For high-volume bolt and fastener production, manual magnetic particle inspection can be time-consuming and labor-intensive. An automatic magnetic particle inspection machine integrates feeding, magnetization, inspection, sorting, and demagnetization into one automated process.
NEWK NDT provides customized automatic MPI machines for bolts and fasteners, designed for efficient and consistent magnetic particle testing in industrial production.
Fully Automatic Bolt MPI System
The CNK-5000-AI Automatic Magnetic Particle Inspection Line is specially designed for automated inspection of bolts.
The system integrates:
- Automatic bolt feeding
- Robotic loading and unloading
- Wet magnetic particle application
- Automatic magnetization
- AI vision inspection
- Automatic sorting
- Demagnetization
- Production data collection
The complete process can run automatically with minimal operator intervention.
AI Vision Magnetic Particle Inspection
After magnetization and magnetic particle application, the bolts are rotated for multi-angle image acquisition.
The AI vision system analyzes the inspection images and identifies magnetic particle indications on the component surface.
This helps reduce repetitive manual visual inspection and provides a more consistent inspection process.
For AI-based inspection, the system can be developed and validated using customer-provided qualified and defective samples.
Five-Piece Synchronized Inspection
The CNK-5000-AI can be configured with five synchronized working positions.
Five bolts can be loaded, magnetized, inspected, and sorted in a coordinated cycle, improving production efficiency for large-volume manufacturing.
For the specified configuration, the target inspection cycle is:
≤15 seconds / 5 bolts
including loading, inspection, automatic recognition, transfer, and sorting operations.
Automatic Feeding and Sorting
Unlike conventional vibration bowl feeders, the system can use a step-type plate feeding mechanism, which is suitable for long bolts and helps reduce problems such as entanglement, overlapping, and feeding jams.
After inspection, the system automatically separates qualified and rejected parts. Qualified parts can then pass through the automatic demagnetization unit before collection.
Customized Automatic MPI Equipment
Different bolt manufacturers may have different component dimensions, production speeds, inspection standards, and defect requirements.
NEWK NDT designs customized magnetic particle inspection machines according to the actual application.
Our solutions can be configured for:
- Bolts and fasteners
- Shafts and forged components
- Bearing components
- Railway components
- Other ferromagnetic parts
The machine configuration can be developed according to component drawings, material, dimensions, inspection coverage, production capacity, and required automation level.
Why Choose NEWK NDT?
NEWK NDT is a manufacturer of magnetic particle inspection equipment and automated MPI systems in China.
We provide customized solutions covering the magnetic inspection process, automatic material handling, machine vision, sorting, and demagnetization.
If you are looking for an automatic magnetic particle inspection machine for bolts, send us your component drawings, dimensions, inspection requirements, and production capacity. Our engineering team can develop a suitable MPI solution for your production line.





