Melt Level Detection in Oscillating Molds
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Solution Overview
Problem
Existing methods for detecting the level of a melt in an oscillating mold are limited in accuracy and robustness against disturbances, particularly during continuous casting, as they consider radiation signal variations caused by mold oscillation as noise rather than usable information.
Innovation Solution
A method that senses and generates radiation signals interacted with the melt, determines radiation signal variations, and combines these with oscillation deflection variations to accurately detect the melt level, enabling contactless measurement and real-time feedback for continuous casting processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If radiation-based level detection is used in oscillating molds, then non-contact measurement is enabled, but measurement accuracy deteriorates due to oscillation-induced signal variations
Solution Approach 1:
The patent converts the harmful oscillation-induced radiation signal variations into useful information by correlating them with known oscillation deflection data. The signal variations that were previously considered noise now provide additional measurement information that, when combined with oscillation deflection variations, enables accurate melt level detection despite mold oscillation
Solution Approach 2:
The patent implements a feedback mechanism where oscillation deflection variations (obtained from sensors or calculations) are fed back into the measurement system and combined with radiation signal variations. This feedback loop allows the system to compensate for oscillation effects and accurately determine melt level in real-time during mold oscillation
2Device complexity
If traditional radiation detection methods are used, then device complexity is reduced, but reliability against oscillation disturbances deteriorates
Solution Approach 1:
The patent merges two measurement approaches: radiation-based level detection and oscillation deflection measurement. By combining these two independent measurement systems and correlating their signals, the patent achieves reliable melt level detection that is robust against oscillation disturbances while maintaining relatively simple device architecture
3Productivity
If radiation signals are continuously monitored, then real-time melt level control is achieved, but signal noise from oscillation increases
Solution Approach 1:
The patent transforms the oscillation-induced signal variations from noise into useful measurement information. By continuously monitoring both radiation signals and oscillation deflection and correlating them, the system achieves real-time melt level control while the previously harmful oscillation effects now provide additional measurement data
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 enhances the accuracy and robustness of melt level detection, allowing for precise control of melt levels and continuous casting processes while preventing sticking and oxidation, and enables the detection of casting powder thickness without contact.
Implementation Method 1
sensing radiation interacted with the melt and generating from the sensed radiation radiation signals
Data Source
Figure 1~2
Figure 3~4
AI summary
Method for detecting a level (LE) of a melt (ME) contained by an oscillating mold (3), wherein the method comprises the steps: - a) sensing radiation (IR) interacted with the melt (ME) and generating from the sensed radiation (IR) radiation signals (RS), such that the generated radiation signals (RS) are varied by the mold oscillation (MO), - b) determining a radiation signal variation (RSV) of the generated radiation signals (RS), - c) determining an oscillation deflection variation (ODV) of the oscillating mold (3), and - d) determining from the determined oscillation deflection variation (ODV) and the determined radiation signal variation (RSV) the level (LE) of the melt (ME).