Stamping Articles

Whether you're using a high-speed stamping press to make simple parts at breakneck speeds or doing something really tricky, like deep drawing a material that puts up a lot of resistance, the information in this technology area is sure to help. The articles, case studies, and press releases cover stamping presses, lubricants, and materials.

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R&D Update: Predicting springback when bending AHSS and aluminum alloys, Part 1

December 5, 2016 | By Aanandita Katre, Ali Fallahiarezoodar, Taylan Altan, Ph.D.

Editor’s Note: Part II of this article, which will appear in the January/February 2017 issue, will discuss the results and case studies of the newly introduced inverse analysis method for improving springback prediction. In the automotive industry, the use of advanced high-strength steels (AHSS)...

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Die Science: Estimating die cost

December 2, 2016 | By Art Hedrick

Before receiving a contract to design and build a die, the building shop must quote a price to the customer. Because every die usually is a one-of-a-kind tool, the process of quoting tooling cost is not always easy. The person estimating this cost must have a good understanding of sheet metal...

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Ask the Stamping Expert: The continuous improvement approach to die design

December 2, 2016 | By Thomas Vacca

The “10 Die Design Laws,” which appeared in the September/October 2016 issue, are most effective when used along with a continuous improvement approach. At the end of every tool build and final development cycle, the die design team should review what went well and build on those strengths, but...

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57-year veteran tool- and diemaker “started somewhere”

November 18, 2016 | By Kate Bachman

Of all of the roles 57-year veteran tool- and diemaker Paul Rettberg has had, the one he has enjoyed the most is the one he fills currently … as a teacher.

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6 Q&A about compact in-die transfer tooling

November 18, 2016 | By Bob Gunst

Compact in-die transfer tooling technology brings the flexibility of a press-mounted transfer system to small-press and small-part applications. The small transfer system mounts directly to the stamping die, becoming part of the die. The in-die transfer tool is set up and run in continuous mode, just like a progressive die.

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Xtreme MRO keeps heavyweight stamper on track (video enhanced)

November 18, 2016 | By Kate Bachman

If an ounce of prevention equals a pound of cure, what is it worth when you’re stamping thousands of tons? To Rockford Toolcraft, it’s priceless. The $100 million annual sales stamping manufacturer specializes in stamping heavy-gauge material up to ¾ inch thick. Its maintenance, repair, overhaul program must be topnotch to keep operations moving. The millwrights and electricians who maintain, repair, and overhaul the 60 massive, high-tonnage mechanical presses are highly skilled, very experienced, and ready at a moment’s notice to get the presses back on track ASAP. Here’s how the company keeps its fleet of presses humming.

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Using strengths and experiences to boost profitability

November 14, 2016 | By Bill Frahm

Metal formers are more than just suppliers of stamped parts. They understand how material reacts during the forming process and how downstream processes can be set up to handle stamped parts efficiently. This is valuable knowledge and should be shared with customers to solidify relationships and possibly boost revenue opportunities.

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Metal spinning versus flow forming

October 27, 2016 | By Dirk Palten, Josep Mont

Metal spinning and flow forming are similar processes. In some respects, flow forming can be considered a specialized kind of metal spinning. But the two processes are different, and each is designed to meet different application requirements.

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Stretch flanging and hole expansion with AHSS

October 25, 2016 | By Daniel J. Schaeffler

New, stronger steels have forced metal formers to rethink what they have always done in the pressroom. Traditional rules are no longer applicable across the board. The case of punching holes in these new steel alloys is a good example.

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R&D Update: Evaluating lubricant using the cup drawing test

October 10, 2016

Lubrication plays an important role in sheet metal forming by affecting metal flow and reducing the possibility of fracture during forming. A number of tests are used to evaluate lubricant performance, including the strip draw test, the twist compression test, and the cup drawing test.The cup...

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Die Science: The basics of troubleshooting die problems

October 10, 2016 | By Art Hedrick

In my career as a consultant, I have experienced numerous die-related problems. Some were complex, and some were easy to solve. But most were solved by following basic die design and troubleshooting guidelines. For a stamping die to function properly, you have to follow three basic die design...

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Ask the Stamping Expert: The 10 laws of die design

October 10, 2016 | By Thomas Vacca

Q: Can you provide me with some guidelines for die design? A: When it comes to die design, I find there are two best practices to live by: Follow Tom Vacca’s 10 Die Design Laws. Use a die design continuous improvement check list. Following are my 10 Die Design Laws. Look to the...

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How 2016 Car of the Year Honda Civic maneuvered around AHSS obstructions

October 4, 2016

Honda used Gestamp’s in-die “softzone” hot stamping process to form strategic zones of the 2016 Civic sedan’s rear frame rails to 1,500-megapascal (MPa) (shown in red), while cooling other zones (shown in pink), at a different pace to render them to a lower tensile strength to satisfy crush mode and performance targets.

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Servo press trends

September 21, 2016 | By Kate Bachman

Vehicular weight reductions that automakers have made largely have been attributed to the use of advanced high-strength (AHS) materials—and the stamping manufacturers forming them. Stampers have muscled the Olympian feat via many approaches, including using servo-driven mechanical presses. Servo presses have evolved and moved from the fringe into the mainstream. Four servo press manufacturers weigh in on how servo press technology has advanced to spot stampers in helping them meet the challenges inherent in forming superstrong metals with low formability and high work hardening.

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How to gild your safety record

July 13, 2016

Talan Products has consistently reduced its safety incident rate since 2006. That it has manufactured for 1,600 days without a lost-time accident is no accident. It is the result of a deliberate development of an omnipresent safety culture. Other manufacturers often ask, “How do you do it?” The manufacturer shares its safety secrets, including establishing a safety culture, learning from near-misses, using sensors, and tracking safety metrics.

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