Gas Quenching with Helium

Paul Stratton; Igor Shedletsky; Maurice Lee

doi:10.4028/www.scientific.net/SSP.118.221

Paper Titles

Micro-Hardening of Carbon Steel with a Direct Diode Laser
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Effect of QPQ Salt Bath Oxidation on Corrosion Resistance
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Effect of Fine Particle Bombarding Treatment Conditions on Surface Origination of Materials
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Gas Quenching with Helium
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The Effects of Probe Geometric Shape on the Cooling Rate Curves Obtained from Different Quenchants
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State of the Art and Prospects on Laser Clad Multiphase Transition Metal Silicides Wear and Corrosion Resistant Coatings for the Aerospace and Petrochemical Industries
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The Design and Application of a Novel Duplex Coating Formed by Laser Pre-Treatment
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Characteristics of TiAl-Doped DLC/TiAlN/TiN Multilayered Coatings Synthesized by Cathodic Arc Evaporation
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HomeSolid State PhenomenaSolid State Phenomena Vol. 118Gas Quenching with Helium

Gas Quenching with Helium

Abstract:

Gas quenching in vacuum furnaces is an increasingly attractive option because it has a low environmental impact and the least distortion of parts being treated. Whilst nitrogen is by far the most common quenching gas, helium is a viable option where higher cooling rates are required, particularly for carburised components. This paper explores the improvements in gas quenching technology that allow components manufactured from standard carburising steels to be quenched with high-pressure helium and illustrates the improvements it offers over high pressure nitrogen quenching. As helium is an expensive rare gas, recycle systems make its use more economically attractive. The factors that need to be taken into account when designing such systems, including the necessity for purification, are discussed. Sources of helium and the means of delivery, particularly in Asia, are also covered.

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Periodical:

Solid State Phenomena (Volume 118)

Pages:

221-226

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.118.221

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Online since:

December 2006

Authors:

Paul Stratton, Igor Shedletsky, Maurice Lee

Keywords:

Cooling Rate, Costs, Helium, Quenching, Recycle, Vacuum Furnace

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