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Wire rope nondestructive testing instrument magnetic field optimization distribution structure advantage
Release time:
2022-11-02
In the nondestructive testing of steel wire rope, the structure design of the detector is very important to the detection accuracy of steel wire rope. When the steel wire rope is in bending operation, its internal steel wire is also under force. Because the steel wire rope is composed of many steel wires and rope cores, it can produce buffer and structural deformation when bending or vibrating. Each steel wire also has pressure, tension and force states of running inner circle and running outer circle. The thicker the steel wire, the greater the impact. The bending of the steel wire itself is rigid bending, and the diameters of the steel wires that make up the steel wire rope are very different, so the structural parameters that will affect the accuracy of the detector are: magnet length, magnet thickness, armature thickness, armature length and other parameters. With the increase of the thickness and length of the magnet, the detection accuracy will be significantly improved, while the armature length is negatively correlated. In order to ensure the accuracy of the detection, the parameters of the wire rope detector are optimized according to the experimental scientific analysis, and the magnetic line distribution, magnetic field distribution and the strength analysis of the parameters are compared and verified. Eight groups of Hall elements are determined to be arranged circumferentially along the wire rope, which can sense LF (local damage) and LMA (metal cross-sectional area damage) dual-channel signals at the same time. When the surface of the steel wire is damaged, such as corrosion pits, wear, etc., the magnetic resistance increases and the magnetic flux decreases at the damaged place, causing the internal magnetic induction line to deform and twist. The dual-signal detector can accurately detect its internal and external broken wires, and scientifically quantify the metal cross-sectional area loss (LMA) caused by wear (LF), corrosion, etc. The magnetic field lines of the instrument are evenly distributed, the excitation effect is excellent, the magnetic flux leakage signal is obvious, the difference between different damage signals is large, the signal is clear, and the advantages are significant. The non-destructive testing instrument has been widely used in mining, marine engineering, bridge and other fields of wire rope nondestructive testing. After continuous research and service practice, Baikett has formed a scientific and standardized theoretical system and rich experience of wire rope detection technology, advocating to provide comprehensive solutions for different industries.
In the nondestructive testing of steel wire rope, the structure design of the detector is very important to the detection accuracy of steel wire rope. When the steel wire rope is in bending operation, its internal steel wire is also under force. Because the steel wire rope is composed of many steel wires and rope cores, it can produce buffer and structural deformation when bending or vibrating. Each steel wire also has pressure, tension and force states of running inner circle and running outer circle. The thicker the steel wire, the greater the impact. The bending of the steel wire itself is rigid bending, and the diameters of the steel wires that make up the steel wire rope are very different, so the structural parameters that will affect the accuracy of the detector are: magnet length, magnet thickness, armature thickness, armature length and other parameters. With the increase of the thickness and length of the magnet, the detection accuracy will be significantly improved, while the armature length is negatively correlated.
In order to ensure the accuracy of the detection, the parameters of the wire rope detector are optimized according to the experimental scientific analysis, and the magnetic line distribution, magnetic field distribution and the strength analysis of the parameters are compared and verified. Eight groups of Hall elements are determined to be arranged circumferentially along the wire rope, which can sense LF (local damage) and LMA (metal cross-sectional area damage) dual-channel signals at the same time. When the surface of the steel wire is damaged, such as corrosion pits, wear, etc., the magnetic resistance increases and the magnetic flux decreases at the damaged place, causing the internal magnetic induction line to deform and twist. The dual-signal detector can accurately detect its internal and external broken wires, and scientifically quantify the metal cross-sectional area loss (LMA) caused by wear (LF), corrosion, etc. The magnetic field lines of the instrument are evenly distributed, the excitation effect is excellent, the magnetic flux leakage signal is obvious, the difference between different damage signals is large, the signal is clear, and the advantages are significant.
The non-destructive testing instrument has been widely used in mining, marine engineering, bridge and other fields of wire rope nondestructive testing. After continuous research and service practice, Baikett has formed a scientific and standardized theoretical system and rich experience of wire rope detection technology, advocating to provide comprehensive solutions for different industries.
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