US 11,919,262 B2
Method for post-processing an additively manufactured part
Joseph Crabtree, Sheffield (GB); Konstantin Rybalcenko, Sheffield (GB); and Ioannis Anastasopoulos, Sheffield (GB)
Assigned to Additive Manufacturing Technologies Limited, Sheffield (GB)
Appl. No. 17/905,122
Filed by Additive Manufacturing Technologies Limited, Sheffield (GB)
PCT Filed Mar. 3, 2021, PCT No. PCT/GB2021/050532
§ 371(c)(1), (2) Date Aug. 26, 2022,
PCT Pub. No. WO2021/176217, PCT Pub. Date Sep. 10, 2021.
Claims priority of application No. 2003066 (GB), filed on Mar. 3, 2020; and application No. 2009042 (GB), filed on Jun. 15, 2020.
Prior Publication US 2023/0166466 A1, Jun. 1, 2023
Int. Cl. B29C 71/00 (2006.01); B29C 64/153 (2017.01); B29C 64/188 (2017.01); B29C 64/30 (2017.01); B33Y 10/00 (2015.01); B33Y 40/20 (2020.01); B33Y 80/00 (2015.01)
CPC B29C 71/0009 (2013.01) [B29C 64/153 (2017.08); B29C 64/188 (2017.08); B29C 64/30 (2017.08); B33Y 10/00 (2014.12); B33Y 40/20 (2020.01)] 21 Claims
OG exemplary drawing
 
1. A method for post-processing a powder-based additively manufactured part, the method comprising the steps of:
providing a powder-based additively manufactured part, the additively manufactured part comprising a material having a melting point;
providing a fluid for processing the additively manufactured part in order to improve the surface finish of the additively manufactured part;
a heating step, wherein the fluid is heated; and
an application step, wherein the heated fluid is applied to a surface of the additively manufactured part,
wherein the fluid comprises at least one acetal; and wherein the at least one acetal is selected from one or more of formaldehyde dibutyl acetal, aminoacetaldehyde dimethyl acetal, acetaldehyde diethyl acetal, acrolein diethyl acetal, phenylacetaldehyde dimethyl acetal, anisaldehyde dimethyl acetal, citral diethyl acetal, 2,2-diethoxyacetophenone, and ethyl diethoxyacetate.