Steel Sheet Cooling Path Adjustment for Microstructure Precision
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 personalized cooling path based on the steel sheet's chemical composition and microstructure, recalculation of cooling power, and selection of optimal thermal paths to achieve the target microstructure and mechanical properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a standardized cooling treatment is applied to all steel sheets, then the manufacturing process is simple and fast, but the mechanical properties show big dispersion and do not meet specifications
Solution Approach 1:
The patent implements dynamic adjustment of cooling parameters based on real-time detection of steel sheet characteristics and temperature deviations. The cooling rate, cooling water flow rate, and nozzle positioning are continuously modified during the thermal treatment process to adapt to actual conditions, transforming a static standardized process into a dynamic personalized one that maintains both efficiency and precision
Solution Approach 2:
The patent changes multiple cooling parameters including cooling rate, cooling water flow rate, and nozzle positioning based on detected deviations in steel sheet thickness, temperature, and microstructure. These parameter modifications enable personalized cooling treatments for different steel sheets while maintaining high manufacturing speed through automated real-time adjustment
2Manufacturing precision
If a personalized cooling treatment is calculated for each steel sheet, then the mechanical properties precision is improved, but the calculation time and process complexity increase
Solution Approach 1:
The patent employs feedback mechanisms where detectors continuously monitor steel sheet characteristics and temperature during thermal treatment, and the control unit automatically adjusts cooling parameters based on detected deviations from the target microstructure. This closed-loop feedback system achieves personalized precision treatment without requiring excessively complex manual control
Solution Approach 2:
The control system automatically calculates and adjusts cooling parameters based on real-time detection data, enabling the system to self-regulate and adapt to each steel sheet's characteristics without extensive external intervention. The system serves itself by using its own detection capabilities to drive precise control decisions
3Ease of operation
If cooling parameters are adjusted based on temperature deviation only, then the control is simple, but the target microstructure cannot be achieved due to ignoring steel sheet characteristics
Solution Approach 1:
The patent modifies multiple cooling parameters including cooling rate, cooling water flow rate, and nozzle positioning based on comprehensive detection of steel sheet characteristics such as thickness, chemical composition, and initial microstructure. This multi-parameter adjustment approach achieves accurate target microstructure while maintaining reasonable control complexity through automated calculation
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 ensures precise thermal treatment, minimizing property dispersion and achieving the desired mechanical properties with reduced variation, even when deviations occur, by adapting the cooling path to each steel sheet's specific characteristics.
Implementation Method 1
a predefined thermal treatment TT, comprising at least a heating, a soaking and a cooling steps, is performed
Implementation Method 2
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 3
a predefined thermal treatment TT, comprising at least a heating, a soaking and a cooling steps, is performed
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.