NCS NC-MT Series Magnetic Particle Inspection Equipment
| Brand | NCS |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Manufacturer |
| Country of Origin | China |
| Model | NC-MT Series |
| Pricing | Available Upon Request |
Overview
The NCS NC-MT Series Magnetic Particle Inspection (MPI) Equipment is a stationary or semi-portable electromagnetic non-destructive testing system engineered for the reliable detection of surface and near-surface discontinuities in ferromagnetic materials. Based on the principle of magnetic flux leakage, the system magnetizes the test specimen—typically steel pipes, forgings, castings, or welded components—and applies ferrous magnetic particles (dry powder or wet suspension) to visualize leakage fields at flaw sites. This method provides high-contrast, direct visual indication of cracks, seams, laps, and other planar defects without material removal or structural alteration. Designed for industrial quality control environments, the NC-MT series delivers consistent field strength, controlled current waveform output (AC, DC, or HWDC), and repeatable magnetization geometry—critical for compliance-driven inspection workflows in pipeline manufacturing, pressure vessel fabrication, and aerospace component maintenance.
Key Features
- Configurable magnetization modes: alternating current (AC) for surface-breaking defect sensitivity, direct current (DC) or half-wave rectified DC (HWDC) for deeper subsurface detection
- Integrated current regulation with digital ammeter feedback and ±3% output stability under load variation
- Robust electromagnetic yoke and coil assemblies rated for continuous duty cycle operation up to 40°C ambient
- Compliance-ready design featuring built-in timer-controlled demagnetization cycles and residual field verification capability
- Modular construction supporting both longitudinal (coil-based) and circular (yoke or head-shot) magnetization configurations
- IP54-rated enclosure for resistance to dust ingress and incidental moisture exposure in workshop environments
Sample Compatibility & Compliance
The NC-MT Series accommodates cylindrical specimens—including seamless and welded steel pipes ranging from Ø10 mm to Ø610 mm outer diameter—with adjustable coil inner diameters and programmable current ramp profiles. It supports both fluorescent and non-fluorescent particle media compliant with ASTM E1444/E709 specifications. The equipment meets all mandatory requirements of Chinese national standards GB 3721–1983 (Magnetic Particle Testing Equipment), JB/T 8290–2011 (Magnetic Particle Testing Apparatus for Industrial Use), and GB/T 15822.1–2005 through GB/T 15822.3–2005 (Magnetic Particle Testing Methods). While not certified to ISO 9934 or EN 1369, its operational parameters and documentation architecture align with GLP-aligned inspection recordkeeping practices, including traceable current settings, exposure duration logs, and operator ID tagging via optional external data capture interfaces.
Software & Data Management
The NC-MT Series operates as a hardware-centric inspection platform with analog/digital hybrid controls; it does not incorporate embedded firmware-based software or touchscreen HMI. However, it features standardized 0–10 V analog output ports and RS-485 Modbus RTU interface for integration into centralized NDT management systems. When paired with third-party data acquisition modules (e.g., LabVIEW-compatible DAQ units or SCADA gateways), full audit trails—including magnetizing current magnitude, duration, polarity, and demagnetization sequence—can be archived in CSV or SQL formats. All calibration records, daily sensitivity checks (using AS 5371 shims or QQI strips), and equipment verification logs adhere to internal QA protocols compatible with ISO/IEC 17025 laboratory accreditation frameworks.
Applications
- In-line inspection of carbon steel and low-alloy steel pipes during API 5L production and hydrostatic testing phases
- Post-weld inspection of circumferential girth welds in oil & gas transmission pipelines
- Periodic in-service examination of boiler tubes, heat exchanger bundles, and turbine shafts per NBIC Part 4 guidelines
- Acceptance testing of forged valve bodies, flanges, and pump housings prior to surface finishing
- Verification of grinding-induced microcracks in bearing races and gear blanks after heat treatment
FAQ
Does the NC-MT Series support automated scanning or robotic integration?
No—the NC-MT Series is a manually operated, operator-dependent MPI station. Automated scanning requires external motion systems (e.g., pipe rotators or linear traversing carriages) interfaced via its analog/Modbus I/O.
Is certification to ASTM E1444 or ISO 9934 provided with the unit?
The equipment complies with functional performance criteria referenced in those standards but does not carry formal third-party certification. Users must perform initial and periodic verification per Section 6 of ASTM E1444 using certified reference standards.
Can the system be used for wet horizontal particle inspection (WHPI)?
Yes—when equipped with a compatible wet bath station (sold separately), the NC-MT Series supplies stable AC/DC/HWDC current to energize head-shot or coil circuits during immersion or flow-through particle application.
What is the maximum recommended part length for longitudinal magnetization?
For optimal field uniformity, parts exceeding 1200 mm in length require segmented magnetization or use of a multi-turn coil configuration; technical guidance is available in the NCS Application Note AN-MT-02.
Are spare coils and yokes available for custom geometries?
Yes—NCS offers OEM-designed auxiliary magnetizing fixtures, including pancake coils, articulated yokes, and central conductors, all calibrated and documented per JB/T 8290–2011 Annex C.
