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Arc Welding 101: Three keys to a successful CWI

September 26, 2014

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Q: I was recently interviewed by a writer who was researching how welders make the transition to certified welding inspectors (CWI). One of the questions he asked was, “What key skills make for the best certified welding inspector?” A: Communication—written, photographed, or verbal—is the...

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Consumables Corner: Selecting filler metals for stainless steel welding

September 23, 2014

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Q: We're a midsize job shop that manufactures a wide variety of products from various types of metal. Currently we have a project that requires welding 304L to 316L stainless steel and welding both of these alloys to A572 Grade 50 steel. Some of the welds are structural and some are used in...

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Arc Welding 101: Globular-transfer mode for MIG

September 23, 2014

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Q: I am employed as an AWS D.1.1-qualified welder at a machine shop. I was wondering why you can certify on 75 percent argon/25 percent CO2 when you are not allowed to use a short-circuit transfer on materials over 3/16 in. You need at least 83 percent argon to obtain a spray transfer, yet I passed...

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Choosing the right aluminum filler alloy

September 22, 2014

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How do you know which aluminum filler alloy to use? With several varieties out there, it’s important to be familiar with the type of application and the type of results you are looking for. Those and other considerations will lead you to choosing the right alloy.

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Want to take up powder coating?

September 15, 2014

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As more metal fabricators look to increase value-added activities, they are considering adding a powder coating line. Before they do that, however, they need to know what's involved. They need to select a system that fits a specific footprint, can deliver the customers’ surface appearance and corrosion protection requirements, and meets budget constraints. In other words, they really need to do their homework.

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Weld Cleanup Poses Challenges for Oilfield Workers

September 15, 2014

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Attention to proper weld cleaning is especially critical in field applications.

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Metal-cored wires: Your questions answered

September 8, 2014

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When does switching to metal-cored wires make sense? Answers to the most commonly asked questions about this consumable can help you decide if it’s right for your operation.

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Aerospace parts manufacturer upgrades bending capability

September 8, 2014

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Bending tubular parts for the aerospace industry isn’t easy. OEMs continue to push the envelope, designing increasingly complex parts made from pricey materials. Fabricators are under continuous pressure to improve their capabilities, turn orders around faster, and minimize scrap. To that end, SL Engineering recently invested in a second all-electric bender from Unison.

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Selecting the right waterjet abrasive

September 8, 2014

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Almost every natural and synthetic material has been tried as a waterjet cutting abrasive. The best material appears to be almandine garnet. However, it's the right combination of hardness, density, toughness, and particle shape in the garnet that maximizes a waterjet's cutting capabilities.

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Custom bicycle manufacturer fabricates titanium, ferrous materials, aluminum to thrive in competitive market

September 4, 2014

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Firefly Bicycles, a 2011 start-up in the custom bicycle business, is thriving despite the sluggish economy and a competitive marketplace. The company’s three founders are using their previous work experience in bicycle fabrication and their enthusiasm for cycling to stay ahead of the competition.

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A new dimension in CAD models

September 4, 2014

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AGCO engineers don’t have to rely solely on the traditional product development process any longer. They have implemented a new virtual reality system that enables engineers to correct design flaws without having to build multiple prototypes. Now the tool is being used to build the company’s first generation of global agricultural equipment.

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Shop technology and 3-D CAD: Creating animations to explain the invention

September 3, 2014

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Columnist Gerald Davis walks the reader through the steps needed to create a 3-D CAD movie that can be used to bring an assembly or product idea to life.

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Two-coat powder process fights corrosion

September 3, 2014

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A powder-on-powder process developed by Hartford Finishing in Wisconsin is providing customers with corrosion protection that they weren't getting with e-coat or other powder finishes.

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TPJ celebrates 25 years

September 3, 2014

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Editor Eric Lundin recounts some of the more interesting articles published in TPJ since it was founded in 1990, discusses some of the trends, and provides some input from early members of TPA’s board of directors.

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The miraculous effect of spare capacity

August 29, 2014

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The traditional cost-based approach to manufacturing promotes using your resources—people and machines—to the fullest extent, but this can wreak havoc in high-product-mix manufacturing, especially in contract operations with varying and unpredictable levels of demand. This is where the value of spare capacity comes into play.

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