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METHODS FOR ADDITIVELY MANUFACTURING TURBINE ENGINE COMPONENTS VIA BINDER JET PRINTING WITH NICKEL-CHROMIUM-TUNGSTEN-MOLYBDENUM ALLOYS
METHODS FOR ADDITIVELY MANUFACTURING TURBINE ENGINE COMPONENTS VIA BINDER JET PRINTING WITH NICKEL-CHROMIUM-TUNGSTEN-MOLYBDENUM ALLOYS
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机译:通过镍-铬-钨-钼合金粘合剂射流印刷法制造涡轮发动机成分的方法
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摘要
Methods for manufacturing an article include providing a three-dimensional computer model of the article and providing a metal alloy in powdered form. The metal alloy is a nickel-chromium-tungsten-molybdenum alloy. The powdered form includes a grain size range of about 5 to about 22 microns and a d50 grain size average of about 10 to about 13 microns. The methods further include, at a binder jet printing apparatus, supplying the metal alloy and loading the three-dimensional model, and, using the binder jet printing apparatus, manufacturing the article in accordance with the loaded three-dimensional model in a layer-by-layer manner with the supplied metal alloy. A liquid binder is applied at each layer, and each layer has a thickness of about 10 to about 150 microns. The methods avoid remelting of the metal alloy and avoid metal alloy cooling rates of greater than about 100° F. per minute.
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