Euroweld supplies a Certified Material Test Report (Actual CMTR) with ALL consumables. In most cases, consumables can be supplied to dual or multiple certifications including AWS, ASME, Controls, DIN, DNV, EN, TUV or ISO Certifications.
Over the last decade, Euroweld has learned that wire processing is critical to success and defect free welding, especially where orbital GTAW is used. Manual GTAW typically can tolerate more contaminants because the weld pool is somewhat more turbulent and assists the evolution of gases. It has been demonstrated that “white glove clean” may not actually be clean. Using this approach, only the surface is examined. It is what is under the surface or trapped in the surface irregularities that need to be evaluated. Traditional pickling operations do not offer satisfactory cleaning. In many cases, actual material must be removed during the manufacturing process to ensure that contaminants have been reduced to the lowest possible levels. These extra measures plus the resulting loss of material add to the costs. But, additional weld metal costs are significantly less than weld repairs.
These figures illustrate the types of indications that can result from using “standard” wires in orbital GTAW welds. Many appear small while some can get quite large. It is very common to experience rejectable porosity, both visually and by radiography. This is especially true when ultrasonic testing is used. The dots seem to be connected and show up as a rejectable linear indication. This is even more apparent where PHASED-ARRAY ultrasonic testing methods are employed.