Tuofeng TFW-20G High-Temperature Microcomputer-Controlled Tensile Testing Machine

Overview

The Tuofeng TFW-20G High-Temperature Microcomputer-Controlled Tensile Testing Machine is a dual-module electromechanical system integrating a precision universal testing frame with an independently controlled high-temperature environmental chamber. Engineered for materials science laboratories and industrial R&D centers, it performs standardized uniaxial tensile, compression, bending, and shear tests on metallic alloys, polymer composites, ceramics, and advanced laminates under elevated thermal conditions—up to 300 °C. The system operates on the principle of servo-controlled displacement actuation via a high-rigidity滚珠丝杠 (ball-screw) transmission train, coupled with real-time force feedback from calibrated load cells and high-resolution position tracking via optical encoders. Its modular architecture enables seamless decoupling: the environmental chamber may be used standalone for component-level thermal aging or creep evaluation, while the base testing frame supports ambient-temperature mechanical characterization per ISO 6892-1, ASTM E8/E21, and GB/T 228.1.

Key Features

• High-stability electromechanical drive: AC servo motor paired with precision timing belt and preloaded ball-screw assembly ensures smooth, backlash-free crosshead motion across the full 1000 mm stroke range.
• Force measurement certified to ISO 7500-1 Class 0.5: Dual-range load cell with ±0.5% accuracy over 0.4–100% FS, traceable to national metrological standards.
• Sub-micron displacement resolution: 0.0001 mm encoder-based positioning enables precise strain quantification in low-deformation regimes (e.g., elastic modulus determination).
• Integrated high-temperature chamber: 304 stainless steel inner chamber (300 × 250 × 600 mm standard), PID-controlled heating with ±1 °C uniformity and 0.1 °C digital resolution; external cold-rolled steel housing with powder-coated finish.
• Modular mobility design: Chamber mounted on heavy-duty casters with integrated linear guide rails for repeatable alignment and thermal isolation during setup.
• Hardware-level safety interlocks: Automatic shutdown triggered by overload, specimen rupture, current surge, or thermal excursion beyond setpoint.

Sample Compatibility & Compliance

The TFW-20G accommodates flat, round, and notched specimens per ISO 6892-1 (tensile), ISO 14577 (instrumented indentation), ASTM D638 (plastics), and GB/T 7314 (compression of metallic materials). Specimen grips include pneumatic wedge-action clamps (standard), hydraulic self-tightening jaws (optional), and high-temperature ceramic-faced fixtures rated to 300 °C. All test protocols support audit-ready compliance with GLP and GMP requirements: raw data logging includes timestamped force-displacement traces, environmental chamber temperature profiles, and operator ID metadata. System firmware adheres to ISO/IEC 17025 documentation practices and facilitates traceability for FDA 21 CFR Part 11–aligned validation packages.

Software & Data Management

Control and analysis are executed via Windows-based proprietary software compatible with Windows 7/10/11 (64-bit). The interface provides real-time visualization of load–displacement, stress–strain, and time–temperature–deformation curves. Automated parameter extraction includes yield strength (Rp0.2), ultimate tensile strength (UTS), elongation at break (A%), Young’s modulus (E), and reduction of area (Z%). Curve overlay functionality allows side-by-side comparison of up to eight datasets using user-defined color coding and axis scaling. Raw ASCII output (.csv) and structured XML export ensure interoperability with MATLAB, Python (NumPy/Pandas), and LIMS platforms. Audit trail logs record all user actions—including method edits, calibration events, and report generation—with immutable timestamps.

Applications

• High-temperature mechanical property mapping of aerospace-grade superalloys (e.g., Inconel 718, Ti-6Al-4V) across 25–300 °C.
• Thermo-mechanical fatigue (TMF) pre-screening of polymer matrix composites (PMCs) used in automotive under-hood components.
• Creep rupture testing of refractory ceramics and fiber-reinforced concrete under sustained load at elevated temperatures.
• Validation of weld joint integrity in pressure vessel steels per ASME BPVC Section VIII Div. 2 Annex 3.A.
• Quality control of additive-manufactured metal parts, including post-heat-treated Ti-6Al-4V and AlSi10Mg specimens.
• Research into glass transition effects on thermoplastic elastomers (TPEs) and shape-memory polymers (SMPs).

FAQ

What is the maximum operating temperature of the environmental chamber?
The standard chamber achieves 250 °C continuously; optional configuration extends to 300 °C with upgraded heating elements and insulation.
Can the system perform closed-loop strain control during high-temperature tests?
Yes—when equipped with high-temperature extensometers (e.g., clip-on or non-contact laser types), the controller supports displacement- and strain-controlled ramp-hold profiles per ASTM E2309.
Is third-party calibration certification included with delivery?
Each unit ships with a factory calibration certificate traceable to CNAS-accredited standards; ISO/IEC 17025–accredited field calibration services are available upon request.
Does the software support automated report generation compliant with ISO 17025 requirements?
Yes—templates follow ISO/IEC 17025 Annex A.1 guidelines, embedding instrument IDs, calibration dates, environmental conditions, and statistical uncertainty estimates directly into PDF outputs.
What maintenance intervals are recommended for long-term reliability?
Ball-screw lubrication every 1,000 operational hours; load cell verification annually; chamber heater and sensor calibration biannually—documented in the included Maintenance Logbook.