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US 12,522,945 B2Granted
Procedure for finishing stainless steel parts
AssigneeAcondicionamiento Tarrasense
InventorsMarc Belenguer Rizo, Laurent Aubouy, Mercè De La Fuente Jorda, Antoni Meseguer Guallar, Laura Soldi, Martí Calvet Molinas, Anna Domenech Castells, Eva Dominguez Hervella
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Abstract
The present invention relates to a procedure for finishing stainless steel parts. The finishing process of the invention is particularly useful for stainless steel parts of complex structure such as those produced by additive manufacturing of metals.
Claims9
A procedure for finishing a stainless steel part manufactured by additive manufacturing comprising the steps of:
- (a) placing the stainless steel part into an acidic aqueous solution with a pH of 0 to 4 comprising a non-oxidizing acid, and an oxidizing acid and a surfactant;
- (b) after step (a) placing the stainless steel part into water;
- (c) after step (b) placing the stainless steel part into an acid solution with a pH between 0 and 4;
- and
- (d) electropolishing the stainless steel part, wherein the stainless steel part is connected to a positive pole so that the stainless steel acts as an anode and a cathode is connected to a negative pole.
2 more elements
Dependencies are inferred from the claim text.