Tongda XXG-1605/2005/2505/3005/3505 Portable Ceramic-Structured X-ray Radiographic Inspection Systems

Overview

The Tongda XXG-series portable X-ray radiographic inspection systems are engineered for high-reliability field-based non-destructive testing (NDT) of metallic welds, castings, pipelines, pressure vessels, and structural components. These systems utilize a corrugated ceramic-insulated X-ray tube — a design that integrates high-voltage insulation, compact geometry, and enhanced mechanical robustness into a single monolithic structure. Unlike conventional glass-envelope or metal-ceramic hybrid tubes, the corrugated ceramic architecture delivers superior thermal dissipation, reduced micro-arc risk under vibration, and extended operational lifetime (>5,000 h typical at rated load). The generator employs constant-potential high-frequency inverter technology to ensure stable kV/mA output with ≤1% ripple, enabling consistent image contrast and quantitative density resolution across varying ambient conditions. Designed for compliance with ISO 5579:2019 (Radiographic testing — General principles for radiographic examination of metallic materials) and ASTM E94/E1742 (Standard Guide for Radiographic Examination), these units support both film-based and digital detector array (DDA) workflows.

Key Features

• Corrugated ceramic X-ray tube: Enables higher voltage stability (up to 350 kV), lower focal spot drift, and improved shock/vibration resistance — critical for mobile and offshore NDT applications.
• Modular lightweight generator design: Weighing from 14.5 kg (XXG-1605) to 38 kg (XXG-3505), each model features an integrated high-frequency inverter, oil-free cooling, and IP54-rated enclosure for dust/moisture resistance.
• Precision focal spot control: Five standard models offer calibrated focal sizes (1.2×1.2 mm to 2.5×2.5 mm) optimized for spatial resolution vs. penetration trade-offs per ASTM E2737.
• Fixed 40° ±5° conical beam geometry: Ensures repeatable geometric unsharpness (Ug) and uniform exposure field coverage without collimator reconfiguration.
• Real-time kV/mA monitoring with analog + digital interface: Supports external dose logging and integration with radiographic quality management software compliant with ISO 9001 and ASNT SNT-TC-1A documentation requirements.

Sample Compatibility & Compliance

These systems are validated for radiographic inspection of ferrous and non-ferrous alloys up to 60 mm A3 steel equivalent thickness. Compatible with industrial film (ASTM E1815 Class I–III), computed radiography (CR) phosphor plates (ISO 17636-2:2022), and flat-panel detectors (IEC 62495). All models meet electromagnetic compatibility (EMC) requirements per IEC 61000-6-3/6-4 and carry CE marking under the EU Machinery Directive 2006/42/EC. Radiation safety conforms to IEC 61331-1 (Protective devices against diagnostic medical X-radiation) and national regulatory limits for portable X-ray emitters (e.g., China’s GBZ 130-2020, US NRC 10 CFR Part 20). Optional lead-lined carrying cases and remote trigger cables facilitate ALARA-compliant operation.

Software & Data Management

While the base hardware operates as a standalone radiographic source, Tongda provides optional PC-based acquisition software (Tongda RIS v3.2) supporting DICOM SR export, exposure parameter logging, and audit trail generation aligned with FDA 21 CFR Part 11 and ISO/IEC 17025 traceability requirements. The system records timestamped kV, mA, exposure time, tube temperature, and cumulative tube-on hours — all exportable via USB or RS-232 to laboratory information management systems (LIMS). Firmware updates maintain compatibility with evolving DDA manufacturers’ SDKs (e.g., Varex, Teledyne DALSA, Canon).

Applications

• In-service pipeline girth weld inspection in oil & gas transmission corridors.
• Field verification of aerospace component castings and turbine blade root attachments.
• Quality assurance of railway axle and bogie frame welds during maintenance depots.
• Pre-commissioning radiography of offshore platform structural nodes under ISO 19901-6.
• Educational use in NDT training centers requiring portable, low-infrastructure X-ray sources compliant with EN 473/ISO 9712 Level II syllabi.

FAQ

What radiation safety certifications do these units hold?

All XXG-series generators comply with IEC 61331-1 for primary barrier performance and are type-tested per national regulations including GBZ 130-2020 (China), ARPANSA RPS C-1 (Australia), and carry EU CE marking for portable X-ray equipment.
Can the XXG-3505 be used with digital radiography detectors?

Yes — its stable 350 kV output and low ripple (<0.8%) meet the dynamic range and linearity requirements of IEC 62495-certified flat-panel detectors; recommended minimum SID is 600 mm for optimal DQE.
Is tube replacement possible in the field?

The corrugated ceramic tube is sealed and non-serviceable; however, full generator exchange is supported under Tongda’s 12-month limited warranty and extended service contracts include certified recalibration and source strength verification.
How does the corrugated ceramic design improve reliability over standard metal-ceramic tubes?

The continuous corrugated profile eliminates discrete brazed joints, reducing thermal stress concentration points and mitigating microcrack propagation under cyclic thermal loading and mechanical shock — validated per MIL-STD-810G Method 514.6 vibration profiles.
Are custom beam filtration options available?

Yes — optional 0.5–2.0 mm Cu or 1.0–3.0 mm Al filters can be installed upstream of the port to tailor HVL and reduce scatter for high-contrast weld evaluation per ISO 17636-1 Annex B.