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Home / Experts / Dr. Michael Fletcher

Dr. Michael Fletcher

Dr. Michael Fletcher is CEO of Delta Consultants and an independent consultant for Huntingdon Fusion Techniques HFT, huntingdonfusion.com. Email barrow@post.com

Articles by Dr. Michael Fletcher

Welding New Nickel Alloy

Inconel 740H and other new superalloys provide major improvements in mechanical properties and corrosion resistance at elevated temperatures, but they still need careful purging during welding in order to preserve these characteristics.

Seven Tips for Inert Gas Weld Purging of Pipes

Effective weld purging can only be achieved by making sure that any residual oxygen is displaced from the purge zone prior to and during welding to prevent significant loss of corrosion resistance and a reduction in joint strength. Here are some insights on how to properly conduct and monitor this process to ensure compliance.

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