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.
Pressure Pad diagram

Attempting to defy the laws of physics, Part II

May 10, 2011

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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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Attempting to defy the laws of physics, Part I

March 11, 2011

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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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DIEVESTIGATION: Deep-drawing and stretching variables – Part II

December 13, 2010

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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

Deep-drawing and stretching variables – Part I

October 21, 2010

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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

DIEVESTIGATION: Diemaking, from concept to reality

August 9, 2010

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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

DIEVESTIGATION: Important considerations when designing deep-drawn parts

June 16, 2010

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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

DIEVESTIGATION: Draw or stretch? That is the question

April 13, 2010

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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.

Preventing oil canning problems

March 9, 2010

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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

DIEVESTIGATION: Designing stamped parts

February 9, 2010

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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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Sheet Metal Stamping 101, Part V

December 15, 2009

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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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Sheet Metal Stamping 101

December 15, 2009

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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

Sheet Metal Stamping 101, Part IV

October 27, 2009

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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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Stamping die punch cavity

Sheet Metal Stamping 101, Part III

August 25, 2009

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Continuing his series about sheet metal stamping, tool-and-die expert Art Hedrick focuses on die basics, including die materials and rudimentary maintenance. He also explains the cutting process and what happens to metal when you cut it with a stamping die.

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'Bad' steel — the ultimate scapegoat

August 1, 2009

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It seems like every time there is a problem making a good part, the steel is blamed. Often the root problem is the process used to cut and form the steel — the combination of the die, the press, and the lubricant.

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Stainless steel sink

Sheet Metal Stamping 101, Part II

June 9, 2009

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Thinking about adding metal stamping to your capabilities? Read this primer about the materials and equipment, including the different types of stamping presses, and view images of stamped parts, which can be both highly functional and aesthetically pleasing.

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