Plasma coating lance for internal coatings

US11866826B2 · kind B2 · utility

Assignee

• OERLIKON METCO AG, WOHLEN · CH

Inventors

• Martin STOECKLI · Boswil, CH
• Alexander MICHLA · Hohentengen, DE

Key dates

• Filing date: May 29, 2018
• Grant date: Jan 9, 2024
• Expiry date: Nov 4, 2038

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P10/25
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

The invention relates to a coating lance for a plasma process, the lance comprising a plasma shaft, a plasma neck, and a plasma head, the plasma shaft comprising a longitudinal channel, which extends in an axial direction along an axis from a first shaft end to a second shaft end, the plasma neck comprising a shaft boss and a head boss and at least one neck channel, which extends from the shaft boss to the head boss, and the shaft boss being arranged on the second shaft end in such a way that the longitudinal channel leads into the at least one neck channel, the plasma head comprising a neck boss, a plasma opening, and at least one head channel, which extends from the neck boss to the plasma opening, and the neck boss of the plasma head being arranged on the head boss of the plasma neck in such a way that the at least one neck channel leads into the head channel. The course of the plasma channel deviates from the axis in such a way that the neck channel leads into the head channel eccentrically with respect to the axis, i.e. at an offset to the axis.