Dynamic Steel Sheet Cooling Control for Consistent Properties
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for thermally treating steel sheets in heat treatment lines do not account for the unique characteristics of each steel sheet, leading to unplanned deviations and poor quality steel with inconsistent mechanical properties due to non-personalized cooling treatments.
Innovation Solution
A method of dynamical adjustment that detects deviations during thermal treatment and calculates a new thermal path specific to each steel sheet, taking into account its chemical composition, microstructure, and process parameters to ensure precise and personalized heat treatment, minimizing property dispersion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a non-personalized cooling treatment is applied to multiple steel grades, then the manufacturing process is simple and fast, but the mechanical properties of the treated steel show big dispersion and poor quality
Solution Approach 1:
The patent implements a dynamic adjustment system that continuously monitors temperature, line speed, and thickness during thermal treatment and automatically recalculates cooling parameters in real-time. The system transitions from static, pre-programmed cooling curves to dynamic, adaptive control that responds to actual process conditions, thereby maintaining both high productivity and consistent mechanical properties across different steel grades.
Solution Approach 2:
The system changes cooling parameters (flow rate, temperature, timing) based on detected variations in steel characteristics. By dynamically adjusting these parameters according to actual temperature measurements and line speed variations, the system optimizes cooling treatment for each specific steel grade while maintaining efficient production rates.
2Device complexity
If a standardized thermal treatment process is used for all steel sheets, then the process complexity is low, but the desired microstructure and mechanical properties cannot be achieved due to unplanned deviations
Solution Approach 1:
The patent incorporates multiple temperature sensors and detectors that continuously monitor the thermal treatment process. The system uses feedback from these sensors to detect deviations from the intended process and automatically adjusts cooling parameters to compensate. This closed-loop control system maintains reliable microstructure quality without requiring overly complex manual intervention.
Solution Approach 2:
The system performs self-adjustment by automatically detecting process variations and recalculating optimal cooling parameters without external intervention. The automated control system serves itself by making real-time decisions based on sensor data, thereby maintaining high reliability while keeping the operational interface simple.
3Manufacturing precision
If the cooling parameters are adjusted dynamically based on steel characteristics, then the mechanical properties consistency is improved, but the calculation time and control complexity increase
Solution Approach 1:
The system pre-calculates cooling curves and parameters for different steel grades and stores them in a database. When production begins, the system selects the appropriate pre-calculated parameters based on steel grade identification and makes minor real-time adjustments based on sensor feedback. This approach avoids time-consuming calculations during production while maintaining precision.
Solution Approach 2:
The system efficiently changes parameters by using lookup tables and pre-programmed cooling curves specific to each steel grade. When a steel grade is identified, the corresponding optimized parameters are instantly retrieved and applied, with minimal real-time adjustment, thereby achieving high precision without significant time loss.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach allows for the production of steel sheets with consistent and desired mechanical properties by adapting the thermal treatment in real-time, reducing property dispersion and improving the overall quality of the treated steel.
Implementation Method 1
a thermally treated steel sheet having a chemical steel composition and a microstructure m target comprising from 0 to 100% of at least one phase chosen among: ferrite, martensite, bainite, pearlite, cementite and austenite
Implementation Method 2
a predefined thermal treatment TT is performed on the steel sheet
Implementation Method 3
a quenching and partitioning treatment
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present invention relates to a method of dynamical adjustment for manufacturing a thermally treated steel sheet.