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Home » Authors » John Walters

John Walters

John Walters, a frequent contributor to FORGE, is vice president of Scientific Forming Technologies Corporation, Columbus, Ohio. He may be reached at 614-451-8330 or jwalters@deform.com.

Articles

ARTICLES

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Optimized Cooling Rates of Microalloyed Steels (Part I)

James Miller John Walters C.J. Van Tyne
December 11, 2019
No Comments

This article covers the vexing problem of properly cooling forged microalloyed steels. This first of two parts will discuss the technical and business benefits of forged microalloyed steels.


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fg0818-developing-fig1-900

Developing Optimized and Robust Forging Processes

New process development or the redesign of an underperforming job gives engineers a chance to investigate process influences and design alternatives. Examples of how process simulation has been used in design-optimization projects are detailed.
James Miller John Walters
August 13, 2018
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As forgers are pressured to remain competitive, they must act on opportunities to reduce costs, eliminate scrap and improve operational efficiency.


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It takes an advanced manufacturing process to produce an advanced part

North American Forging is Advanced Manufacturing

Part 8: Above the Shop Floor
Jon D. Tirpak John Walters Mike Ulven Al McCormack
February 3, 2017
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In this final installment of our series “North American Forging is Advanced Manufacturing,” we will explore “above-the-shop-floor operations.”


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The Defense Manufacturing Community's annual conference

North American Forging is Advanced Manufacturing

(Part 7: Developing a Skilled Workforce)
Jon D. Tirpak John Walters
August 8, 2016
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Part 7 in our series on the North American forging industry focuses developing a skilled workforce.


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Simulation in teh forging industry has evolved from simple 2D models to very detailed 3D simulations

North American Forging is Advanced Manufacturing

(Part 6: Modeling, Simulation and Analysis)
Jon D. Tirpak John Walters
June 6, 2016
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This sixth article in our series on the North American forging industry focuses on process modeling, simulation and analysis.


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Versatile process-simulation tools capable of modeling the entire manufacturing process chain are needed in the forging industry

Simulating the Manufacturing Process Chain

James Miller John Walters
April 7, 2016
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The motivation of forgers to understand how design and process changes influence various aspects increases the need for versatile process-simulation tools capable of modeling the entire process chain.


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Advanced manufacturing process control equipment

North American Forging is Advanced Manufacturing

(Part 5: Process Controls)
Jon D. Tirpak John Walters
February 3, 2016
No Comments

Like any advanced manufacturing process or enterprise, process controls are critical in meeting the demanding customer requirements of forged products.


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Grain Flow in Forgings VI

Grain Flow in Forgings VI – Preforms and Open-Die Forging

John Walters C.J. Van Tyne
December 4, 2015
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Grain flow is the orientation of grains and inclusions/particles within the metal caused by plastic deformation.


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TimkenSteel forging its specialty steel billets

North American Forging is Advanced Manufacturing

(Part 4: Advanced Alloys)
Jon D. Tirpak John Walters
October 9, 2015
No Comments

This article – the fourth in our series – concentrates on advanced raw materials, which add shape and value to materials ranging from specialty and microalloyed steels to metal-matrix composites.


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Bar size and rotation angle are the design of experiment (DOE) variables

Design of Experiments and Optimization in Process Simulation (Part 2)

James Miller John Walters
October 7, 2015
No Comments

In this second of two articles about design of experiments (DOE) and optimization, we illustrate how they apply to forging design.


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