US 12,093,796 B2
Method for determining mechanical properties of a rolled material using a hybrid model
Du Nguyen Duy, Hagenberg im Mühlkreis (AT); Katharina Freinschlag, Klam (AT); Sergey Bragin, Linz (AT); Klaus Jax, Hellmonsödt (AT); Axel Rimnac, Linz (AT); Alfred Seyr, Oberschlierbach (AT); and Sonja Strasser, Garsten (AT)
Assigned to Primetals Technologies Austria GmbH, Linz (AT)
Appl. No. 18/293,067
Filed by Primetals Technologies Austria GmbH, Linz (AT)
PCT Filed Jul. 13, 2022, PCT No. PCT/EP2022/069634
§ 371(c)(1), (2) Date Jan. 29, 2024,
PCT Pub. No. WO2023/006430, PCT Pub. Date Feb. 2, 2023.
Claims priority of application No. 21187849 (EP), filed on Jul. 27, 2021.
Prior Publication US 2024/0265302 A1, Aug. 8, 2024
Int. Cl. G06N 20/00 (2019.01); B21B 37/00 (2006.01); G06F 30/27 (2020.01)
CPC G06N 20/00 (2019.01) [B21B 37/00 (2013.01); G06F 30/27 (2020.01)] 15 Claims
OG exemplary drawing
 
1. A method for determining mechanical properties of a first rolled material, produced in a rolling mill, using a hybrid model, based on a production dataset of the first rolled material, the hybrid model comprising:
production datasets of further rolled materials, produced in the rolling mill, from a first set that each have available corresponding sampling datasets, comprising the mechanical properties of the further rolled materials ascertained by a sampling device after production in the rolling mill;
a physical production model comprising a set of metallurgical model parameters, for ascertaining:
a first mechanical dataset, comprising the mechanical properties of the first rolled material after production in the rolling mill,
a further production dataset, comprising further production data of the first rolled material during production in the rolling mill,
and a metallurgical dataset, comprising metallurgical properties of the first rolled material during production in the rolling mill, and
a trained and validated statistical data model for ascertaining a second mechanical dataset, comprising the mechanical properties of the first rolled material after production in the rolling mill;
wherein the method comprises a first, a second, a third and a fourth step;
wherein the first step involves ascertaining the first mechanical dataset, the further production dataset and the metallurgical dataset of the first rolled material from the production dataset of the first rolled material via the physical production model;
wherein the second step involves ascertaining the second mechanical dataset of the first rolled material from the production dataset, the further production dataset and the metallurgical dataset of the first rolled material via the statistical data model;
wherein the third step involves determining for the production dataset of the first rolled material an averaged normalized distance value in relation to a number of production datasets of the further rolled materials; and
wherein the fourth step involves using the averaged normalized distance value to ascertain the mechanical properties of the first rolled material as a weighted average from the first and second mechanical datasets, the quotients of the mutually corresponding values of the second and first mechanical datasets being weighted in proportion to the averaged normalized distance value.