Inductive Edge Heating Control for Uniform Flat Rolled Stock Temperature
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Solution Overview
Problem
Existing heating methods for flat metal rolling stock fail to maintain uniform temperature across edges due to manual positioning of inductive heating devices, leading to temperature discrepancies and requiring manual re-adjustment, which is inefficient and prone to errors.
Innovation Solution
An automated heating process where parameters characteristic of each edge's heating are recorded and fed into a control device to adjust the positioning of the heating devices, ensuring the desired temperature ratio or difference is maintained, allowing for real-time correction during heating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If manual positioning of heating devices is used, then device complexity is reduced, but manufacturing precision and reliability of temperature uniformity deteriorate
Solution Approach 1:
The patent implements a feedback control system where temperature sensors continuously monitor the temperature at both edges of the rolled stock during heating. The control device receives these temperature signals and automatically adjusts the positioning of the inductive heating devices to maintain uniform temperature distribution, eliminating the need for manual positioning while ensuring precise temperature control.
Solution Approach 2:
The heating system performs self-adjustment through automated control. The control device autonomously positions the heating devices based on real-time temperature feedback from sensors, without requiring external manual intervention. This self-service mechanism ensures consistent temperature uniformity across the rolled stock edges throughout the heating process.
2Ease of operation
If manual positioning is used, then ease of operation is improved, but productivity deteriorates due to repeated manual re-adjustment
Solution Approach 1:
The automated feedback control system continuously monitors temperature at both edges and automatically adjusts heating device positioning in real-time. This eliminates the need for operators to manually stop and re-adjust the heating devices during the heating process, maintaining ease of operation while significantly improving productivity by enabling continuous uninterrupted heating.
Solution Approach 2:
The patent replaces manual mechanical positioning with an automated control system that uses electrical signals to adjust heating device positions. This substitution of mechanical manual operation with automated electro-mechanical control eliminates repeated interruptions, thereby increasing heating process efficiency and productivity while maintaining operational simplicity.
3Device complexity
If heating devices are positioned manually before heating, then device complexity is reduced, but reliability deteriorates due to uncorrected positioning errors
Solution Approach 1:
The patent employs real-time temperature feedback from sensors positioned at both edges of the rolled stock. The control device continuously compares actual temperatures with target values and automatically adjusts heating device positioning during the heating process. This feedback mechanism ensures that any positioning deviations or environmental variations are immediately corrected, maintaining reliable and consistent temperature uniformity throughout the heating operation.
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
Ensures consistent heating of both edges during the rolling process, reducing temperature discrepancies and improving the efficiency of the heating process by allowing for dynamic adjustment of heating device positions.
Implementation Method 1
The heating devices induce eddy currents in the respective edge area. The resulting heating depends on both the power and the position of the respective heating device
Implementation Method 2
The heating devices induce eddy currents in the respective edge area. The resulting heating depends on both the power and the position of the respective heating device
Implementation Method 3
The heating devices induce eddy currents in the respective edge area. The resulting heating depends on both the power and the position of the respective heating device
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A flat rolled metal stock (2) extends transversely to a longitudinal direction (x) from a left to a right edge (3, 4). A first inductive heating device (5) heats the left edge (3) more than the right edge (4), while a second inductive heating device (6) heats the right edge (4) more than the left edge (3). During the heating of the two edges (3, 4), parameters (K1, K2) are recorded that are characteristic of the heating of the respective edges (3, 4). These parameters (K1, K2) are fed to a control unit (8), which determines a control command (P1, P2) based on the ratio (k) or the difference (δK) of the two parameters (K1, K2).Based on the positioning command (P1, P2), a lateral positioning of at least one of the two heating devices (5, 6) is adjusted relative to the rolled material edge (3, 4) that is heated more intensely by the respective heating device (5, 6). The positioning command (P1, P2) is determined by the control unit (8) such that the ratio (k) of the two parameters (K1, K2) is approximated to a target ratio (k*) or the difference (δK) of the two parameters (K1, K2) is approximated to a target difference (δK*).