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Bodycote, the world’s largest provider of specialist thermal-processing services, announced the opening of a new facility in Syracuse, N.Y. The 60,000-square-foot facility is operational and offers a wide range of heat-treatment processes, including vacuum heat treating, atmospheric carburizing, low-pressure carburizing, carbonitriding, ferritic nitrocarburizing, nitriding and aluminum heat treating. The site is working toward securing all major OEM approvals as well as Nadcap accreditation, which it is on the way to achieving.
Can-Eng Furnaces International Ltd. designed, built and delivered a mesh-belt heat-treatment furnace line to Gallos Metal Solutions of Milwaukee, Wis. The continuous atmosphere system will be used primarily for demanding processing, including carbonitriding and carburizing, while allowing for neutral heat treatment with a production capacity up to 4,000 pounds/hour. This high-capacity furnace line is part of Gallos’ expansion and modernization project, which has more than doubled the existing plant square footage, increased capacity and added automation.
The carbonitriding of fasteners is of critical importance to their functionality and one of the most common case-hardening heat treatments. Studying how the process works in this application will shed a great deal of light on all carbonitriding processes. Let’s learn more.
Gas carbonitriding is a modified form of the carburizing process and is not a form of nitriding. In this process, both carbon (C) and nitrogen (N) are introduced into the surface of the steel by introducing ammonia (NH3) and a hydrocarbon enriching gas into the furnace atmosphere in order to add nitrogen to the carburized case as it is being produced.
Service Heat Treating, a commercial heat-treating company located in Milwaukee, Wis., has developed an alternative heat-treatment process known as WearAllthat has shown to provide better wear resistance than carbonitriding for a number of critical-service components.
Carbonitriding studies with a high amount of nitrogen are characterized by adding ammonia to the process gas at a higher rate than the usual 3-5%. This work focuses on the impact of nitrogen on the lifetime of carburized parts (e.g. gears, sprockets, bearings, crankshafts) exposed to Hertzian pressure or fatigue.
You have heard the terms carbonitriding and nitrocarburizing and know they are two different case-hardening processes, but what are the real differences between them?