Sulphurnitriding Furnace

Gas Sulphurnitriding Furnace - Multinite Process

Application Fields
The multinite process is a revolutionary surface modification technology developed from the multipurpose gas nitriding process. It is a surface modification technology that simultaneously forms a hard and lubricative iron sulphide layer on top of the gas nitriding or gas nitrocarburizing layer. It imparts higher functional properties than conventional nitriding or nitrocarburizing processes, and offer advantages in terms of wear resistance, adhesion resistance (over 900°C), galling resistance and low friction. In addition, nitriding superior to that offered by salt bath nitriding can easily be obtained for austenite stainless steel, heat resistant steel, free-cutting steel, etc. due to the special reducing process of NM gas.

The treatment enables single-step processing equivalent to "nitriding plus low temperature sulphurizing" or "nitriding plus Defric coating", and at low cost, only half that of composite treatment. As the "multi-" in the name indicates, other nitriding processes are also possible. This process is optimal when there is a need for properties above and beyond those offered by gas nitrocarburizing.
Multinite Process
(A)Gas nitrocarburizing Ammonia, Carbon Acid Gas, Nitrogen
(B)Sulphurizing NM Gas, Ammonia, Nitrogen
(C)Nitriding Ammonia, Nitrogen(Hydrogen)
(D)Nitriding of Stainless Steel Ammonia, NM Gas, Actylene.

There are both pit and batch type multinite processes. Contact Parker SN Kogyo in Mito, Asahi-Chiyoda Kogyo in Tajimi, or Nihon Techno in Hasuda with regarding performing sulphurnitriding processing using this furnace.

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