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Phases, structures, and the influences of temperature

June 26, 2003

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When you heat or cool a piece of metal to a specific temperature, that metal goes through what's called a phase change, in which its crystal structure changes. Sometimes the change is obvious. For example, when a piece of metal melts, it goes through a phase change when the crystal structure breaks down and the metal goes from solid to liquid. When it solidifies it's also a phase change, as the structure re-forms from liquid to solid.

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Taking an integrated build approach to stamping tool tryout

June 26, 2003

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Market pressures to reduce tooling costs are pressing the tool and die industry to seek lower-cost tooling solutions. This column discusses different build approaches and the merits of an integrated build for trying out stamping dies (and molds) as part of the manufacturing validation process.

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The Bold in Arches

June 26, 2003

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The phrase "obstructed view" is probably most connected with older sports stadiums. For example, at Wrigley Field in Chicago, depending on where your seat is, watching Sammy Sosa in action in right field might be replaced by a view of a rusting steel girder.

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Tooling tricks of the trade

June 26, 2003

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Just make it work!" they scream. "I don't care how Just make it work!"As a tooling professional (whether you are a tool- and diemaker, engineer, press operator, or any other member of the team responsible for operating and maintaining that die), you quickly find that "making it work" is...

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Laser-integrated robotics for assembly

June 26, 2003

In recent years laser welding has advanced into many different industries, from automotive to electronics. With lasers, it is possible to weld at high speeds with great efficiency. Once unthinkable applications and processes are now being developed into working systems.

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Press brakes: the quest for a happy ending

June 26, 2003

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Screen some press brake owners and manufacturers these days, and it's like they're all reading from the same script:

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The little-known life of the scarfing tool

June 26, 2003

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Who cares about scarfing tools? There are more important things in life. When the beauty pageant contestant is asked what problem she would like to solve, she's more likely to answer "I'd like to establish world peace" than "I wish I could find ways to help scarfing tools last longer."

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Making hands-free straight, saddle, and miter cuts

June 26, 2003

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Rovanco Piping Systems Inc. designs and fabricates piping systems for applications such as water (hot and cold), steam, and jet fuel. It sells fabricated pipe—typically with straight or miter end cuts—up to 36 inches in diameter. It provides preinsulated, high-temperature, low-temperature, and containment systems.

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Waste not, want not

June 12, 2003

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Any manufacturing process that goes awry can result in waste in many forms, both obvious and hidden. A simple project in which tube is cut, bent, formed, and welded can result in large amounts of wasted money and time if one of the processes goes wrong.

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Understanding weld discontinuities

June 12, 2003

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A welder's primary concern in any kind of work is ensuring his weld is sound. For this reason, it's important for an inspector examining the weld to be able to spot a variety of weld discontinuities, including:Porosity.Incomplete fusion.Incomplete joint penetration.Unacceptable weld...

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Your best safety resource

June 12, 2003

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Do you know the Fabricators & Manufacturers Association, International™ (FMA)/CNA Safety Committee? If not, you should. They're an excellent resource for guidance on workplace safety issues. And they're the force behind the safety focus on thefabricator.com.

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The future of vocational education

June 12, 2003

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The death knell is sounding for vocational programs throughout the U.S. Readers who responded "Yes, vocational programs have been cut" to thefabricator.com's recent question regarding the status of vocational programs where they live outnumbered those responding "No, vocational programs are intact" three to one.

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Stretching metal's forming limits with HSP lubricants

June 12, 2003

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The trend in metal stamping is to use more and more aluminum and other lightweight materials, such as advanced high strength steel (AHSS). The need for technology to help improve metal flow of these materials in deep-drawing applications also is increasing. In many cases, a stamper's original...

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Designing high-strength steel stamped parts for formability

June 12, 2003

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The use of high-strength steel to manufacture automobiles and other transportation vehicles has increased dramatically. The material's strength allows manufacturers to reduce vehicle weight substantially and increase fuel efficiency, without sacrificing performance.

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Found art

June 12, 2003

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Watching the sparks fly as his dad welded a temperamental posthole digger mesmerized Derek Arnold. "I found the immediacy of something so permanent absolutely fascinating," he said. "I knew I wanted to weld."A hands-on welding education on the family farm drove Arnold to take his skills and creativity to the next level. In 1993 he graduated from the Maryland Institute College of Art in Baltimore. "I've been welding regularly since my freshman sculpture class," he said.

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