Dieology LLC

Art Hedrick

Contributing Writer
Dieology LLC
8730 10 Mile Rd. SE.
Rockford, MI 49341


Phone: 616-894-6855
www.dieology.com
Contact via email
Author of the "Die Science" column in STAMPING Journal®, Art also has written technical articles on stamping die design and build for a number of trade publications. A recipient of many training awards, he is active in metal stamping training and consulting worldwide.

Stamping | Articles

Die Science: Slug pulling—Causes and solutions

June 11, 2015 | By Art Hedrick

Slug pulling in a stamping die can be costly and frustrating. One pulled slug can cripple production. What Is Slug Pulling? When a pierce punch creates a hole, it also produces scrap, called the slug. When the slug sticks to the face of the punch during withdrawal or comes out of the button...

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Stamping | Articles

Die Science: Step-by-step troubleshooting of stamping dies, Part I

March 6, 2015 | By Art Hedrick

Opinions on how to troubleshoot a stamping operation are not in short supply at any production stamping or die-building shop. I’m not trying to stereotype diemakers, designers, or technicians, but their decisions often are made based on insufficient data. Statistically speaking, if I...

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Stamping | Articles

Die Science: Step-by-step troubleshooting of stamping dies, Part II

March 6, 2015 | By Art Hedrick

In Part I of this article, which appeared in the January/February 2015 issue, I discussed the first two basic steps in troubleshooting: Identify problems with the part and verify the die and press setup parameters. Following are the remaining seven steps in the process. Step 3—Reassess and...

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Stamping | Articles

Die Science: Attempting to defy the laws of physics, Part II

May 10, 2011 | By Art Hedrick

It is almost unrealistic to expect some stamped part part features, such as hole position and flatness, to remain within a small tolerancing zone.

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Stamping | Articles

Die Science: Attempting to defy the laws of physics, Part I

March 11, 2011 | By Art Hedrick

The forms and positional tolerances called out on product designs often defy the physical abilities of the product's material. Proper product and process design, as well as pressure clamping, can help maintain strict tolerances.

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Stamping | Articles

DIEVESTIGATION: Deep-drawing and stretching variables – Part II

December 13, 2010 | By Art Hedrick

This article continues the discussion of deep-drawing and stretching variables begun in Part I by describing friction, thermal expansion, metal topography, and forming speeds and how they affect metal forming operations.

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Steel coils

Articles

Deep-drawing and stretching variables – Part I

October 21, 2010 | By Art Hedrick

Ever wonder why one out of every 500 or so of your deep-drawn or stretched parts splits? Why you can’t make a part consistently? The answer lies in the variables of these operations—variables all metal formers must deal with.

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Die quoting engineers

Stamping | Articles

DIEVESTIGATION: Diemaking, from concept to reality

August 9, 2010 | By Art Hedrick

Just what is involved in die building? Whether you are a die builder or a stamping company that uses dies, this overview can help you understand the many steps required to take a die from concept to production.

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Deep Drawn part

Stamping | Articles

DIEVESTIGATION: Important considerations when designing deep-drawn parts

June 16, 2010 | By Art Hedrick

What is deep drawing? What part parameters require the process? What must you consider when designing a deep-drawn part, and when should you consider an alternate process, such as spinning?

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Drawing and Stretching Diagram

Stamping | Articles

DIEVESTIGATION: Draw or stretch? That is the question

April 13, 2010 | By Art Hedrick

When designing a part, you must decide which is the best way to form it. Should you draw it or stretch it? That depends on several factors, including forming depth.

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oil canning.

Stamping | Articles

Preventing oil canning problems

March 9, 2010 | By Art Hedrick

Oil canning cannot be cured by coining, beating, or reshaping the metal. Instead, it must be prevented by ensuring the sidewalls are not subjected to radial compression.

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Dievestigating Die Stamped Parts

Stamping | Articles

DIEVESTIGATION: Designing stamped parts

February 9, 2010 | By Art Hedrick

In his first installment of DIEVESTIGATION, a new column about using research and data to solve stamping problems, tool and die expert Art Hedrick discusses how the metal specified during part design affects downstream operations and costs. What should you consider when selecting the metal?

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Stamping | Articles

Sheet Metal Stamping 101, Part V

December 15, 2009 | By Art Hedrick

How are bending, flanging, coining, embossing, stretching, curling, hemming, ironing, necking, and drawing related? They all are common metal forming operations. Find out more about these processes in this final installment of stamping expert Art Hedrick's sheet metal stamping series.

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Stamping | Articles

Sheet Metal Stamping 101

December 15, 2009 | By Art Hedrick

Editor's Note: This series presents an overview of metal stamping. Part I focuses on the various careers in the metal stamping industry. Part II discusses stamping materials and equipment. Part III focuses on dies and cutting and Part IV offers more detail about cutting processes. Part V, the final installment, investigates forming methods.

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Trimmed Parts

Stamping | Articles

Sheet Metal Stamping 101, Part IV

October 27, 2009 | By Art Hedrick

Continuing his series about sheet metal stamping, tool-and-die expert Art Hedrick explains common cutting operations used in stamping: trimming, piercing, blanking, notching, shearing, lancing, and pinch trimming. Find out how they work and which applications are appropriate for each.

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