Early-warning system capable of preventing magnetic material cracks

Abstract

The invention discloses an early-warning system capable of preventing magnetic material cracks. The early-warning system comprises a first microprocessor, an excitation module, a pen-type probe, a second microprocessor for signal processing and a third microprocessor for data collection. According to an automatic early-warning device against the ferromagnetic material cracks, under the situation that a ferromagnetic technical part is about to generate cracks as a result of various factors or excessive fatigue and overload in the production and using process, a signal is sent to the automatic early-warning device through the first microprocessor, the excitation module, the pen-type probe, the signal processing microprocessor and the data collection microprocessor, so that an alarm from an alarm inductor and a caution from an alarm lamp are caused. According to the device, a series of organization states of a ferromagnetic material are effectively monitored, and therefore potential cracks and other organization anomalies are assessed and early-warned. The device has the advantages of not damaging a workpiece and not having a high requirement on a part surface.

Description

technical field [0001] The invention relates to an automatic early warning device for detecting cracks in ferromagnetic materials. Background technique [0002] At present, in the production process of ferromagnetic materials, due to external force, vibration and other external loads, ferromagnetic materials are prone to cracks, which not only greatly weakens the mechanical strength of ferromagnetic metal materials, but also if it is used in mechanical equipment And engineering equipment, it is very likely to continue to expand with the continuous effect of external force load, resulting in failure of parts, and ultimately bring hidden dangers to the safety of mechanical equipment and engineering equipment; in order to effectively detect ferromagnetic materials in the production process People have invented various detection methods for the cracks of parts and components, including: radiation detection, ultrasonic detection, eddy current detection, acoustic emission detectio...

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Problems solved by technology

[0002] At present, in the production process of ferromagnetic materials, due to external force, vibration and other external loads, ferromagnetic materials are prone to cracks, which not only greatly weakens the mechanical strength of ferromagnetic metal materials, but also if it is used in mechanical equipment And engineering equipment, it is very likely to continue to expand with the continuous effect of external force load, resulting in failure of parts, and ultimately bring hidden dangers to the safety of mechanical equipment and engineering equipment; in order to effectively detect ferromagnetic materials in the production process People have invented various detection methods for the cracks of parts and components, including: radiation detection, ultrasonic detection, eddy current detection, acoustic emission detection and magnetic flux leakage, etc.; in terms of battery detection, there are existing Instruments and probes for material sorting and crack detection, but in terms of technical means, during the detection process of such instruments, the direction of the excitation field is constant, and even if there is a change, it is only in the three directions of X, Y, and Z. switch, and the detection in the three directions of the probe is independent of each other, and does not constitute an organic whole

And because the eddy current loss caused by the crack end face perpendicular to the magnetic field direction is small, the existing probes can only effectively detect the crack sections in the X, Y, and Z directions, and the cracks in other directions are less effective. Difference

[0003] Most of the above-mentioned instruments and methods can effectively detect macroscopic cracks in parts and components, and have become conventional technical means in the industrial field. However, their common deficiency is that such instruments can only detect cracks that have Tissue defects with cracks but with crack tendency generally cannot be effectively detected and early warning information can be given

Through retrieval, it is found that the current research in this area is relatively limited, and there is no effective testing instrument; in practical applications, due to external loads such as external forces and vibrations, once cracks are formed on parts, they may expand rapidly, thereby rapidly reducing Material strength, causing major safety hazards, especially for aircraft, high-speed rail, wind power and other major products, major equipment and key components in service of major projects, the early detection and detection of potential cracks is of great significance

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