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Gas carburizing
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gas carburizing
gas carburizing
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Characteristics

Type
gas
Applications
automotive, agriculture, for railway, for the aerospace industry, for the maritime sector, for the nuclear industry, medical, military, for the construction industry, chemistry, for electronics, for renewable energy, for telecommunications, for aeronautics, for the food industry
Certifications
OHSAS 18001, ISO 9001, ISO/TS 16949, ISO 14001

Description

Nitrocarburising is a variation of the case hardening process. It is a thermochemical diffusion process where nitrogen, carbon, and to a very small degree, oxygen atoms diffuse into the surface of the steel part, forming a compound layer at the surface, and a diffusion layer. Nitrocarburising is a shallow case variation of the nitriding process. This process is done mainly to provide an anti-wear resistance on the surface layer and to improve fatigue resistance. Benefits of nitrocarburising -Relative low cost; -High resistance to wear; -Excellent scuffing and seizure resistance; -Fatigue properties improved by up to 120%; -Considerably improved corrosion resistance; -Good surface finish; -Negligible shape distortion; -Predictable growth characteristics; and -Alloy substitution – plain carbon steels replacing low alloy steels. Application & materials Advantages of the process include the ability to harden materials which are not pre-hardened, the relatively low temperature of the process which minimises distortion, and relative low cost in comparison to carburising or other case hardening processes. Typical industries: Oil and gas, valve, pump, agriculture equipment, automotive, stamping, textile, extrusion and injection moulding, and firearms components. Typical parts: -Oil and gas – gears and pinion shafts -Valve components – gates, seats, balls, stems, regulator valves -Pump components – impellor housings, bodies, plungers, cylinders -Agriculture equipment – harvesting combine cutters, separators, crop transfer, chopping components -Automotive – diesel engine oil pumps, gears, crankshafts and camshafts

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