Fluorescent Magnetic Particle Flaw Detector AC 15000A Two Magnetized Coils
Fluorescent Magnetic Particle Flaw Detector AC 15000A Two Magnetized Coils
I. Working Principle
Magnetic particle inspection utilizes the interaction between the leakage magnetic field at the defect site of the workpiece and magnetic particles. It takes advantage of the difference in magnetic permeability between surface and near-surface defects (such as cracks, slag inclusions, hairline streaks, etc.) of steel products and the magnetic permeability of steel. After magnetization, the magnetic field at the discontinuous parts of these materials will be distorted, resulting in partial magnetic flux leakage and the generation of a leakage magnetic field. By taking advantage of the characteristic that the leakage magnetic field at the defect site can adsorb magnetic particles, This attracts magnetic powder to form a magnetic powder accumulation at the defect site - magnetic traces. Under appropriate lighting conditions, the location and shape of the defect are revealed.
II. Execution Standards
Magnetic particle flaw detector: GB/ T8290-2011
Observation conditions for magnetic particle testing: GB/T 5097-2020/ ISO 3059:2012
American Society for Testing and Materials: Magnetic particle testing method ASTM E1444-01
Eu, international standard: DIN EN ISO 9934-2-2003
III. Technical Parameters
| Detection range: Part (1), diameter | ≤2500mm; Part (2), length ≤4 meters |
| Electrode spacing | 0~4000mm (adjustable) |
| Coil inner diameter | 15,000mm |
| Circumferential current | AC 0~15000A RMS (with power-off phase controller) |
| Longitudinal magnetic potential | AC 0~18000AT RMS (with power-off phase controller) |
| Voltage | DC 35V |
| Magnetization time | 0~5S |
| Magnetization methods | circumferential magnetization, longitudinal magnetization, and combined magnetization |
| Clamping method | Pneumatic clamping |
| Demagnetization effect | Residual magnetism less than 0.5mT |
| Flaw detection sensitivity | The A1 standard test piece (15 / 50) is clearly displayed |
| Ultraviolet intensity | The intensity at a distance of 380mm from the surface of the workpiece to the ultraviolet bulb is not less than 4000uw/cm2 |
| Air pressure | 0.4~0.8MPa |
| Clamping stroke | 0~50mm |
| The electrode spacing | 4 meters |
| Power supply | Three-phase five-wire AC 380V 50Hz |
| Overall dimensions | 6800 (L) ×2500 (W) ×4000 (H) (mm) |
| Weight | Approximately 5,000 kgs |
V. Inspection Process
Part(1) : Hoisting and loading - Electrode clamping - spraying magnetic suspension - magnetization - Observation - Rotating the part 90 degrees, second inspection - demagnetization - unloading
Part(2) : Hoisting and loading - Electrode clamping - Spraying magnetic suspension - magnetization - Observation - demagnetization - unloading
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