Apparatus for coating internal surfaces

专利名称：Apparatus for coating internal surfaces发明人：Doherty, William George,McCoy, Mark,Sharp,

David John

申请号：EP303071.8申请日：190329公开号：EP0336630A1公开日：191011

专利附图：

摘要：A plasma spray apparatus adapted for coating an irregular internal surface (103)of a tubular object (101) in which the spray apparatus has a nozzle (140) for directing thecoating material on the internal surface (103) of the object (101) and wherein a centralspray axis (109) drawn through the centre line of the nozzle (140) comprises: (a) a plasmatorch (105) having a spraay nozzle (140)(b) first arm means (111) attached to the torch(105)(c) second arm means (121) attached to the first arm means (111) (d) third armmeans (131) attached to the second arm means (121) (e) moving (147,149) and rotatingmeans (151) connected by a shaft (153) in suitable stiff bearings (155) and connecting

means (157) to the outer end of the third arm means (131) for moving the first armmeans (111), second arm means (121), and third arm means (131) to effect movement ofthe spray nozzle (140) in a direction parallel and in the direction perpendicular to thelongitudinal axis (101a) of the tubular object (101), and for rotating (159) the spraynozzle (140) about a rotational axis (145) so that the central spray axis (109) is directedperpendicular to the impingement point (107) on the internal surface (103) of the tubularobject (101); and (f) conventional co-ordinating means for co-ordinating the movementand rotation of the spray nozzle (140).

申请人：Praxair S.T. Technology, Inc.

地址：441 Sackett Point Road North Haven, CT 073 US

国籍：US

代理机构：Gore, Peter Manson

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