Method for establishing a likelihood of defects in a cast product section

US20250001487A1Pending Publication Date: 2025-01-02PRIMETALS TECH AUSTRIA GMBH
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Patent Information

Application Number
US18/292889
Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
Priority Date
2021-07-28
Filing Date
2022-07-27
Publication Date
2025-01-02

AI Technical Summary

Technical Problem

Existing casting technologies face challenges in detecting quality-reducing defects in real-time during the casting process, leading to delayed identification and ineffective corrective measures.

Method used

A multistage product section calculation method using a computer system with characterizing parameters and selected operating parameters from measuring instruments or higher-order automation systems, employing thermodynamic calculations to determine matrix phase changes and precipitant proportions, ultimately generating a defect index for real-time defect detection.

Benefits of technology

Enables immediate identification of defects before the product leaves the casting plant, allowing for timely corrective actions such as adjusting cutting positions or processing steps, thereby improving product quality.

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Abstract

A method that allows quality-reducing defects to be detected before the cast product has left a casting plant by establishing a likelihood of defects in a cast product section with a multi-stage product section, the method including multi-step calculations performed in real time. In a first calculation step, at least changes in matrix phase proportions and an element concentration profile in phase regions are calculated in each case for a temperature-time step. The results of the first calculation step are fed to a second calculation step. In the second calculation step, a change in precipitation proportions out of at least one phase region is determined for the subsequent temperature-time step. The results of the second calculation step are used as input variables for the first calculation step. The results of the calculations are used to determine at least one defect index.
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Citation Information

Patent Citations

  • Casting body quality judging method and device for continuous casting machine

    CN102019393B