CDX-Ⅲ Magnetic Particle Flaw Detector

CDX-Ⅲ Magnetic Particle Flaw Detector
Brand: Mitech
Model: CDX-Ⅲ

Product Overview

The CDX-Ⅲ Magnetic Particle Flaw Detector is a multifunctional, high-precision non-destructive testing (NDT) device designed by MITECH CO., LTD. This device is compact, lightweight, and easy to operate while incorporating multiple detection functions. It supports four probe types (A, D, E, O), enabling magnetic clamp detection, electromagnetic yoke detection, cross magnetic yoke detection, and ring detection. Designed for quality control, safety inspections, and lifespan evaluation, it is widely used in petroleum, chemical, metallurgy, shipbuilding, aviation, railway, and other industrial sectors.

Key Features4

• Multifunctional Detection Capabilities: Equipped with four types of probes to cover different testing requirements.
• Compact & Lightweight Design: Weighing only 5 kg, making it easy to transport and operate.
• High Detection Accuracy: Can clearly detect artificial notches based on Type A 30/100 standard.
• Adjustable Magnetic Yoke: Enhances the practicality and adaptability for different workpieces.
• Enhanced Visualization: Displays defect shape, position, size, and severity based on magnetic field effects.
• Fast & Efficient Detection: Detects flaws between 0.5 mm – 3 mm below the surface, with air hole detection reaching up to 5 mm.
• Accessory Lighting: Integrated lighting system enables effective testing in low-light environments.
• Continuous Operation: Designed for uninterrupted performance without overheating.

Technical Specifications

• Measuring Range: ≥45N (no less than 5 kg)
• Resolution Accuracy: Clearly detects artificial notches based on Type A 30/100 standard
• Working Time: Continuous operation
• Main Unit Weight: 5 kg
• Package Dimensions: 42 × 33.5 × 41 cm
• Total Weight: 14 kg

Applications

The CDX-Ⅲ Magnetic Particle Flaw Detector is widely utilized across industries that require high-precision flaw detection, including:

• Aerospace: Aircraft manufacturing and maintenance
• Oil & Gas: Pipeline integrity assessments and valve inspections
• Automotive & Machinery: Gears, bearings, crankshafts, and high-stress components
• Shipbuilding & Marine: Structural inspections for welded components and anchor chains
• Energy & Power Plants: Turbines, boilers, and pressure vessel evaluations
• Railway & Bridges: Structural flaw assessments and welding inspections
• Manufacturing & Engineering: Heavy machinery, standard components, and petrochemical piping

Working Principle

The CDX-Ⅲ operates by magnetizing the workpiece, generating a strong magnetic field around it. When defects such as cracks or slag inclusions are present, they disrupt the magnetic flux, creating leakage fields. Applying magnetic powder (typically iron oxide) allows the particles to accumulate at the defect location, forming visible traces. This enables inspectors to accurately determine the position, size, shape, and severity of the flaw under proper lighting conditions.

Operating Conditions

• Magnetizing Time: ≤ 3s
• Clearance Time: ≥ 5s
• Voltage Check: Ensure proper voltage levels before use to maintain accuracy and device safety.
• Workpiece Contact: The probe must be in direct contact with the workpiece to ensure optimal magnetization and defect detection.
• Overcurrent Protection Circuit: Prevents overload and excessive temperature rise.
• Environmental Storage: Store in a clean, dry environment free from corrosive materials.
• Overheating Safety: If the detector overheats, stop usage and inspect for possible causes.

Operating Instructions & Precautions

1. Setup & Connection: Connect the device to a stable power source, ensuring proper voltage levels.
2. Probe Placement: Secure the probe on the workpiece before activating magnetization.
3. Flaw Detection: Apply magnetic powder and observe defect accumulation under proper lighting.
4. Timing Considerations: Ensure magnetizing time ≤ 3 seconds and clearance time ≥ 5 seconds to maintain detection accuracy.
5. Overcurrent Protection: The device automatically prevents no-load operation and overheating.
6. Safe Operation: Do not turn off the switch or unplug cables while the magnetizing process is active.
7. Proper Grounding: Ensure the device casing is properly grounded for safe operation.
8. Troubleshooting: If an issue arises that cannot be resolved, contact the manufacturer for assistance.

Maintenance & Care

• Power Indicator Issues: If the power indicator fails, it may be due to fuse damage or an LED issue.
• Magnetizing Indicator Failure: This may indicate a relay connection issue or thyristor damage.
• Storage Precautions: Keep the detector in a dry, dust-free environment to prevent corrosion.
• Voltage Safety: Handle the device carefully during maintenance and high-voltage repairs.
• Periodic Inspection: Regularly check for cable integrity, power stability, and probe function.