Laserbohren von nicht kreisförmigen Öffnungen

Forming an aperture in a metal wall, including a diffuser opening up and out from bottom, comprises: (i) machining the wall with a laser beam of pulse rate and power sufficient to vaporise the metal; (ii) firing the laser at an acute angle across the surface at increasing pulse rate so that each bea...

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Bibliographische Detailangaben
Hauptverfasser:	KELLEY, JAMES GEORGE, ROCKSTROH, TODD JAY, CROW, JOHN MAYNARD
Format:	Patent
Sprache:	ger
Schlagworte:	AIR INTAKES FOR JET-PROPULSION PLANTS BLASTING CLADDING OR PLATING BY SOLDERING OR WELDING COMBUSTION ENGINES CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING GAS-TURBINE PLANTS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MACHINE TOOLS MECHANICAL ENGINEERING METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS SOLDERING OR UNSOLDERING TRANSPORTING WEAPONS WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	Forming an aperture in a metal wall, including a diffuser opening up and out from bottom, comprises: (i) machining the wall with a laser beam of pulse rate and power sufficient to vaporise the metal; (ii) firing the laser at an acute angle across the surface at increasing pulse rate so that each beam pulse vaporises the metal at a laser spot and drills continuously the metal wall; and (iii) traversing the laser beam latitudinally and longitudinally at increasing speed so that successive spots overlap in decreasing amounts to etch the metal, forming a continuous trench below surface.