| 摘要 |
The invention is relative to opening devices for spinning machines, especially open-end spinning machines, that are provided with garniture [fitting, trimming, clothing, set] wires ( 3 ) or garniture rings ( 11 ) for individualizing fibers of a supplied sliver. The opening device in accordance with the invention is characterized in that the garniture wires ( 3 ) are pre-bent in accordance with the geometry of the carrier ring ( 2 ), that the garniture rings ( 11 ) have the desired geometry of the finished part, and that the particular workpiece surfaces have an at least two-coating construction in which an outer coating or ( 13 ) is a hard-substance coating. The hard-substance coating consists entirely or partially of especially hard hard-substance components and rests on a substrate layer ( 12 ) located underneath it.
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