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1-4 of 4
Réal J. Fradette
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Proceedings Papers
HT2017, Heat Treat 2017: Proceedings from the 29th Heat Treating Society Conference and Exposition, 545-549, October 24–26, 2017,
Abstract
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A new high strength and energy efficient graphite board (HEFVAC) was introduced in fall 2016 as a vacuum furnace insulation package, which has evolved with the goal of further reducing power consumption. The unique features of the HEFVAC material offer a new approach to the design and construction of a vacuum furnace hot zone. Our presentation will document the thermal advantages of the HEFVAC board as well as introduce a new hot zone design that integrates the board into a self-supporting structure. This new design offers greatly improved thermal efficiency, resulting in reduced power usage compared to current vacuum furnace hot zones.
Journal Articles
Journal: AM&P Technical Articles
AM&P Technical Articles (2017) 175 (4): 56–58.
Published: 01 May 2017
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A novel hot zone design featuring new graphite boards reduces heat loss and improves overall hot zone power requirements.
Journal Articles
Journal: AM&P Technical Articles
AM&P Technical Articles (2015) 173 (6): 40–44.
Published: 01 June 2015
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Residual gas analysis shows that vacuum furnaces with graphite hot zones are more economical than all-metal designs and are capable of producing contamination-free surfaces.
Journal Articles
Journal: AM&P Technical Articles
AM&P Technical Articles (2015) 173 (3): 40–42.
Published: 01 March 2015
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Emissivity is a term used to define the ability of a surface to emit and absorb radiation. At any given temperature, the emissivity of a body (or surface) equals its absorptivity. Development work on a vacuum carburizing process revealed the need to better understand the effect of workload surface emissivity and the proper use of dummy thermocouple test blocks. This article reports on the findings from this research effort.
