HIGH-PRESSURE WATERJET CUTTING HEAD SYSTEMS, COMPONENTS AND RELATED METHODS

摘要

an orifice unit 14 for generating a high pressure water jet, a nozzle body 16 and a nozzle component 20 connected to the nozzle body 16 by an orifice unit 14 disposed between the nozzle component and the nozzle body A waterjet cutting head assembly (12) is provided. The nozzle component 20 can include a waterjet passageway 44 , at least one jet alteration passageway 50 , and at least one environmental control passageway 60 . Jet alteration passageway 50 may traverse waterjet passageway 44 to enable selective modification of the waterjet during operation through the introduction of a secondary fluid or an abrasive medium or application of a vacuum. The environmental control passage 60 is such that during operation the gas passing through the environmental control passage 60 is directed to impinge upon the exposed surface of the workpiece at or near the location where the water jet cuts the workpiece, the single body extending through and may include one or more downstream portions 62 aligned with the fluid jet passageway 36 . Other high pressure waterjet cutting systems, components and related methods may also be provided.