Tuofeng TFW-307 High-Low Temperature Electronic Universal Testing Machine

Overview

The Tuofeng TFW-307 High-Low Temperature Electronic Universal Testing Machine is a precision-engineered electromechanical system designed for static mechanical property evaluation of metallic and non-metallic materials under controlled thermal environments. It integrates a high-rigidity dual-column load frame with a programmable environmental chamber capable of stable operation from −40 °C to +100 °C, enabling standardized tensile, compression, flexural, shear, peel, and tear testing per ASTM E8/E9/E21/E83, ISO 6892-1, ISO 7500-1, GB/T 228.1, JIS Z 2241, and DIN 50125. The machine employs a closed-loop servo-controlled DC motor drive system with digital load cell feedback, delivering consistent force application and displacement resolution across its full 0.02 N–300 kN range. Its modular architecture supports seamless integration of extensometers, video strain systems, and environmental accessories without recalibration—ensuring traceable, repeatable data acquisition in both ambient and thermally conditioned states.

Key Features

• High-accuracy dual-range load measurement: ±0.5% of reading over 0.4–100% FS, with 1/500,000 full-scale resolution and no range switching required
• Integrated programmable temperature chamber: Stainless steel 304 outer shell and 316 mirror-finish inner lining; silicone-alumina fiber insulation; PID-controlled heating/cooling via compressor-heater hybrid system
• Thermal stability assurance: ±2 °C uniformity within 100 mm axial zone; ≤5 min temperature equilibration time above and below 0 °C
• Full-featured motion control: Precision ball-screw-driven crosshead with optical encoder feedback; position accuracy ±0.5% of reading; travel limit switches and emergency stop circuitry compliant with IEC 60204-1
• Rigid structural design: 380 kg base-weighted frame with 840 mm column spacing and 1000 mm usable vertical stroke—optimized for specimen alignment and lateral stiffness
• Comprehensive safety suite: Leakage current protection, overcurrent circuit breakers, door interlock sensors, and thermal cut-off on chamber heater and compressor

Sample Compatibility & Compliance

The TFW-307 accommodates flat, round, and custom-shaped specimens up to 360 mm wide × 500 mm height (within chamber limits), supporting standard test geometries per ASTM D638 (plastics), ASTM D3039 (composites), ISO 6892-1 (metals), and GB/T 1040 (polymer films). Grips—including wedge-action, pneumatic, and hydraulic options—are interchangeable and calibrated to ISO 7500-1 Class 0.5. All test procedures comply with GLP documentation requirements, and the system supports audit-ready data logging with timestamped metadata. Calibration certificates are traceable to NIM (National Institute of Metrology, China) or equivalent national metrology institutes. Environmental chamber performance meets ISO 16750-4 (automotive thermal cycling) and ASTM D5229 (low-temperature composite testing) specifications.

Software & Data Management

The Windows-based Tuofeng TestMaster™ software provides real-time acquisition, visualization, and analysis of force, displacement, and temperature-synchronized signals. It supports automated calculation of tensile strength, yield point (0.2% offset), modulus of elasticity, elongation at break, compressive yield stress, flexural modulus, and peel adhesion energy. Raw data export is available in CSV, Excel, and XML formats; report templates conform to ISO/IEC 17025 laboratory accreditation standards. The software includes built-in 21 CFR Part 11 compliance modules—user authentication, electronic signatures, audit trails, and immutable data archiving—with optional integration into LIMS environments via OPC UA or TCP/IP protocols.

Applications

This system serves laboratories requiring reproducible mechanical characterization across variable thermal conditions. Typical use cases include: low-temperature ductility assessment of aerospace aluminum alloys (per AMS 4027); high-temperature creep resistance of polymer composites used in EV battery housings; thermal expansion coefficient derivation via constrained tensile testing; validation of adhesive bond integrity in cryogenic piping joints; and quality control of elastomeric seals under cyclic thermal stress. It is routinely deployed in R&D centers of automotive OEMs, polymer compounders, ceramic manufacturers, national metrology institutes, and university materials science departments conducting graduate-level mechanical behavior studies.

FAQ

What temperature ramp rates does the chamber support?
The chamber achieves a maximum heating rate of approximately 3.3 °C/min (to +100 °C in ≤30 min) and cooling rate of ~2.0 °C/min (from ambient to −40 °C in ~60 min), depending on specimen mass and thermal mass loading.
Can the system perform closed-loop strain control during thermal testing?
Yes—when equipped with a high-temperature extensometer (e.g., clip-on or laser-based), the controller supports displacement- or strain-controlled modes with real-time thermal drift compensation.
Is third-party calibration certification included with delivery?
A factory calibration certificate traceable to NIM is supplied. Optional UKAS or DAkkS-accredited calibration services are available upon request.
What safety certifications does the integrated chamber hold?
The chamber complies with CE marking requirements under Machinery Directive 2006/42/EC and Low Voltage Directive 2014/35/EU, including EN 61000-6-2 (EMC immunity) and EN 61000-6-4 (EMC emissions).
Does the software support multi-user role-based access control?
Yes—TestMaster™ implements hierarchical user permissions (administrator, operator, reviewer) aligned with ISO/IEC 17025 clause 6.2.5 and FDA 21 CFR Part 11 §11.200(a).