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What is Microbiologically Influenced Corrosion (MIC) and why do contractors need to know anything about it? Well, it turns out that MIC can negatively affect your profits.

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On occasion we get questions from our members who would like to use backing flux in lieu of purging when making welds on stainless steel or other corrosion resistant materials. This bulletin describes an experiment conducted by NCPWB Consultant Walter Sperko where he had a colleague make stainless steel butt welds without any protection of the root of the weld, with inert gas backing, with backing flux and with flux-coated wire.

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When reviewing a Welding Procedure Specification (WPS) or a welder qualification record, the term "backing" frequently appears. In some cases, backing is required, while in others, it is optional. Backing can take various forms, including metal, non-fusing metal, nonmetallic materials, or even weld metal. But what exactly is "backing," and why is it important in welding?

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The E6010 electrode is a wire encased in cellulose held together with salts and minerals. These electrodes penetrate better than low-hydrogen electrodes like E7018 when making root passes, making it easier to make a good root pass. However, E6010 introduces hydrogen into the weld creating a risk of cracking, and this article shows when its use should be limited.

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The 2024 Beacon Economics Market Report delivers up-to-the-minute insights and data-driven analysis tailored for mechanical service contractors. Uncover updated key trends for 2024, including market shifts and economic forecasts that directly impact your business. This study is an invaluable resource for looking at market trends that will help guide strategic decisions and keep you competitive. Don’t miss out on this powerful tool—download the new report today!

Description:

Piping codes are standard industry practice, and failure to agree on the one that applies to your work can result in ugly disputes with customers. Customer specifications can have inspection requirements that can result in repairs to welds that you did not plan for. Welders can make welds that put your business at risk. This article highlights what you can do to avoid these risks.