Surface exposure device for supporting annular object in material or energy particle stream uses fixing hoop for suspension of object attached to rotatable bolt

摘要

The surface exposure device has at least one fixing hoop (3) from which the annular object (1) is hung and which is releasably attached to a rotatable bolt (4), with a rotation axis perpendicular to the gravitational force (g) and parallel to the direction (2) of the material or energy particle stream.