Nitriding

The process of nitrocarburizing (popularly known as nitriding), has a large and growing field of application in the treatment of parts and tools in several segments of industry.

The term nitrocarburizing means an enrichment of the surface of ferrous materials with nitrogen and a small amount of carbon. This thermochemical treatment provides the parts with exceptional increase in the wear, fatigue, seizure and corrosion resistances.

The processes ARCOR® and TENIFER® have been used for decades all over the world in several segments of industry, and have been increasingly preferred as alternatives to other surface engineering processes, such as carburizing, carbonitriding, galvanic coatings (like chrome, zinc, nickel and cadmium), and even gas or plasma nitriding or nitrocarburizing processes, nearly always with better results, higher savings, and in full conformity and with respect to the environmental legislation.

As the treatment is performed under low temperature (if compared to other thermochemical processes) it additionally offers the advantage to generate extremely low dimensional distortions.

The nitrocarburizing processes from Durferrit, when combined with a quenching bath with oxidant characteristics (process Q), and when necessary associated with a superficial finishing stage (process QP) followed by a new superficial oxidation (process QPQ), provide the parts with extremely low friction coefficient and surface roughness, high corrosion resistance and black decorative surface.

The processes ARCOR® and TENIFER® have been also excellent choices to allow substitution of stainless steel for mild steel, generating cost reductions.

 Some examples of typical applications of the processes ARCOR® and TENIFER®:

• Automotive motor valves

• Crankshafts

• Camshafts

• Aluminum extrusion dies

• Forging dies

• Wiper shafts

• Gears

• Hydraulic cylinders

• Gun parts

• Ball studs

• Gas springs

 Several other applications have found in the ARCOR® and TENIFER® processes the definitive solution to solve their problems of wear, fatigue, seizure and corrosion.

 Durferrit do Brasil has in the city of Diadema a complete line for demonstration of the ARCOR® and TENIFER® processes and for the development of new components and applications.

 Contact us to know more about applications and advantages of the processes ARCOR® and TENIFER® and to know our licensees.