S. Alexandre, T. Laguionie, B. Baccaud, CEA Le Ripault, Monts, France
The aim of this paper is to present the program of development that was managed in the C.E.A. to succeed in producing a coating of 300 µm of stainless steel in the internal surface of an aluminum cylinder with a diameter of 300 mm.
We will describe our works following these four points:
- How we managed to optimized the length of the nozzle, with calculations and measurements of the particles velocity by the mean of a DPV 2000.
- The experimental determination of the critical velocity of several types of powders.
- The optimization of the process parameters on samples and the correlation between the external coatings of the samples and the internal coatings in cylinders.
- The realization of the coating on a prototype, with the optimized process parameters.
Summary: This paper present the methodology applied to succeed in the realization of an industrial coating of stainless steel by Cold Spray technology. This coating was performed on the internal surface of a 300 mm diameter aluminum cylinder. This required a particular optimization of the nozzle, carried out with velocity calculations and measurements.
