Content tagged with "coils"
Results: 18
Article
July 2, 2009
The pressure is on
The 400-ton pressure testing setup shows the die components and bumper blocks. The traditional method of measuring pressure distribution in stamping operations—the die spotting blue technique—indicates the pressure points but not how much pressure. This makes it difficult to... Read more...
Article
February 24, 2009
Stamper rebuffs recession with retool
Eagle Wings Industries, Rantoul, Ill., is a Tier 1 and Tier 2 supplier of large underbody assemblies and subassemblies. The company forms chassis parts (front and rear side members, floor reinforcements, I/P assemblies, side pillars, and strut houses); painted trim parts (front suspension... Read more...
Article
December 11, 2007
Article
October 9, 2007
For flawless cosmetic finish, start at the head
To remain competitive and profitable in the face of rising energy and material costs and low-cost overseas labor, North American stampers are offsetting these higher costs by increasing pressroom efficiency. Stampers are investing in automation to reduce labor costs and to expand the use of... Read more...
Article
April 10, 2007
A guide to fabric slitting line tension rolls
The composition and construction of a roll, its fabric, and how it is finished are critical in understanding how a roll works. Knowing how a roll works, in turn, is the key to optimizing its performance and longevity. A nonwoven fabric is a combination of natural or synthetic fibers and... Read more...
Article
March 13, 2007
Roller leveling 101
Editor's Note: This article is adapted from Brownie Cox's conference presented at FABTECH® International & AWS Welding Show, Oct. 31-Nov. 2, Atlanta,© 2006 by the Fabricators & Manufacturers Association Intl. (FMA), the Society of Manufacturing Engineers (SME), and the American... Read more...
Article
September 12, 2006
Holding the line on metal costs
Minimizing coil processing scrap maximizes yield. Nearly everyone who processes metal—aluminum, carbon, or stainless steel—is concerned about scrap loss. Scrap loss in coil processing operations, such as slitting, cut-to-length, and stamping, often is overlooked. Finding... Read more...
Article
September 12, 2006
Doing its level best
More than ever manufacturers depend on high-quality blanked and stamped parts to reduce production costs, speed up assembly time, and eliminate secondary processing requirements. The automotive market in particular is focused on consistently achieving uniform and accurately dimensioned... Read more...
Article
August 8, 2006
Feed to registration
Figure 1 In the mid-1980s service centers attempted to create coils slit in a scroll pattern to reduce scrap. When processing round or nested parts, most stampers use one of these three methods with varying degrees of scrap rates: Conventional coil stock feeding into a one-out... Read more...
Article
June 13, 2006
Envelope, please!
Do you remember this photo that originally appeared in the January/February issue of TPJ on page 10? I asked readers to send me short, glib captions for the photo and promised to publish them in a future issue. Well, the time has come. But first, let's digress. You might recall that the... Read more...
Article
April 11, 2006
Eliminating problems that cause flaws
Editor's Note: This is the second article in a two-part series on eliminating tube or pipe flaws. Part I discussed the steps needed to eliminate variables introduced by the tube or pipe mill. Part II discusses material variations that result in flaws in the finished product. Before getting... Read more...
Article
March 7, 2006
How to avoid slit-in coil slitting problems
Good coil slitting tooling and practices result in good edge quality.
Many problems can arise during metal slitting. These include poor edge quality, edge burr, edge wave, camber, crossbow, knife marks, and slit width that is out of specification.
When slitting... Read more...
Article
February 7, 2006
Understanding press feeds
A press feed must not only move the proper amount of material into the tool, it must position it correctly into the die—front to back, side to side, and square with the tool. In this case, it must also gently handle prepainted coil to prevent scratching it. Over the last decade... Read more...
Article
February 7, 2006
Maintaining a slitting line
Modern slitting lines are high-performance machines that run at speeds up to 2,000 feet per minute and are intended to produce 24 hours a day, 365 days a year. For these reasons, coil processors must be sure all line elements are properly maintained, which represents a titanic effort if... Read more...
Article
January 10, 2006
Happy New Year!
This sample was cut from a section of welded 16-in.-OD pipe. The interesting pattern was created when a socket head cap screw got rolled into the strip at the steel mill. Photo provided by William C. Tungate, department manager, 16-inch mill, Newport Steel, Newport, Ky. Well, we've... Read more...
Article
December 13, 2005
Coil feed line considerations when stamping HSS
High-strength steel (HSS) rapidly is becoming a popular material for the automotive industry. Why? With its higher tensile and yield strengths, HSS is stronger at all gauges than conventional mild steels. Initially light-gauge HSS was used to replace heavy-gauge mild steel to reduce... Read more...
Article
August 28, 2003
Article
June 6, 2001
Protecting surface-sensitive materials in coil processing
In today's world of metal fabricating, reducing the number of steps in the production process is an ever-increasing trend. Fabricators are becoming more efficient by: Feeding production lines with materials that have been slit to the proper finished dimension. Feeding production lines with... Read more...
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