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Title Energy efficient heat-treating furnace system
Creator/Author Lippert, C.G. ; Meyer, R.W.
Publication Date1980 Sep 30
OSTI IdentifierOSTI ID: 6541337
Report Number(s)US 4225121
Resource TypePatent
Resource RelationPat. File: Filed date 23 Mar 1979
Subject320303 -- Energy Conservation, Consumption, & Utilization-- Industrial & Agricultural Processes-- Equipment & Processes ;421000 -- Engineering-- Combustion Systems; ;CARBURIZATION-- FURNACES;FURNACES-- DESIGN;FURNACES-- ENERGY EFFICIENCY;METAL INDUSTRY-- FURNACES; AIR HEATERS;FORGING
Related SubjectEFFICIENCY;FABRICATION;HARDENING;HEATERS;INDUSTRY;MATERIALS WORKING;SURFACE HARDENING;SURFACE TREATMENTS
Description/Abstract A method and apparatus are disclosed for heat-treating parts in a furnace system which uses a minimum total amount of energy.^The self-contained, continuous heat-treating system includes components such as a carburizer, a tempering furnace, and a part cooler.^Energy transfer between these and other components operable at different temperatures and/or energy requirements are used to maximize thermal efficiency of the system.^Furnace components are provided and interconnected so that combustion air for radiant tube heaters supplying thermal energy to parts in a high temperature furnace such as a carburizer is preheated by exchanging heat in a part cooler and by recuperation of the carburizer exhaust; combustion products from the carburizer supply energy for reheating parts in a lower temperature furnace such as a tempering furnace; the tempering furnace exhaust is used for preheating parts prior to their entry into the carburizer; and energy transferred by the parts to a quench medium is used to heat water for subsequent washing of the parts.^In one arrangement of components a tempering furnace is mounted on top of a carburizer as part of a compact multi-level configuration.^In another arrangement the components form a single level system with energy transfer features and high thermal efficiencies similar to those of the multi-level system.
Country of PublicationUnited States
LanguageEnglish
FormatPages: v
RightsHolcroft
System Entry Date2001 May 13

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