Curie Temperature Detection for Permanent Magnets
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Solution Overview
Problem
Existing methods for detecting the Curie temperature of permanent magnet materials, such as vibration sample magnetometers and magnetic weighing methods, are expensive, complex, and limited to small sample testing, making them unsuitable for industrial applications.
Innovation Solution
A device and method involving a detection coil, a temperature test box with a piercing hole for the sample, a temperature sensor, and a magnetic flux integrator, which allows for the detection of Curie temperature by varying the temperature in the test box and measuring the corresponding magnetic moment data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If vibration sample magnetometer method or magnetic weighing method is used, then measurement precision of Curie temperature is improved, but device complexity and cost increase significantly
Solution Approach 1:
The patent extracts only the essential functional components needed for Curie temperature detection from complex commercial instruments. It uses a simple detection coil, temperature test box, and magnetic flux integrator to achieve the core measurement function, eliminating unnecessary complex subsystems while maintaining detection capability
Solution Approach 2:
The patent employs inexpensive, easily replaceable components such as a simple detection coil and basic temperature sensor instead of expensive, complex instrumentation. The test box and coil can be easily replaced or recalibrated, reducing overall system cost and complexity while maintaining measurement functionality
2Measurement precision
If vibration sample magnetometer method is used, then measurement precision is improved, but ease of operation deteriorates due to strict environmental requirements
Solution Approach 1:
The detection system performs self-calibration and automatic measurement through the magnetic flux integrator and temperature control system. The device automatically tracks the magnetic moment changes as temperature varies, eliminating the need for manual environmental adjustments or complex operational procedures required by traditional methods
Solution Approach 2:
The detection device can handle various sample types and sizes through the versatile test box design with piercing holes for different sample configurations. The same basic apparatus works for different magnetic materials and testing conditions, reducing the need for specialized equipment setup and environmental controls
3Measurement precision
If traditional detection methods are used, then measurement precision is improved, but productivity decreases due to time-consuming procedures
Solution Approach 1:
The patent implements continuous temperature scanning through the temperature test box, which continuously heats or cools the sample while the detection coil continuously measures magnetic moment changes. This continuous measurement process eliminates the need for multiple discrete measurements at different temperatures, significantly reducing detection time while maintaining accuracy
Solution Approach 2:
The magnetic flux integrator is pre-calibrated and the detection coil is pre-positioned before sample insertion. The temperature test box is pre-configured with piercing holes for sample placement, allowing rapid sample loading and immediate measurement without time-consuming setup procedures
4Measurement precision
If vibration sample magnetometer method is used, then measurement precision is improved, but adaptability deteriorates as it is only suitable for small samples
Solution Approach 1:
The patent transitions from restricted small-sample measurement to accommodative large-sample measurement by changing the spatial dimension of the detection setup. The test box with piercing holes allows samples of various dimensions to be positioned appropriately within the detection coil's magnetic field, enabling measurement of larger samples that would not fit in traditional vibration sample magnetometers
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
The solution enables simple and rapid detection of the Curie temperature of permanent magnet materials, suitable for industrial use, with a straightforward structure that can handle larger samples.
Implementation Method 1
a detection coil, two ends of the detection coil are respectively fixed by a sample fixing tube; a magnetic flux integrator connected with the detection coil
Implementation Method 2
a temperature sensor arranged in the temperature test box
Implementation Method 3
a magnetic flux integrator connected with the detection coil
Implementation Method 4
the temperature test box is communicated with a temperature control device
Data Source
AI summary
A device and method for detecting Curie temperature of a permanent magnet material is provided, and relates to the technical field of magnetic material detection. The device includes a detection coil, two ends of the detection coil are respectively fixed by a sample fixing tube; a temperature test box arranged inside the detection coil, the temperature test box is provided with a piercing hole for a permanent magnet material sample to be tested to pass in and out, the temperature test box is communicated with a temperature control device; a temperature sensor arranged in the temperature test box; and a magnetic flux integrator connected with the detection coil.