Repairing of an engine block through the cold gas dynamic spray technology

摘要

In the modern automotive industry, the maintenance of the vehicle during its life cycle is increasing\udin importance due to both economical and environmental considerations. A new frontier is the reparation\udof large parts, originally made by fusion, by the addition of material. The standard technique in the\udfield is the use of TIG welding, but in the last few years Cold Dynamic Gas Spray (CDGS) has started\udto show many promises in supplanting TIG repairs. The main advantage of CDGS is the absence of\udthermal stresses in the repaired zone with the elimination of thermal distension treatment of the part.\udIn this paper we study the use of CDGS to repair wear damage on a commercial aluminium engine\udblock in comparison with the standard repair procedure with TIG. The result obtained shows that\udCDGS is an effective technology for industrial-level repair.