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Tool steel damage

Die Science: Tips for grinding and wire machining tool steel

March 13, 2007 | By Art Hedrick

How tool steel is machined can make a big difference in its performance and life. A poor grinding job might look good, but unseen stress can cause premature failure.With the correct grinding and wire burning techniques, tool steel results can be optimized.

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Blanking line controller

Automotive blanker presses on

March 13, 2007 | By Dan Davis

Amidst the bad news associated with Ford Motor Co., good news is surfacing in Jeffersonville, Ind., home of Kasle Metal Processing. The company is using a software tool to ensure it is operating as efficiently as possible as it heads into one of its busiest months ever.

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Vertical dereeler

The big payoff

February 19, 2007 | By Tim Malarky

Traditional coil slinging and hoisting for vertical dereelers and positioning them in coil cradles requires extra personnel and is time consuming because production must be stopped. When a line isn't running—it's not making any money. To keep your line moving, consider a pallet uncoiler.

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Draw Forming, Part VII

February 13, 2007 | By Edmund Herman

Setting the processing variables is different between the net shape and non-net shape processes. While non-net shape variables have to be programmed constantly to change the tool's position in space to follow the unique shape of the part being made, the shape of the part for the draw forming net shape process is built into the die.

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Roller lubrication system

Cleaning up

February 13, 2007

Excessive fluid on finished parts, which required secondary cleaning operations, and additional cleaning of floors, aisles, and racks in the areas where parts were moved and stored were remedied by installing a roller system with a programmable controller.

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Die protection

Protecting metal stamping dies

February 13, 2007 | By Karen Keller

One of the most difficult problems to overcome in any die protection application is protecting the components from the environment in which they must function. In a typical stamping application, oils, coolants, and other liquids and lubricants often are present that can wreak havoc on components.

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spring pins

Die Basics 101: Part XII

February 13, 2007 | By Art Hedrick

Slug pulling, which occurs when scrap metal—the slug—sticks to the punch face upon withdrawal and comes out of the button, or lower matrix, is a serious problem that can damage parts and dies. Various methods can help reduce the occurrence of slug pulling. Air Vents Putting air vents in...

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R&D Update: Hot-stamping boron-alloyed steels for automotive parts - Part III

February 13, 2007 | By Taylan Altan, Ph.D.

To accurately model the hot-stamping process, FE simulation needs to account for the mechanical, thermal, and microstructural changes in the workpiece.

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R&D Update: Hot-stamping boron-alloyed steels for automotive parts - Part I

February 13, 2007 | By Taylan Altan, Ph.D.

Hot-stamped parts are being used increasingly in cars in Europe and North America. Ultrahigh-strength steels, like boron alloys, which meet automotive safety and crash requirements, are difficut to form with cold stamping, so hot stamping with die quenching has been applied.

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R&D Update: Hot-stamping boron-alloyed steels for automotive parts - Part II

January 18, 2007 | By Taylan Altan, Ph.D.

Compared with cold-formed parts, hot-stamped parts provide better formability at high temperatures and exhibit no springback on the final part.

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Sheet metal resistance

Draw forming, Part VI

January 9, 2007 | By Edmund Herman

Energy input at one location in a part during forming is redistributed throughout the part as the forming process advances. The result must be an adequate force transmitted back to the location of target strains and displacements.

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Die handling tools

Choosing the right die handling tools

January 9, 2007 | By Michael Schollmeier

Many stampers rely on the machines and equipment you already have for moving and changing stamping dies. Using dedicated items such as die carts and shuttle tables can make die change more efficient.

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Cutting shear

Die Science: Solving punch breakage problems - Part II

January 9, 2007 | By Art Hedrick

Cutting shear, or the angle ground into the end of a punch, has a big effect on punch deflection and breakage, as well as press tonnage required. Retainers, which hold the punch to the die shoe, also are important. The backing plates, ball lock punch retainers, and headed styles of punches and retainers all require careful consideration.

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Stainless steel stampings

Viking's range of choices

December 12, 2006 | By Kathleen McLaughlin

The stainless steel stampings Viking Range produces often require complex draws and piercing, as well as sharp corners and creases—with flawless exterior finishes. Viking has moved from outsourcing its stampings to using press brakes to investing in hydraulic presses of increasing capacity and sophistication—all in an effort to gain greater control over the design, quality, and availability of stamped parts.

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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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