METHOD FOR CHEMICALLY PICKLING A CAST METAL PART WITH POROUS CERAMIC CORE(S)
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United States of America Patent
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Jun 8, 2023
app pub date -
Mar 15, 2021
filing date -
Mar 18, 2020
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Abstract
A method for chemically pickling a cast metal part, including a metal envelope which delimits an inner space in which at least one porous ceramic core is housed, and an outer space, the ceramic core being in fluid communication with the outer space, which method including: filling the pores of the ceramic core with a liquid; and then chemically pickling the cast metal part. This chemical pickling method may be implemented in a method for manufacturing a metal part by investment casting. This method is applicable at least to manufacture of turbine blades for turbomachines and, especially, for aircraft turbojet engines.
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