Sandblasting, high-pressure water jet, thermal and chemical treatments and other paint removal methods expose the surrounding environment to atmospheric hazards due to the resulting dust, dispersed liquid particles, ash and fumes.
The prime objective of this article is to describe how thermal spray technique could provide an environmentally-friendly cleaning and removal process. A second objective is to discuss results obtained by using the Dual Torch Plasma System (DTPS) for de-painting of aluminum substrates. It was shown that the high traverse speed of the DTPS prevents the appearance of mechanical stresses in aluminum alloy structures as thin as approximately 1.5 mm. A CMC repair and titanium welding using DTPS are also discussed.