The present invention provides a surface
cleaning method for removing adherent material from composite surfaces
formed of a reinforced matrix material. Steps in the method include the
provision of a granular media substantially composed of particles of a
material which has a Mohs scale hardness number lower than 4.0. The media
is then accelerated using media propelling means to produce a
substantially continuous media flow at a media outlet having a pressure of
approximately 40 pounds per square inch or less at the media outlet. The
media is directed at target composite composite surface to be cleaned.
Adherent material is removed from the target composite surface by the
action of the media without damage to the composite surface.
In its preferred form, the method includes the
use of a flexible tube and nozzel to direct the media at the target
composite surface. The media flow is directed at a selected angle with
respect to the composite surface to optimize the cleaning action. Steps
are also set forth which minimize the possibility of damage to the
underlying composite surface.
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