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.
August 25, 2009 | By Art Hedrick
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.
August 1, 2009 | By Art Hedrick
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.
June 9, 2009 | By Art Hedrick
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.
April 14, 2009 | By Art Hedrick
Metalworking professionals who possess diverse proficient skills have an edge in a tight job market. In this first installment in a series, tool-and-die expert Art Hedrick presents an overview of the metal stamping industry and describes the various careers available in the sector.
February 10, 2009 | By Art Hedrick
Art Hedrick, longtime consultant to the sheet metal stamping industry, has observed three internal factors that can negatively affect an operation. In this economic climate in which so much is at stake, you want to make sure that your business does not suffer from these self-destructive characteristics.
December 14, 2008 | By Art Hedrick
Effective stamping professionals rely on scientific principles and not magic to determine and correct production problems. Find out how to troubleshoot wrinkles and rips and take corrective action by following a basic procedure that can be modified to troubleshoot almost any stamping issue.
October 28, 2008 | By Art Hedrick
You're almost at the end of a production run and your stamping die fails. What do you do? Replace the failed component? Attempt a repair? How do you decide which option is best? These questions—along with basic guidelines for repairing a die by welding—are answered in this article.
August 12, 2008 | By Art Hedrick
Among the many factors to consider when designing and building a stamping die are the material to be processed, the press that will run the die, and specified part tolerances. Inadequate knowledge of these factors can contribute to die failure and production and quality problems.
June 17, 2008 | By Art Hedrick
Determining a part's forming severity, something that is critical for a successful stamping operation, takes into account various data. This article discusses the different types of data and how each is obtained. It also compares circle grid analysis to square grid analysis.
May 1, 2008 | By Art Hedrick
Looking at the results of a process—in this case, the strip produced in the die—certainly can lead to good data indicating the root cause of a problem. Distorted, elongated pilot holes, mismatched cuts are common defects. Distorted pilot holes can be the result of a poor carrier design. An improperly set up feed release can cause misfeeds, pilot hole elongation, and bent, broken, or galled pilots, as well as poor part location and gauging.
April 29, 2008 | By Art Hedrick
Many factors influence tool steel selection. Part Iof this article focused on selecting the right cutting clearance. Part II discusses properties to look for in tool steel and the importance of heat treating, preparation for production, coatings, lubricants, and the press on which the tool...
April 15, 2008 | By Art Hedrick
Die design and building is a critical part of a successful extrusion process. ironing—vertically squeezing the metal between the punch and the die to increase the surface area—helps refine the extruding process, as does preforming.
March 15, 2008 | By Art Hedrick
Extrusion is the process in which a continuous radial stretch flange is created by expanding a hole. Of all of the factors controlling the success of an extruding operation, material type and its mechanical properties are the most influential. Materials exhibiting good stretch capability and stretch distribution characteristics are best suited for extruding.
February 12, 2008 | By Art Hedrick
Selecting the right cutting clearance and tool for an application is among the challenges stampers face. Material properties and other factors influence this decision. Following some basic guidelines presented in this article can help you select or design the best tool for your needs.