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Heat Treating Hintssm
© 1995-2009
The Herring Group, Inc.

Heat Treating Hintssm is one of our ways of sharing knowledge with the Industry we love. This is a changing series of technical articles which will be updated every month, and is designed to inform and educate. We cover a wide range of subjects extracted from our vast library of technical knowledge.

“The Heat Treat Doctor” presents…

 

Endothermic Gas Generator Maintenance & Safety Checklist

Maintenance of an Endothermic gas generator is critical to the operational success of the heat treat department,Maintenance and Safety Checklist and as essential as on any furnace or piece of machinery in the manufacturing operation. The maintenance of this unit is a team effort between the Heat Treater and maintenance department. It is strongly recommended that a detailed log be kept of not only the maintenance performed, but the operational condition based on a daily review of the generator performance. The Heat Treater is the first line of defense in helping to spot and track changes in generator performance. This checklist will help.
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Cleaning of Fasteners Before & After Heat Treating

Many fastener heat treatment operations must deal with poorly cleaned parts. This is especiallyCleaning of Fasteners challenging with respect to controlling the furnace atmosphere and also results in higher than normal equipment maintenance. While most atmosphere heat treat processes can tolerate some degree of wet or oily parts, there is no excuse for not taking the time to understand how to better clean these products.
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Consideration in Heat Treatment - Part One: Types & Purpose of Furnace Atmospheres


A critical consideration in heat treatment is the type, consistency and control of the furnace atmosphere. Considerations in HT Part 1The article discusses the purpose of a furnace atmosphere and how it must vary to achieve the desired end result. A technical explanation of the types and uses of the various furnace atmospheres is provided.

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Consideration in Heat Treatment - Part Two: Furnace Atmosphere Control

The composition of the furnace atmosphere is dynamic and constantly changing, so we must use measurement Considerations in HT Part 2and control devices to ensure good quality control. In particular, for atmospheres designed to run "neutral," that is, provide a stable platform for enriching gas additions or to avoiding decarburization and/or carburization. This is accomplished by making sure that one or several of the following control methods is monitoring and/or controlling the process: (a) dew point analysis; (b) infrared analyzer (single- or multiple gas analyzers); (c) oxygen (carbon) probes and (d) shim stock analysis.
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Generic and practical information is presented on this Website and in these downloadable files.  It is not intended to replace or supplement federal, state, and local codes, government standards, insurance requirements, company policies and procedures, or common sense. In addition, all equipment manufacturers’ instructions and operating and maintenance manuals should always be thoroughly read and followed. Further, personnel training should be provided unequivocally to everyone who will be associated with operating such equipment. It is the responsibility of the individual downloading this information to pass along these and other warnings as appropriate prior to the use of the material. The Limit of Liability Statement found elsewhere on this Website applies to this information.

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Daniel H. Herring - The Heat Treat Doctor

ILLINOIS INSTITUTE OF TECHNOLOGY

Associate Research Professor


Monthly Columnist
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Contact Us for an initial consultation and to discuss your Heat Treating and Sintering needs.
The HERRING GROUP, Inc.
P.O. Box 884
Elmhurst, IL 60126
Tel: 630.834.3017
Fax: 630.834.3117
Cell: 630.640.9048
Daniel H. Herring
“The Heat Treat Doctor”
dherring@heat-treat-doctor.com