engleski

Reliability Improvements in Repair Welding of High-strength Steels

Engineers often have to deal with repair of weldments after they have been put into service. Here, the concern is that the service enviroment may have changed the structure, independent of wether the problems orginated during the initial construction (cold and hot cracks, inclusions, porosity, etc.) or during subseqent service (wear, damage, stress-corrosion cracking, etc.)In the case where the material characteristics have changed, the welding procedures used during the original construction may no longer be appropriate. Thus, it is necessary to create a new welding procedure qualification to define the specific details for an appropriate repair. In this paper, emphasis is given to repair welding of railway tanks manufactured from high-strength steels.

degradation; high-strength steels; reliability improvement; repair welding

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