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Taking high heat and spatter out of nonpulsed GMAW

January 26, 2016

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Waste reduction in manufacturing helped to make Japanese manufacturing a mighty power, and that push for process improvement continues today. It was a big motivator for OTC DAIHEN to develop its Controlled Bridge Transfer-Expanded technology for robotic GMAW applications.

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At WITS end with wrinkles, tears, springback in AHSS?

January 26, 2016

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: Stamping AHSS comes with forming challenges such as wrinkling, tearing, and springback. A servo’s controlled force can help resolve some of those problems—and keep you from tearing your hair out.

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2015 updates for ISO 9001, 14001 align with other standards

January 26, 2016

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In September 2015, the widely recognized global standards body International Organization for Standardization (ISO) released its 9001:2015 standards for quality management systems (QMS) and 14001:2015 environmental management systems (EMS). Key changes to both the ISO 9001 and ISO 14001 standards are that they are structured to align with other standards bodies; are less prescriptive; require greater upper management involvement; and require less documentation but more emphasis on defining processes, risk and opportunities planning, and context.

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FABTECH flashback

January 21, 2016

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With the boisterous holidays and end-of-the-year cinematic wave behind us and a long stretch of quiet winter still ahead, you could not be faulted for pining for the fun, clamor, and intrigue of FABTECH® 2015 only a few short months ago. “Star Wars” has nothing on the special effects, precise automation, heavy metal, whirring bots, and heart-pounding thrills there. Here is a flashback.

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Troubleshooting sheet metal defects: Part I

January 20, 2016

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Before a manufacturer can figure out what’s wrong with metal that keeps splitting during a forming process, it needs to understand just why one batch of sheet metal differs from another. The first step is learning the lingo associated with metal creation.

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Sound waves determine weld soundness

January 19, 2016

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Traditional ultrasonic systems use piezoelectric transducers to generate sounds waves and a couplant—a liquid—to provide a pathway for the sound waves to pass from the transducer to the material under test. An electromagnetic acoustic transducer is an alternative technology, one that uses two electromagnets to generate the sound wave in the part to be inspected. This eliminates the couplant, which can interfere with the test process.

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The tipping point: A new way to manage value streams in high-mix manufacturing

January 19, 2016

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Lean consultant Gary Conner describes a way to adapt value stream mapping—with its roots in low-mix, high-volume production—to the high-mix, low-volume job shop.

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How to set up your press, tooling, workpiece for press-to-press robotic transfers

January 19, 2016

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Setting up for robotic press-to-press transfer systems requires some consideration of distances, bolster height, and stroke length, as well as feed length, die clearance and several other press, tooling and workpiece considerations.

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Metallurgy Matters: Thermal cycles, the HAZ, and the strength of martensite

January 18, 2016

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Last time we looked at how welding heat influences the heat-affected zone (HAZ) of metals strengthened by three typical hardening processes: solid-solution hardening, cold working, and precipitation hardening. That leaves one critical strengthening process to consider: transformation (martensite)...

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Acoustic mapping finds defects on tube, pipe ID

January 14, 2016

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Acoustic microimaging has long been used to find inclusions and voids between two bonded tubes or pipes. A new application for this technology precisely measures the wall thickness along the entire length of a tube or pipe.

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Ask the Stamping Expert: Should light curtains stop a press even if it is traveling up?

January 8, 2016

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Q: We have some manual presses set up in a single part load-and-stamp production mode. The press is equipped with light curtains. When the operator activates the press buttons, he has to wait until the tool runs through the entire press cycle before he can reach into the work area. If he tries to...

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R&D Update: Lightweighting in the automotive industry using sheet metal forming, Part 1

January 7, 2016

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The Ohio State University's Center for Precision Forming provides an overview of design considerations and materials used in lightweighting in the automotive industry in the first part of a two-part series.

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Welder training: The fundamentals, Part I

January 7, 2016

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Although welder training has advanced over the years, the fundamentals remain essentially the same. What should beginning welders be taught first?

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Die Science: How to destroy a die in 7 easy steps (or, how to work every Sunday)

January 7, 2016

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Art Hedrick applies humor to a not-so-funny problem.

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Die Science: How to destroy a press

January 6, 2016

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It’s amazing how many stampers and tool and die shops negate the importance of the press. Shops often “maintain” a press when it stops working. In other words, they repair the press, but they don’t maintain it regularly. I could have just as easily named this article “How to select...

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