ABSTRACT
A number of surface processing technologies based on the use of the air-ice stream have been previously suggested. A car washing machine constituted the first attempt towards utilization of the ice particles [1]. Another technology used a stream of charged ice particles directed toward surfaces [2]. Szijcs [3] proposed cleaning of sensitive surfaces by the impact of fine grade ice and air. The atomization of the liquid in the air stream and subsequent freezing of the generated fine droplets formed the blast material. The freezing was achieved by the addition of a refrigerant (N2, C02, Freon) into the stream in the mixing chamber or by the addition of refrigerant into the jet after the mixing chamber. Another technology in-
