Sursulf Nitriding Treatment

• HEF India Private Limited
• Chennai

Sursulf Nitriding Treatment

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HEF India Private Limited offers Sursulf Nitriding Treatment. This is a salt bath nitriding treatment, using sulphur as a catalyst, and operated at 565 ±5ºC. It is meant for solution of problems of: seizure/ adhesion, wear/abrasion, fatigue, pitting and corrosion on all ferrous alloys (steels, irons, sintered irons).

Advantages:

• The particular composition of the salts (Li+, K+, Na+/CNO-, CO23-) ensures better chemical and thermal stability and its greater fluidity ensures less products consumption
• The very high nitriding potential is a result of the particular composition of the regenerator salt, the use of a catalyst (active sulphur) which increases the kinetics of nitrogen diffusion and encourages the formation of a homogeneous layer of and nitrides
• The catalyst also allows the structure and thickness of this layer to be adjusted to give better solutions to problems of either wear, pitting, fatigue or seizure, adhesion, scuffing
• The process is flexible, simple to apply and to maintain, with minimum costs of running

Properties of the Sursulf treated components: resistance to wear, abrasion and pitting, arising from the fact that the single phase compound layer is hard and ductile and has good frictional properties. Resistance to seizure, scuffing, thanks to the unique structure of the surface layer, which acts to: inhibit welding; avoid adhesion by metal transfer; facilitate running-in; and delay the onset of breakdown of the oil film. The exceptional nitriding potential of Sursulf results in high residual compressive stresses, which allows a considerable increase in superficial and general fatigue resistance. The production of a single phased compact surface layer encourages corrosion resistance. Numerous customers and licensees of Sursulf process decided to use it because of its: simplicity, reliability/ reproducibility, exceptional properties, low operating costs.