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Consumables Corner: Examining weld cracking, Part II—Stress, hydrogen cracking

July 16, 2014

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Editor’s Note: This is the second column in a two-part series. Q: I work in a midsized job shop, and we weld with the FCAW, GMAW, and SMAW processes. Occasionally we encounter weld cracking issues. What causes weld cracking, and what can I do to prevent it? A: Stress cracking is similar to hot...

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Consumables Corner: Examining weld cracking, Part I—Hot cracking

July 15, 2014

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Editor’s Note: This is the first article of a two-part series. Q: I work in a midsized job shop, and we weld with the FCAW, GMAW, and SMAW processes. Occasionally we encounter weld cracking issues. What causes weld cracking, and what can I do to prevent it? A: To ensure that the measures you...

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Customized lift truck provides safer, quicker unloading of tube, pipe, other long loads

July 10, 2014

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BSS Industrial, a plumbing and heating products distributor, was accustomed to using slings affixed to its fork lifts to lift tube bundles from truck beds. The drawback was that on occasion the load would swing, creating a tipping risk for the lift truck. Lift truck manufacturer Combilift developed a truck with standard-length forks for placing and picking inventory, and a longer set of forks for lifting tube bundles from the delivery vehicle’s bed.

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Hope dies last

July 9, 2014

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A hard-nosed welding instructor at a medium-security prison in rural North Carolina gives his students discipline, confidence, a foot in the door to a trade, and the possibility for a new life upon release.

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Bending Basics: The hows and whys of springback and springforward

July 9, 2014

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Why exactly does springback occur, and how can a technician predict it? Press brake guru Steve Benson covers the basic factors.

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Consumables Corner: Selecting the correct diameter for flux-cored wire

July 9, 2014

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I work in a large manufacturing fabrication shop where we weld subassemblies and then fit and weld them together to complete the machines we manufacture. Currently we use gas-shielded, flux-cored wires from 0.045 to 0.09375 in. in diameter. At what point is a small-diameter wire too inefficient,...

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Downsizing can be a killer

July 8, 2014

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All businesses of all sizes want to save money and be as lean as possible. However, if taken too far, some cost-cutting measures can have unwelcome consequences and cause a shop to go under.

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Consumables Corner: Combating overheating in work clamps

July 8, 2014

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Q: I weld in a large pressure vessel shop and use many welding processes, including SMAW, GMAW, FCAW, and SAW. Regardless of the process, our work clamps always get very hot. We’ve even had some arcing from the ground clamp. We have welded several grounds to the workpiece to remedy this problem,...

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Consumables Corner: Combating dull weld appearance with metal-cored stainless steel wire

July 7, 2014

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Q: We fabricate 401 stainless steel components and have considered using metal-cored stainless steel consumables. One of the issues with metal-cored consumables is the dull appearance of the weld compared to the appearance achieved with a solid wire. What can we do to maintain a clean or shiny...

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Stainless steel weld finishing by the numbers

July 7, 2014

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As the demand for stainless steel increases, welders and metal fabricators need to understand how to obtain the proper finish.

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Coating extends tool life x 3

July 7, 2014

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Like so many automotive suppliers, the GT Technologies stamping team encountered tooling challenges when it shifted its work material from cold-rolled steel to a tougher steel for certain components. Its tooling started wearing out in a third of the time, creating downtime havoc and production disruption. Switching to a different tool coating helped the manufacturer resolve its tool and die wear problems.

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Portable pipe cutting tool simplifies sawing process

July 7, 2014

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It's not often that a tool as simple as a hand-held circular saw wins an award for its design, but it happened when Exact Pipe Tools Inc. submitted three models to Design Zentrum Nordrhein Westfalen, one of the oldest design institutes in Europe. The saw clamps to the pipe, so users are safer and cuts are straighter.

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Consumables for high-amperage welding

July 7, 2014

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High-amperage welding, whether in semiautomatic or robotic applications, pust a great amount of stress on welding consumables. By following a few tips, however, a welder can extend the life of these components.

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Consumables Corner: Nixing porosity during weld start

July 3, 2014

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Q: I work for a job shop that fabricates and welds process piping for various applications. The pipes, made from A106-88a carbon steel and 304 and 316 stainless steel, are welded using GMAW, FCAW, and GTAW. We have been experiencing porosity, primarily on the weld starts. Our shielding gas is a...

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Consumables Corner: Welding heat treatable steels

July 2, 2014

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Q: Our shop won a contract that requires welding 4130 steel. I’ve been told this is a heat-treatable steel. Can you tell me which different welding procedures have to be used to weld this material? A: The most commonly welded heat-treatable steels are 4130, 4340, and 8630. However, any steel...

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