Hao Tianxin ST-015A High-Temperature Aging Test Chamber for Rubber Tubing

Overview

The Hao Tianxin ST-015A High-Temperature Aging Test Chamber is an industrial-grade thermal aging system engineered for accelerated life testing of elastomeric materials—particularly rubber tubing—under controlled elevated temperature conditions. It operates on the principle of forced-air convection heating and balanced temperature control (BTC), ensuring stable thermal exposure across the entire working volume. Designed in accordance with international environmental test standards—including GB/T 2423.2–2008 (equivalent to IEC 60068-2-2 Ed. 5.0 for high-temperature testing), GJB 150.3A–2009 (military-grade thermal endurance validation), and JB/T 5520–1991 (industrial drying and aging equipment specifications)—this chamber supports deterministic evaluation of material degradation mechanisms such as oxidation, chain scission, and cross-link density changes over time. Its application scope extends to R&D laboratories, quality assurance departments in automotive hose manufacturing, aerospace component suppliers, and third-party certification bodies conducting compliance verification per ISO 1431 (ozone and heat resistance of rubber) and ASTM D573 (rubber—deterioration by heat aging).

Key Features

• Robust chamber architecture with modular welded SUS304 stainless steel interior and external powder-coated steel frame for long-term corrosion resistance and thermal fatigue resilience.
• Ultra-fine glass fiber insulation (≥100 mm thickness) minimizing thermal loss and enhancing energy efficiency during extended dwell cycles.
• Pt100 Class A platinum resistance sensors mounted at multiple spatial locations for precise, traceable temperature monitoring and uniformity verification.
• Digital PID temperature controller with auto-tuning capability, linear compensation algorithm, and dual LED display showing both setpoint and real-time chamber temperature.
• High-efficiency axial flow circulation fan integrated into a fully sealed BTC (Balance Temperature & Circulation) air path, delivering ±2.0 °C uniformity and ±0.5 °C short-term fluctuation across the working volume.
• Zero-crossing SCR (Silicon Controlled Rectifier) power regulation for heater banks, enabling smooth, contactless heating control and eliminating electromagnetic interference with adjacent instrumentation.
• Interlocked door-heater-fan safety logic (optional configuration) preventing thermal shock and minimizing temperature recovery lag during frequent sample loading/unloading.

Sample Compatibility & Compliance

The ST-015A accommodates full-size rubber hoses, braided assemblies, molded seals, and extruded profiles up to Ø150 mm × 1200 mm (L) within its standard aging room configuration. Two adjustable stainless steel wire mesh shelves provide flexible vertical staging while maintaining unrestricted airflow. Optional accessories—including 50 mm diameter test ports, external data logging interfaces, forced exhaust ducting, and mobile trolleys—support integration into GLP-compliant workflows and automated test sequences. All electrical and thermal performance metrics are validated per GB/T 2423.2–2008 Annex B (temperature uniformity mapping protocol) and align with the technical requirements of ISO/IEC 17025 accredited calibration laboratories. The chamber’s structural sealing integrity—achieved via high-temperature silicone rubber gaskets rated to 350 °C—ensures zero ambient air infiltration during operation, critical for reproducible oxidative aging kinetics.

Software & Data Management

While the base ST-015A operates via embedded digital controller with manual parameter input, optional RS485/Modbus RTU or Ethernet-enabled communication modules enable remote supervision and data acquisition using industry-standard SCADA platforms (e.g., Ignition, WinCC, LabVIEW). Time-stamped temperature logs—including setpoint, measured value, deviation, and alarm status—are exportable in CSV format for audit trails required under FDA 21 CFR Part 11 (when paired with compliant software layers) and internal QA documentation per ISO 9001 Clause 8.5.2. The controller supports dual timer modes: 1–999 minutes (short-cycle stress screening) and 1–999 hours (long-term aging studies), with automatic shutdown and audible alert upon completion. All firmware revisions comply with IEC 61000-4 EMC immunity standards and undergo factory verification against NIST-traceable reference thermometers.

Applications

• Accelerated thermal aging of EPDM, NBR, silicone, and fluorocarbon rubber tubing per SAE J2045 and ISO 6942.
• Pre-compliance screening of automotive coolant, brake, and fuel delivery hoses prior to OEM qualification testing.
• Validation of shelf-life predictions for medical-grade silicone catheters under ISO 10993-12 accelerated aging protocols.
• Material comparison studies evaluating antioxidant package efficacy in compounded elastomers.
• Process validation of vulcanization post-cure stability in tire cord adhesion systems.
• Environmental stress screening (ESS) for electronic enclosures with rubber gasket interfaces per MIL-STD-810H Method 501.7.

FAQ

What standards does the ST-015A meet for thermal aging validation?

It complies with GB/T 2423.2–2008 (identical to IEC 60068-2-2), GJB 150.3A–2009, and JB/T 5520–1991. Optional calibration certificates include ISO/IEC 17025 accreditation upon request.
Can the chamber be used for continuous 300 °C operation?

The maximum rated temperature is 300 °C, but sustained operation above 280 °C requires derating of thermal cycling frequency and periodic verification of sensor drift and gasket integrity.
Is the temperature uniformity verified across the full working volume?

Yes—uniformity is mapped per GB/T 2423.2–2008 Annex B using nine Pt100 probes; results are documented in the factory acceptance test (FAT) report supplied with each unit.
Does the controller support data export for regulatory audits?

Standard models log internal runtime data; RS485/Ethernet variants enable real-time export to LIMS or ELN systems with configurable timestamping and user-access controls.
What maintenance intervals are recommended for long-term reliability?

Fan bearings and door gaskets should be inspected every 12 months; heating elements and SSRs undergo functional verification during annual calibration—full service kits and OEM spare parts are available directly from Hao Tianxin.