Elia Levi

Contributing Writer
Submerged Arc Welding

Submerged arc welding optimization

November 10, 2009

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Suitable for welding various materials and plate thicknesses, submerged arc welding is considered an economical, efficient process. Yet, in the search for fine tuning this process, obvious solutions have been ignored in favor of exotic and expensive welding heads and power sources. Applying sound expertise and creative insight can lead to less costly solutions.

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Fabricating

Validating processes, procedures, and products

June 23, 2009

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The relatively new concept of validation likely will be used more and more by customers and certifying agencies to ascertain that all conceivable means were used to guarantee that a manufactured product indeed meets all requirements, including hidden characteristics not readily verifiable. This article gives an overview of typical applications.

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Where is the welding management?

May 27, 2008

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Skilled, responsible welders can be expected to perform tasks to which they are accustomed very well. But when a brand-new project comes in, management should be careful not to give welders responsibilities they are not prepared to take. They need more than encouragement and sympathy.

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Salvaging damaged shafts

January 15, 2008

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Shafts are critical components of many machines, and a damaged shaft can hamper or halt production. Some failed shafts can be repaired and others can't. This article can help you determine which can be repaired and what to consider when attempting repairs.

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Planning a career in welding: A young person's guide

July 10, 2007

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Welding can be a rewarding career. To be successful and satisfied in welding or any career requires planning, preparation, and pursuing a job you love. This article provides an overview of welding as a career, describes different opportunities, and lists resources that can help you to become a welder.

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Joining incompatible materials

April 10, 2007

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Certain metal combinations cannot be joined successfully with fusion welding. Deciding how to join them requires examining options, including potential material substitutions and process possibilities. This article discusses these options and offers a blueprint for the best solution.

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Promising welding innovations

November 7, 2006

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Translating any good idea into a practical innovation through research and development can require much persistence, dedicated effort, essential investment, and a long time. This article looks at three welding and joining innovations—hybrid laser arc welding, electron beam welding in air, and NanoFoil® joining—with decades-old roots that still are struggling for widespread acceptance.

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Arc welding discontinuities

July 11, 2006

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Welding discontinuities can affect product performance and longevity. Thoroughly understanding the various defects, their causes, severity, and remedies can help ensure high-quality and superior performance. This article presents an overview of welding defects and discusses design strategies to help prevent them.

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How to perform tack welding successfully

April 11, 2006

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Tack welding, a necessary preliminary step in many welding projects, must be performed correctly to achieve optimal results from the final weld and to minimize part defects. Quality is as important in tack welding as it is in the final weld. This article describes proper tack welding conditions.

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Reverse engineering

November 8, 2005

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Typically, the idea for a fabricated product evolves into a manufacturing project from a complete set of engineering documents that define the product's scope, function, and limits and express its requirements. However, occasionally the necessary supporting documentation is unavailable and must be reconstructed.

For example, you might want to study an old sunken Roman or Viking vessel to gather information on ancient materials and technology and to understand a past civilization.

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Fatigue Failures

June 14, 2005

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Fatigue causes the majority of mechanical element failures in structures and machinery. It is important to understand the causes of the failure and how to prevent or repair it.

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Incorporating beveling economically

April 11, 2005

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While beveling is known as a common procedure used to shape the edges of thick plates or pipes for welding, not everybody knows how to make the process cost-efficient in the overall welding operation.

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Design for welding: Letter to an engineer

March 8, 2005

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Drawing Guide Notes courtesy of www.roymech.co.uk, a U.K.-based Web site. Editors Note: The image is presented solely for the purpose of illustrating typicaldrawing notes.My Dear Design Engineer,I sometimes am baffled by the way some of your colleagues deal with projects that require welding...

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Weld repair—Analyze the failure before attempting the repair

November 9, 2004

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When something breaks, you acknowledge the shock, scratch your head, take stock of the situation, and look for the fastest way to repair the item and put it back into operation. The pressure to repair quickly is understandable, but common sense suggests stopping for a moment and trying to understand what caused the break before attempting the repair.

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