Stamping Articles


Filter Content

Die Science: Drawing and stretching

July 1, 2015 | By Art Hedrick

When I conduct training seminars on drawing and stretching, I usually bring with me a variety of unusual parts made using those processes. Often, attendees ask how to stretch the metal into a shape such as a deep can or deeply formed part without splitting the metal. I simply answer: “We don’t....

Continue Reading


Ask the Stamping Expert: How can I evaluate the performance of recycled lubricant in-house?

June 29, 2015 | By Thomas Vacca

Q: I have an issue regarding the consumption of stamping lubricant in our facility. The toolroom is requesting to use only new lubricant rather than recycled, as well as a richer lubricant mix in some tools. This is increasing our lubricant and disposal costs. Is there a test that I can perform...

Continue Reading


R&D Update: Forming aluminum alloys at elevated temperatures, Part 1

June 11, 2015 | By Taylan Altan, Ph.D., Long Ju

To reduce vehicle weight, automotive manufacturers are using advanced high-strength steels (AHSS) and aluminum alloys, formed at room temperature, as well as hot stamping of boron steels. A few OEMs and Tier 1 suppliers also have started warm forming aluminum alloys, usually 5000 and 6000 series,...

Continue Reading


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...

Continue Reading


Ask the Stamping Expert: Upfront spending reaps long-term savings

June 10, 2015 | By Thomas Vacca

Q: The cost of building new progressive dies has gone up substantially in the past few years. I am struggling, and in many cases lose money, on my tool builds. How is the industry expected to cope? A: This is a common problem throughout the metal stamping arena. It’s not easy to remain...

Continue Reading


Flight of a complex progressive stamping--from customer print to finished part

June 1, 2015 | By Ross Weber

A complex stamped component begins its journey as a part print. Then a CAD layout drawing marks the progression; a 3-D model fleshes out the form and indicates any possible interference; and the die is put through a test run before the first part is produced.

Continue Reading


Stamper performs subassembly superbly

May 21, 2015 | By Kate Bachman

DieMasters Inc. grew from a small diemaker shop to a 100-employee stamping contractor. The company added value to its bottom by making assemblies, which now comprise 70% of its revenue. The assemblies are a metaphoric representation of the company itself, which makes products diverse in every way possible—size, type, market, materials, complexity. While Diemasters’ success is the result of a concerted effort, President and CEO Virgil DeLay pulls the company together and keeps the band on cue with a well-defined production system.

Continue Reading


Large-bed servo press line enhances auto supplier’s efficiency

May 12, 2015 | By Kate Bachman

Automotive supplier of seating components Paul Craemer GmbH of Herzebrock-Clarholz, Germany, replaced two presses lines requiring press-to-press automation with one 35-foot tall, 48- by 25-ft. servo transfer press.

Continue Reading


Ask the Stamping Expert: Increasing progressive-stamping tooling life with the right lubricant

April 15, 2015 | By Thomas Vacca

I get a lot of questions regarding how to maximize the life of progressive-stamping tooling, but no one response fits all. We talk a lot about tooling materials, heat treatment, and coatings. But time and again, stamping lubrication is treated as relatively insignificant. Stampers put little...

Continue Reading


Ask the Stamping Expert: The continuing challenge of die maintenance

April 15, 2015 | By Thomas Vacca

Q: I have been trying to locate the die maintenance check list printed in a STAMPING Journal® article several years ago, which also included the 10 Tooling Laws. I am hoping you can lead me to it. A: You will find the check list at the end of this article. But even with a maintenance check...

Continue Reading


Ask the Stamping Expert: Determining stock width for stamping a part in a progressive die

April 14, 2015 | By Thomas Vacca

Q: How do I define the width of the metal stock required to stamp a part in a new progressive die? A: You need to consider a lot of factors when determining stock width for stamping a part in a progressive die. I assume your question on the stock width is so you can estimate the raw material...

Continue Reading


Ask the Stamping Expert: Fixing die shortcomings

April 14, 2015 | By Thomas Vacca

Q: We have a large stamping tool running in a 300-ton press. A changeover tool makes a left part and a right part, each of which is about 0.1 in. thick and shaped like a peanut. One-half of the part (lengthwise) is coined offset one material thickness in depth in addition to a number of other...

Continue Reading


5 ways to get the most out of your servo press

March 13, 2015 | By Shrinivas Patil

To make the best use of servo technology, you must have the best practices, best people in place with ongoing training and support. The first step in getting more out of the servo press is understanding your current processes and their pain points; know your press's capabilities; and understand the critical tolerances for the part--and how servo presses can help overcome limitations.

Continue Reading


R&D Update: Heat generation in forming of AHSS

March 10, 2015 | By Ali Fallahiarezoodar, Ruzgar Peker, Taylan Altan, Ph.D.

Advanced high-strength steel (AHSS) materials are multiphase steels that contain martensite, bainite, and/or retained austenite. The use of AHSS materials in the automotive industry is increasing every day, because these steels provide strength and satisfy functional requirements at reduced weight....

Continue Reading


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...

Continue Reading