Covering mask for plasma coating cylinder bores of a crankcase or I.C. engines comprises a pressure part in a hole with a thread and openings for a wear ring made from sheet steel strips whose ends are welded together
摘要
<p>Covering mask (1) comprises a pressure part (4) in a hole (5) with a thread and openings for a wear ring (2) made from sheet steel strips whose ends are welded together or form a tubular section.</p>
