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Achieving faster, more efficient tube mill changeovers

July 26, 2001

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Tube mill changeovers involved more than just tooling. Fast changeovers require control over many variables (entry equipment, side pass stands, and so on). Above all, two factors are critical in fast, consistent setups: regular maintenance of the mill and tooling, and reliance on written procedures.

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Magnetic pulse welding for tubular applications: Discovering new technology for welding conductive materials

July 26, 2001

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A review of how magnetic pulse welding works, in what applications it can be used, and what considerations users must take to perform it properly.

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Examining the GTAW environment

July 12, 2001

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The author outlines basic components of a welding booth suitable for GTAW, and offers possible solutions to a decline in availability of the thoriated tungsten used in a GTAW electrode. He also offers ideas for providing a clean air supply for the GTAW operator.

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Examining press feeding options: Considerations that determine a feed's effectiveness

July 12, 2001

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Press- and servo-driven roll feeds and gripper feeds are almost as common to the stamping industry as sheet metal and dies. Knowing how to use them effectively may not be so common.

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Steel industry anything but status quo: Next generation of distributors set to lead wave of change

July 12, 2001

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As the market demands change, the steel distribution industry will take up the gauntlet and change with the times. Contrary to some speculation, the steel manufacturing industry is neither going away nor reluctant to embrace the innovations necessary to survive.

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Proper guarding protects workers: Six steps to focusing on your employees' needs

July 12, 2001

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When people think of machine guarding, usually they think of devices to protect people from the moving parts on machinery.

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The growing use of orbital tube welding

July 12, 2001

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Although orbital tube welding has been used in aerospace, semiconductor, and other high-purity applications for a long time, general industrial markets just now are beginning to view it as a viable and economical option for joining stainless steel tubing.

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Hydroforming on a budget

July 12, 2001

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You can use several strategies for starting a hydroforming operation on a limited budget. Review your alternatives for selecting a press, fluid intensification system, and developing the tooling necessary for your operation before you take the plunge.

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Turning up the power

July 12, 2001

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The most common power levels ranged between 1,500 and 2,000 watts. However, a statistical survey conducted by the AMT Laser System Product Group indicates a steady increase during the last 12 months of installations for high-power 3,000- to 4,000-watt laser systems and a decline in sales of lasers with power levels less than 2,000 watts.

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Listening to the loud messages Editor's Picks -- Work Force Development Web Sites

July 12, 2001

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One of the loudest messages of the day was that managers, presidents, and owners need to ask the employees actually doing the work for their suggestions on how things should be done. And then listen.

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Laser welding of stainless pressure tubes

July 12, 2001

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Not all laser welded tubes are created equal. Know what to look for in the final product to ensure that you're buying quality and not just an imposter.

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How to Kill a Robotic Project in Five Easy Steps

July 12, 2001

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How would you like to fail utterly in your quest to modernize your shop with robotic weldingequipment? Look no further—we've got all the bad advice you need right here.

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Automated welding for job shops

July 12, 2001

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A robotic weldingsystem represents a significant capital investment for a job shop.

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Experimenting with flexible blank holder force control: Prototype shows promise for difficult-to-form materials

July 12, 2001

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The quality of deep drawn sheet metal products is determined largely by the rate at which a sheet is drawn into a die. Varying blank holder force (BHF) as a function of time or the press stroke is of great importance.

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Plasma cutting stainless steel and aluminum

July 12, 2001

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This study conducted at Hypertherm characterizes thermal and chemical changes in plasma-cut stainless steel and aluminum alloys and recommends process alternatives that may improve aesthetics and cut quality to improve forming and fabricating of the materials. The systems used were water-injection PAC, conventional dual-gas PAC, and high-precision PAC. It was learned that the heat-affected zone (HAZ) is small in plasma-cut pieces, HAZ varies with speed and power, faster cutting produces less HAZ, and more heat per square inch can produce less HAZ.

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