes in grain sizes ranging from 40 µ to 2400 µ.
It is used for the various welding products offered by Technogénia :
- Range of Technosphère®
- Technolase® Lasercladding Powders
- Wear parts made out of Technocasting®
It is also essential for users of wear parts that are subjected to extreme conditions of abrasion, in particular the manufacturers of drilling equipment.