Tag Archives: martensite

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The Importance of the Heat Affected Zone (HAZ)

When we weld we generate enough heat in the welding arc to melt the filler metal and base material.  Or just the base material is we are welding autogenously (as in GTAW without filler).  The edges of the base material melt and combine with the filler metal to create what is called the composite zone.  […]

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Dangers of not Maintaining Proper Interpass Temperature

Last week we had the pleasure of working with a fabricator of pressure vessels in order to help them reduce manufacturing costs.   As mandated by the ASME Boiler and Pressure Vessel Code this fabricator had welding procedure specifications (WPSs) and procedure qualification records (PQRs) in place.  These were properly written, tested and documented. The WPS […]