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.
Slug pulling diagram

Stamping | Articles

Die Basics 101: Part XI

December 12, 2006 | By Art Hedrick

Slug pulling is a serious problem in a stamping operation. Addressing the issue requires first understanding why the slugs are pulling. What Is Slug Pulling? When a pierce punch creates a hole, it also produces scrap, usually referred to as a slug. Slug pulling occurs when the slug sticks to the...

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Stamping | Articles

Solving punch breakage problems

December 12, 2006 | By Art Hedrick

This series of articles investigates the many causes of premature punch breakage in stamping operations.

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Stamping | Articles

Die Science: Setting up progressive dies - Part II

October 10, 2006 | By Art Hedrick

Proper feeding, scrap removal, and shut height calibration are essential for good die setup.

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Stamping | Articles

Die Basics 101: Part X

October 10, 2006 | By Art Hedrick

Cutting is the most severe metalworking process that takes place in a die and shouldn't be taken lightly. Cutting Basics Cutting metal requires great force. For example, it takes approximately 78,000 lbs. of pressure to cut a 10-in.-diameter blank from 0.100-in.-thick mild steel. Consequently,...

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Stamping | Articles

Die Basics 101

October 10, 2006 | By Art Hedrick

Editor's Note: "Die Basics 101" is a 17-part article.

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Stamping | Articles

Die Science: Setting up progressive dies - Part I

October 3, 2006 | By Art Hedrick

Editor's Note: "Setting Up Progressive Dies" is a two-part article. Part I discusses press and die cleanness, die alignment, clamping procedures, and preliminary shut height calibration. Part II discusses the process for getting metal into the die, setting the pitch, feed release, and other factors...

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Stamping | Articles

Die Science: Unique forming short cuts

August 8, 2006 | By Art Hedrick

Die designers often are faced with how to make a part feature that is unique and possibly difficut to form. Short cuts are discussed for twisting a part, creating a return flange, and making a 90-degree bend.

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Stamping | Articles

Die basics 101 starts with eight basic components

August 8, 2006 | By Art Hedrick

A stamping die is a special, one-of-a-kind precision tool that cuts and forms sheet metal into a desired shape or profile. Most dies are constructed of several basic components, including die plates, shoes, die sets, guide pins, bushings, heel blocks, heel plates, screws, dowels, and keys. Dies also need stripper, pressure, and drawing pads, as well as the devices used to secure them—spools, shoulder bolts, keepers, and retainers; and gas, coil, or urethane springs.

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Stamping | Articles

Die Basics 101: Part IX

August 8, 2006 | By Art Hedrick

Part VIII of this series discussed some of the specific mechanical properties of metals—ductility, elongation percentage, tensile and yield strength, and hardness—and how to derive these properties. This article describes other important mechanical properties, as well as a few behavioral...

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Stamping | Articles

Die Science: The process of fineblanking

July 11, 2006 | By Art Hedrick

Fineblanking can achieve flatness and cut edge characteristics that are unobtainable by conventional stamping and punching methods. Fineblanking is described in relation to conventional methods to encourage a better understanding of its benefits and limitations.

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Stamping | Articles

Die Science: Die building

June 13, 2006 | By Art Hedrick

In any stamping process including progressive dies, transfer dies, or line dies, three factors are essential to consider when processing a piece of flat metal into a finished part: What is the metal? What is the metal's thickness? What are the part tolerances?

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Stamping | Articles

Die Basics 101: Part VIII

June 13, 2006 | By Art Hedrick

Figure 1 Part VII of this series introduced two basic types of metals used to manufacture stamped parts—ferrous, metals that contain iron, and nonferrous, metals that do not contain iron. This article discusses the specific mechanical properties of these metals in more detail.The metal's...

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Metals/Materials | Articles

Die Science: Defining material specifications

May 9, 2006 | By Art Hedrick

The root cause of splitting problems in deep-drawn parts often is that the process is not designed and engineered to accept the full range of mechanical properties within the ASTM specifications.

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Metals/Materials | Articles

Die Science: Guidelines for forming high-strength material

April 11, 2006 | By Art Hedrick

High-strength materials are becoming more common in stamping, especially for the aircraft and space industries. Although they all have their own specific features, they have some common characteristics and typical reactions to stretching and drawing.

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Stamping | Articles

Die Basics 101: Part VII

April 11, 2006 | By Art Hedrick

Previous articles in this series focused on stamping dies and production methods. This article discusses stamping materials—both ferrous and nonferrous.To process, design, and build a successful stamping die, it is necessary to fully understand the behavioral characteristics of the specific...

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