"CDG-2000 Fluorescent Magnetic Particle Inspection Machine" is a low-voltage AC electromagnetic integrated magnetic particle inspection equipment produced by our company. It can perform circumferential, longitudinal, and composite magnetization as well as automatic demagnetization on inspection parts, featuring power-off phase control functionality. It ensures no missed inspections during AC magnetization and is suitable for both continuous and residual magnetism inspection methods. It can carry out a series of inspection processes including inserting, clamping, spraying magnetic suspension fluid, rotating, magnetizing, and releasing.
The main circuit of this equipment employs a thyristor stepless voltage regulation circuit, featuring low noise, reliable performance, and long lifespan. It is fully equipped with the necessary functions for magnetic particle inspection of ferromagnetic parts, capable of detecting extremely minute defects such as cracks, inclusions, etc., on the surface and near the surface of the inspected parts, caused by casting, forging, quenching, grinding, fatigue, and other factors.
Equipment Testing Object and Scope:
Equipment is capable of full surface fluorescent magnetic particle inspection for various shaft and bar workpieces with lengths up to 3000mm and diameters up to 100mm.
The circumferential magnetization of the equipment can be checked using direct current to inspect longitudinal and near-surface defects on the workpiece.
Vertical magnetization employs magnetizing coils to inspect the lateral and near-surface defects of workpieces.
Equipment Manufacturing Standards and Bases
The Fluorescent Magnetic Particle Inspection Machine conforms to the standards of JB/T8290—1998 "Magnetic Particle Inspection Machines", GB/T15822.3-2005/ISO9934-3:2002 "Magnetic Particle Testing", and the Technical Agreement signed by both parties.
Technical specifications required:
Weekly directional magnetization: AC0-2000A (RMS) continuously adjustable, with power-off phase control.
Vertical Magnetization: AC 0-18000AT (RMS) continuously adjustable, with power-off phase control.
Magnetization Principle: Electromagnetic yoke method
Magnetization Methods: Single weekly magnetization, single longitudinal magnetization, composite magnetization.
Demagnetization Method: Automatic demagnetization with AC 0-18,000AT (rms) attenuation
Demagnetization Effect: The residual magnetism on the workpiece is less than 159 A/m (2 GS) after demagnetization.
Electrode spacing: Continuously adjustable from 0-700mm.
Erosion Detection Sensitivity: In accordance with the People's Republic of China's Machinery Industry Standard JB/T6065-92 "Standard Test Pieces for Magnetic Particle Erosion Detection," the A-Type 2 test piece is used for testing, and clear indications are displayed in any direction of the workpiece.
Remanence stability: The residual magnetism error on the workpiece after magnetization is not greater than ±5%.
Air Pressure: 0.4-0.8 Mpa; Clamping Method: Pneumatic Clamping
Operating Environment: Temperature -10℃ to +40℃, Relative Humidity ≤85%
Storage Environment: Temperature 20°C to +60°C, relative humidity ≤70%, free from corrosive gases, dust, and strong high-frequency electromagnetic pollution.
UV Intensity: At a distance of 380mm from the workpiece, the illuminance is greater than or equal to 1000 uW/cm².
Power: Three-phase four-wire, 380V±10%, 50Hz, approximately 100A.
Process Flow
Loading — Clamp — Spray and Rotate — Magnetize — Observe Rotation — Demagnetize — Release — Unload