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Home » Authors » Daniel Herring
Daniel Herring

Daniel Herring

Dan Herring is president of THE HERRING GROUP Inc., which specializes in consulting services (heat treatment and metallurgy) and technical services (industrial education/training and process/equipment assistance). He is also a research associate professor at the Illinois Institute of Technology/Thermal Processing Technology Center. tel: 630-834-3017; e-mail: dherring@heat-treat-doctor.com; web: www.heat-treat-doctor.com

 

Articles

ARTICLES

fg0221-carbonitriding-lead-900

Carbonitriding of Fasteners

Dan herring
Daniel Herring
February 12, 2021
No Comments

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.


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Decarburized steel microstructure

Decarburization

Dan herring
Daniel Herring
July 30, 2018
One Comment

There is a group of recurring questions asked of The Heat Treat Doctor, all of which are centered around: “How much surface oxidation is allowable on a steel part?”


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Finely dispersed alloy carbides in a matrix of tempered martensite
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Alloy Carbides

Dan herring
Daniel Herring
July 17, 2018
No Comments

The subject of carbide formation in steels has intrigued The Doctor ever since he first peered into a microscope and observed them. Carbides can be our friend or our enemy.


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Arno Bernard Knives: Bush Baby Series - Giraffe Bone, N690 steel

Just What Do You Call Dirt on Mars, Earth?

Dan herring
Daniel Herring
May 29, 2018
No Comments

Most, if not all, heat treaters – whether they like to admit it or not – enjoy the challenges that present themselves when confronted by a new material or the need to develop a new process recipe to achieve specified properties or results.


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