Jiubin JB-20B Radiator Internal Corrosion Test System
| Brand | Jiubin Instruments |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | JB-20B |
| Pricing | Available Upon Request |
| Operating Pressure Range | 0.05–0.5 MPa (adjustable) |
| Coolant Flow Rate | Up to 666 L/min (40 t/h, continuously adjustable) |
| Temperature Range | Ambient to 125 °C (±2 °C accuracy) |
| Heating Rate | ≤12 min to reach setpoint |
| Control Interface | Dual-mode — Industrial Touchscreen HMI & PC-based Supervisory Software |
| Specimen Capacity | 1–3 test coupons simultaneously |
| Total Specimen Chamber Volume | 20 L |
| Time Logging Resolution | 1 second (max duration: 9999 hours per phase) |
| Chamber Dimensions (L×W×H) | 1500 × 1000 × 1000 mm |
| Construction | 316L stainless steel wetted parts |
| Thermal Insulation | Full external mineral wool cladding |
| Temperature Control Algorithm | PID with auto-tuning capability |
| Safety Interlocks | Low-level coolant detection, overtemperature cutoff, door-open sensor, leak-detection shutdown, end-of-test auto-termination |
Overview
The Jiubin JB-20B Radiator Internal Corrosion Test System is an engineered bench-scale simulation platform designed to replicate the thermo-hydrodynamic and electrochemical conditions experienced by aluminum and copper alloy heat exchanger components in automotive engine cooling circuits. It operates in strict conformance with ASTM D2570 – “Standard Test Method for Simulated Service Corrosion Testing of Engine Coolants,” enabling quantitative assessment of corrosion inhibition performance under controlled pressure, flow, and thermal cycling regimes. Unlike static immersion tests, this system subjects specimens to dynamic coolant circulation at elevated temperatures and regulated backpressure—mimicking real-world pump-driven coolant flow through radiator cores, heater cores, and cylinder head passages. The test chamber maintains a sealed, inert-atmosphere-compatible environment where dissolved oxygen concentration, pH stability, and ion transport kinetics are preserved across extended exposure durations (up to 9999 hours). Its modular architecture supports both single-specimen qualification and comparative multi-alloy screening, making it suitable for coolant formulation R&D, OEM specification validation, and supplier quality assurance programs.
Key Features
- Programmable pressure control (0.05–0.5 MPa) via precision servo-regulated backpressure valve, enabling simulation of high-altitude or turbocharged engine cooling loop conditions.
- High-capacity magnetic-drive centrifugal pump delivering stable, pulse-free flow up to 666 L/min with digital flowmeter feedback and closed-loop rate modulation.
- Triple-zone PID temperature control with independent heating elements and Pt100 Class A sensors ensures ±2 °C uniformity across the full 20-L specimen chamber volume.
- Dual-control interface: intuitive 10.1″ industrial touchscreen HMI for local operation, plus Ethernet-enabled PC software supporting script-based test sequencing, real-time parameter logging, and alarm history export.
- Integrated safety interlock matrix compliant with IEC 61508 SIL 2 requirements—including redundant level switches, thermocouple fault detection, mechanical door limit switches, and real-time leak monitoring via differential pressure decay algorithm.
- Full 316L stainless steel fluid path (including reservoir, piping, pump housing, and specimen holder), eliminating galvanic contamination and ensuring compatibility with organic acid technology (OAT), hybrid OAT (HOAT), and silicate-based coolants.
- Front-access service design with removable side panels and tool-less component mounting—facilitating rapid inspection of gaskets, seals, and filter elements without system depressurization.
Sample Compatibility & Compliance
The JB-20B accommodates standard ASTM G31-compliant flat coupon geometries (e.g., 75 × 50 × 3 mm Al 3003, Cu C11000, solder alloys) as well as custom-fabricated tube sections and finned heat sink mock-ups. Specimens are mounted in electrically isolated holders to prevent stray current interference during potential monitoring. All wetted materials meet ASTM A240 and EN 10088-1 specifications for corrosion-resistant austenitic stainless steels. The system satisfies functional requirements of ASTM D2570, ISO 11202 (coolant compatibility), and SAE J1034 (engine coolant corrosion testing). Data acquisition and audit trails comply with FDA 21 CFR Part 11 principles when operated with validated software configuration—supporting GLP and IATF 16949-aligned laboratory workflows.
Software & Data Management
JB-Link™ supervisory software (v3.2+) provides ISO/IEC 17025 traceable data handling: time-stamped parameter logs (pressure, flow, temperature, runtime phases) are stored in encrypted SQLite databases with SHA-256 checksums. Users define multi-step test profiles—including ramp/soak sequences, flow-pressure correlation sweeps, and conditional branching based on sensor thresholds. Export options include CSV, PDF test reports with embedded calibration certificates, and XML files compatible with LIMS integration. Audit trail functionality records all user actions (login/logout, parameter edits, manual overrides) with operator ID and timestamp—meeting ALCOA+ (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available) data integrity criteria.
Applications
- Validation of corrosion inhibitor packages in ethylene glycol/water and propylene glycol/water coolant formulations.
- Accelerated lifetime testing of aluminum radiator cores under cyclic thermal stress (e.g., 60–120 °C ramps).
- Intermetallic galvanic corrosion evaluation between dissimilar metals (e.g., Al/Cu joints, brass fittings, soldered seams).
- Performance benchmarking of extended-life coolants against OEM specifications (e.g., GM 6277M, Ford WSS-M97B57-A2, VW TL 774 D).
- Root cause analysis of field failures involving pitting, crevice corrosion, or liner delamination in plastic-aluminum composite radiators.
FAQ
Does the JB-20B support automated data export to LIMS?
Yes—via configurable ODBC drivers and scheduled FTP/SFTP transfers using industry-standard file schemas (ASTM E1382-compliant).
Can test parameters be modified during active operation?
Yes—flow rate, temperature setpoint, and pressure target may be adjusted in real time without interrupting the test sequence; all changes are logged with operator ID and timestamp.
Is the system suitable for testing organic acid technology (OAT) coolants?
Yes—its 316L construction and absence of copper or zinc components prevent catalytic degradation of carboxylate inhibitors; recommended for ASTM D6210-compliant OAT validation.
What maintenance intervals are specified for pump seals and temperature sensors?
Pump magnetic couplings require inspection every 2000 operational hours; Pt100 sensors are calibrated annually per ISO/IEC 17025 procedures using NIST-traceable dry-block calibrators.
How is coolant chemistry monitored during long-duration tests?
The system includes optional ports for inline pH/conductivity probes (not included) and scheduled sampling valves compliant with ASTM D1120 sampling protocols.
