Hengyi HY(RW)-300HA Heat Deflection Temperature and Vicat Softening Temperature Tester
| Brand | Hengyi |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Model | HY(RW)-300HA(RB) |
| Temperature Range | Ambient to 300 °C |
| Heating Rate Options | (120 ± 10) °C/h, (12 ± 1) °C/6 min, (50 ± 5) °C/h, (5 ± 0.5) °C/6 min |
| Temperature Display Resolution | 0.1 °C |
| Temperature Control Accuracy | ±0.5 °C |
| Deflection Measurement Range | 0–1.5 mm |
| Maximum Deflection Error | ±0.001 mm |
| Specimen Stations | 3 |
| Load Rod + Platter Mass | 68 g |
| Heating Medium | Methyl Silicone Oil (200 cSt) or Transformer Oil |
| Cooling Method | Natural cooling above 150 °C |
| Heating Power | 4 kW |
| Dimensions (W × D × H) | 528 × 545 × 370 mm |
Overview
The Hengyi HY(RW)-300HA Heat Deflection Temperature (HDT) and Vicat Softening Temperature (VST) Tester is a precision-controlled thermal-mechanical testing system engineered for standardized determination of thermomechanical behavior in rigid and semi-crystalline polymeric materials. It operates on two distinct ASTM- and ISO-aligned test principles: (1) heat deflection under flexural load (ASTM D648 / ISO 75), where a rectangular specimen is subjected to a specified bending stress while heated at a controlled rate until a defined deflection (0.25 mm or 0.32 mm) is reached; and (2) Vicat softening point (ASTM D1525 / ISO 306), wherein a needle of 1 mm² cross-section penetrates the specimen surface under a fixed load (10 N or 50 N) as temperature rises linearly. The instrument employs a PLC-based closed-loop temperature control architecture with real-time feedback from calibrated Pt100 sensors, ensuring traceable thermal ramping and high reproducibility across sequential tests.
Key Features
- Triple independent test stations enable concurrent evaluation of up to three specimens—reducing throughput time and improving inter-batch comparability.
- Four selectable heating rates conform to multiple international standards: (120 ± 10) °C/h and (50 ± 5) °C/h for HDT; (12 ± 1) °C/6 min and (5 ± 0.5) °C/6 min for VST—each digitally preset and validated per calibration protocol.
- High-resolution linear displacement transducers (LVDTs) deliver sub-micron resolution (±0.001 mm) over a full 0–1.5 mm range, synchronized with thermal acquisition at 1 Hz sampling frequency.
- Dual-mode cooling system: passive convection cooling above 150 °C; programmable water-cooling initiation below 150 °C ensures rapid thermal recovery without thermal shock to bath media or fixtures.
- Integrated thermal bath accommodates methyl silicone oil (200 cSt) or transformer oil—selected for optimal viscosity-temperature stability, minimal oxidation, and compatibility with long-duration elevated-temperature operation.
- PLC-driven automation includes auto-hold at target temperature, end-of-test shutdown, real-time curve plotting, and direct thermal-deflection data export via RS232/USB interface.
Sample Compatibility & Compliance
The HY(RW)-300HA supports standard-compliant specimens per ISO 75-2, ISO 306, GB/T 1633, GB/T 1634, and GB/T 8802—including injection-molded bars (80 × 10 × 4 mm), extruded rods, and compression-molded plaques. It accommodates common thermoplastics (e.g., ABS, PC, PP, PA6/66), thermosets (epoxy, phenolic), elastomeric composites, and electrically insulating polymers used in automotive, aerospace, and electrical enclosures. All operational parameters and reporting outputs align with GLP documentation requirements. The system’s temperature uniformity profile (< ±0.8 °C across bath volume) and deflection repeatability (RSD < 0.8% at 100 °C) meet internal validation criteria for ISO/IEC 17025-accredited laboratories.
Software & Data Management
The embedded controller provides intuitive menu navigation, password-protected method storage, and audit-trail logging of all operator actions, parameter changes, and test events. Optional PC-based software (sold separately) enables advanced analysis: multi-curve overlay, derivative dT/dt visualization, automatic pass/fail flagging against specification limits, and PDF report generation compliant with FDA 21 CFR Part 11 requirements—including electronic signatures, time-stamped metadata, and immutable raw-data archiving. Export formats include CSV, XML, and .tdms for integration into LIMS or enterprise QA systems.
Applications
- Quality control of incoming polymer resins and compounded pellets prior to extrusion or molding.
- Thermal stability benchmarking during formulation development of flame-retardant or high-heat-resistant grades.
- Regulatory submission support for medical device housings (ISO 10993-12) and automotive interior components (SAE J2334).
- Evaluation of aging effects after thermal cycling or UV exposure—paired with post-test DSC or TMA correlation.
- Teaching laboratory use for undergraduate polymer engineering courses requiring hands-on ISO-standardized testing methodology.
FAQ
What standards does the HY(RW)-300HA fully support?
It meets the thermal control, dimensional accuracy, and procedural requirements of ISO 75-1/2/3 (HDT), ISO 306 (VST), ASTM D648, ASTM D1525, GB/T 1633, GB/T 1634, and GB/T 8802.
Can the instrument be validated for ISO/IEC 17025 accreditation?
Yes—its documented temperature uniformity, deflection measurement uncertainty budget, and traceable Pt100 sensor calibration certificates support full metrological validation per ILAC-G8 and EURACHEM guidelines.
Is external water chiller integration supported?
The unit includes a dedicated inlet/outlet port and pressure-sensing interlock for seamless integration with industrial recirculating chillers (recommended for >50 daily cycles).
How is load calibration performed for Vicat testing?
Standard weights (50 N and 10 N) are supplied; periodic verification follows ISO 9001 Annex A.8 using certified mass standards and lever-arm ratio documentation.
Does the system support automated data backup?
Local USB storage and optional network share mapping allow scheduled backups of test logs, curves, and reports—configurable via admin-level settings.
