Suitability of the Process

Not every construction is suitable for the application of the HiFIT process (Fig. 5). HiFIT improves the service life of professionally welded joints. Whereas HiFIT cannot remove production or quality deficiencies or operational stability problems caused by the weld root. Therefore prior to applying the process the task must be carefully examined and evaluated. Some examples are presented in the following figures.

Literature

• Weich, I. · Ummenhofer, T. · et. al.:
Influence of treatment and loading conditions on the fatigue strength of welds improved by high-frequency peening · IIW-Document XIII-2218-08 · International Institute of Welding 2008
• Telljohann, G. · Dannemeyer, S.:
HiFIT peening procedure for post-weld treatment of welded steel ­constructions · Stahlbau 77 · 2008
• Weich, I. · Ummenhofer, T.:
Post-weld treatment in practice · Stahlbau 77 · 2008
• Weich, I. · Telljohann, G. · Dannemeyer, S. · Ummenhofer, T.:
REFRESH-service-life extension of existing and of new welded steel ­constructions · DVS Congress · 2008