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.
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.
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.
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.
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.
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.
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...
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.
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.
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.
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.
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.
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.
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.
December 12, 2006 | By Art Hedrick
This series of articles investigates the many causes of premature punch breakage in stamping operations.