POWDER SMOKE DETECTION DURING ADDITIVE MANUFACTURING
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United States of America Patent
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Issued Date -
Jul 25, 2024
app pub date -
Nov 24, 2023
filing date -
Jan 20, 2023
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Abstract
In accordance with one or more embodiments herein, an arrangement for additive manufacturing by selective fusion, using an electron beam, of a three-dimensional product from a powder bed, is provided. The arrangement comprises at least one electron detecting arrangement arranged to detect powder smoke by detecting electrons which have been scattered by the electron beam hitting powder particles which levitate above the powder bed. Also provided is a method for detecting powder smoke during additive manufacturing, the method comprising: arranging at least one electron detecting arrangement in an arrangement for additive manufacturing by selective fusion, using an electron beam, of a three-dimensional product from a powder bed; detecting electrons which have been scattered by the electron beam hitting powder particles which levitate above the powder bed; and determining whether there is powder smoke based on the output from the at least one electron detecting arrangement.
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