Selected articles from December 2007 issue published on TheFabricator.com:
Of the many weld processes used, resistance, high frequency and fusion welding are the most likely to be integrated with roll forming. Welding processes that are integrated with roll forming include GTAW, fusion, plasma arc welding, laser welding, resistance welding, and high-frequency welding. The fusion weld processes most successfully integrated with rollforming are those that are fast and don't require a filler metal.
Hype Manufacturing invested in a horizontal machining center, two lathes, two vertical machining centers, a universal milling machine, tube bending equipment, a press brake, a laser cutting system, and a waterjet to support its racing effort.
Allright Tool Co. in Birmingham, Ala., increased its sales revenue by 79 percent only two years after buying its two waterjet cutting tables. The technology allowed the company to offer cutting services unmatched in the region and reduced its production time of parts dramatically.
In the world of shorter-run and engineered-to-order production, fabricators want to keep their machines at near or full capacity, which means the business is making money. To accomplish this, the flow of information coming out of the front office has to be fast enough to drive the shop floor automation.
Stampers today need to process more grades and types of material than ever before, yet are under relentless pressure to reduce costs. They increasingly rely on systems integrators and equipment suppliers to design and install versatile stamping lines with quick-change capabilities. A notable case was that of a truck frame and chassis components manufacturer. It worked with vendors to develop a line that processes material up to 0.280 in. thick and 72 in. wide, in a range of yield strengths, in three forms – coil, blanks, or sheet.
The new high-powered lasers allow fab shops to serve a broader range of custom needs.
The Wagner Cos. has staked out its position as the world's foremost producer of Festivus poles. Yes, it's the plain pole that Frank Costanza put up in his living room as a rebuke of Christmas' commercialism in a Seinfeld episode in 1997.
Detecting the presence of two sheets in a press feeding operation uses scientific principles, but the process is not an exact science. A typical press-feeding situation involves an air gap between the detector and the first sheet in the stack or an air gap between the top two sheets, and these air gaps reduce the detector's effectiveness. Understanding the capabilities of the detector and the limitations imposed by imperfect conditions can help stampers set up an effective double-sheet detector system.
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