US 12,111,275 B2
Checking methods and systems for checking a mechanical piece manufactured by using a mold and a manufacturing process in a foundry
Stefano Bellucco, Bologna (IT); and Daniele Lanzoni, Cento (IT)
Assigned to Marposs Societa' Per Azioni, Bentivoglio (IT)
Appl. No. 17/413,128
Filed by Marposs Societa' Per Azioni, Bentivoglio (IT)
PCT Filed Dec. 17, 2019, PCT No. PCT/EP2019/085753
§ 371(c)(1), (2) Date Jun. 11, 2021,
PCT Pub. No. WO2020/127347, PCT Pub. Date Jun. 25, 2020.
Claims priority of application No. 102018000020014 (IT), filed on Dec. 18, 2018; and application No. 102018000020017 (IT), filed on Dec. 18, 2018.
Prior Publication US 2022/0042940 A1, Feb. 10, 2022
Int. Cl. G01N 25/72 (2006.01); B22D 17/32 (2006.01); B22D 46/00 (2006.01)
CPC G01N 25/72 (2013.01) [B22D 17/32 (2013.01); B22D 46/00 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method for checking a mechanical piece made with a mold in a foundry, the method comprising:
acquiring at least one real thermographic image of an internal surface of the mold;
comparing at least part of the at least one real thermographic image and/or parameters based on the at least part of the at least one real thermographic image with at least part of at least one reference thermographic image and/or parameters based on the at least part of the at least one reference thermographic image to determine a dissimilarity value;
requesting further quality control of the mechanical piece when the dissimilarity value is outside of a first range; and
deciding to discard the mechanical piece when the dissimilarity value is outside of a second range, wherein the second range is different from the first range.