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Chinese steel targeted

September 14, 2007

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Everyone knew that the Aug. 1 collapse of the I-35W bridge in Minneapolis would spark plenty of scrutiny into the state of this country"s infrastructure and the construction methods used in these projects. But who knew that China would fall smack dab in the middle of the investigations? On...

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Rough waters on Wall St., smooth sailing on Main St.

September 12, 2007

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You don"t need me to tell you that the Wall Street roller coaster is moving a little too quickly and unpredictably lately. Any investor paying even the slightest amount of attention is feeling something between growing wariness and outright alarm. After breaking 14,000 in July, the...

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Aluminum Workshop: Minimizing weld cleaning stripes

September 11, 2007

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Q:I'm fabricating toolboxes for pickup trucks using gas metal arc welding (GMAW) and polished aluminum tread plate. The cleaning stripes along each side of the weld are wide and detract from the appearance of the toolbox. Please don't tell me to wire-brush the weld because this stands out even...

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Press maintenance program

Creating a pressroom preventive maintenance program

September 11, 2007

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A press maintenance program should be designed to minimize downtime, enhance machinery output, and establish a formal record keeping system for ongoing inspections.

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Stamping manufacturing

6 ways to focus on slitting lines

September 11, 2007

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By improving entry coil storage, coil inside diameter (ID) changes, slitter tooling changeover, scrap handling, and strip tensioning, you can slitting line efficiency.

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Arcadia Waterjet figure 1a

Fabrication in transition

September 11, 2007

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Arcadia, Albany, N.Y., transitions from a metal supplier to a waterjet cutting shop to a laser cutting shop to a metal bender. Future plans call for the shop to evolve into a full-scale contract manufacturer.

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Indianapolis Airport

Smooth landing for new airport terminal roof fabrication project

September 11, 2007

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The new Indianapolis International Airport terminal is one of the first airport buildings to be designed, fabricated, and built to survive the type of attack inflicted on the World Trade Center on Sept.11, 2001. The heart of the new terminal is designed to be a circular space—a civic plaza dominated by its great, arched roof. Fabricating the specialty sloping barrel joists, serpentine structural trusses, and torpedo columns for the curvilinear rolling roof presented unique challenges.

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Mazda Logo Sign

Structural adhesives form strong bond with signage

September 11, 2007

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Sign-makers have long sought a way to improve durability and aesthetics and reduce the labor-intensive steps associated with welding, taping, and fastening. Today's adhesives can structurally bond metals to plastics with unique design, production and costs benefits, thereby making them an alternative to welding and mechanical fasteners for sign industry fabrication.

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Roller Leveler

Leveling flat-rolled strip

September 11, 2007

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Operating a leveler requires training and skill, but computers are making the task much easier. A computer can quickly set the machine to a good starting point and allow very fine adjustment of the back-ups. Once the leveler is delivering good results on a particular coil, the settings can be saved and called up later. That saves setup time when coils are partially run and then sent back to stock.

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Shear zone geometry characteristics

Blanking developments

September 11, 2007

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Editor's Note: This is Part IIIof a three-part series on blanking developments. Part I, which appeared in the July issue, focused on fineblanking and tool design. Part II, which ran in the August issue, covered fineblanking part and process design guidelines.This column was prepared by Serhat Kaya,...

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Blanking developments - Part III

September 11, 2007

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During high-speed blanking, press stroking rate and punch speeds, are higher than in conventional blanking. As a result, the shear zone has a higher strain rate, which affects a workpiece's sheared surface temperature and the tool surface.

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Ridin' the storm out Part II

September 11, 2007

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Automotive Tier II supplier of ride control parts Tennessee Stampings makes extensive use of sensors to mistake-proof its stamping, and clear the way for its 23 percent annual growth. Before the dies ever hit the presses, they are properly sensored so you don't incur downtime associated with troubleshooting the sensor in the press.

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Employee loyalty—An elusive goal?

September 11, 2007

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Today's employees likely will work for several companies throughout their careers. This does not mean that retention efforts on your part are ineffective or a waste of resources. The right strategies can help you achieve the most from your valuable employees and possibly extend the time they work for you.

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Springback

Clearing the springback hurdle

September 11, 2007

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Springback is a fact of life for stampers, but knowing what causes it and how to deal with it— through stabilization, compensation, and verification—can help them overcome the problem.

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Got burrs?

September 11, 2007

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Using a machine to remove burrs from and put a surface finish on sheet metal and plate, also known as deburring and graining, is more complicated than it seems. The factors that go into selecting and setting up a deburring and graining machine are almost as numerous as the factors that cause burrs in the first place. Some of the important factors you have to consider are machine type (wet or dry), setup (the arrangement of sanding belts and deburring brushes), sanding drum hardness and diameter, brush type, and feed rate.

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