Tuofeng TFW-77 Advanced Electromechanical Tensile Testing Machine
| Brand | Tuofeng |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Model | TFW-77 |
| Instrument Type | Electromechanical Universal Testing Machine |
| Maximum Test Load | 200 kN |
| Force Measurement Range | 1 kg to 200 kN (0.2%–100% FS) |
| Force Accuracy | ±0.5% of reading |
| Crosshead Travel | 1000 mm |
| Displacement Resolution | 0.001 mm |
| Control System | PC-based closed-loop servo control |
| Drive System | Imported servo motor with precision worm-gear reducer |
| Lead Screw | High-precision preloaded ball screw |
| Effective Test Width | 600 mm (customizable) |
| Speed Range | 0.001–500 mm/min (infinitely variable) |
| Position Measurement | Optical encoder |
| Displacement Accuracy | ±0.005% of reading |
| Strain Measurement | Optional extensometer or large-deformation sensor (ASTM E83 / ISO 9513 compliant) |
| Safety Protection | Dual-limit electronic stops, emergency stop button, overload protection (110% of rated load), automatic return after test |
| Software | Multi-language (English, Simplified/Traditional Chinese), compliant with ASTM E4, ISO 6892-1, GB/T 228.1, GB/T 16491, JJG 475 |
| Data Output | Stress–strain, load–displacement, load–time, strain–time curves |
| Compliance | Meets ISO 16840, ASTM D638/D790/D143/D3039, GB/T 16491–2008, JJG 475–2008, GLP-ready audit trail (optional) |
Overview
The Tuofeng TFW-77 Advanced Electromechanical Tensile Testing Machine is a high-precision universal testing system engineered for static mechanical property characterization of metallic, polymeric, composite, and ceramic materials under uniaxial loading conditions. Based on closed-loop servo-controlled electromechanical actuation, the system applies controlled displacement or load to specimens while continuously measuring force, displacement, and—when equipped with optional extensometry—true strain. Its architecture adheres to fundamental principles defined in ISO 6892-1 (metallic materials – tensile testing) and ASTM E4 (load verification of testing machines), ensuring traceable, repeatable, and standards-compliant mechanical data acquisition across R&D laboratories, QC departments, and third-party certification bodies.
Key Features
- High-stiffness dual-column frame with reinforced base and crosshead assembly, minimizing deflection during high-load testing up to 200 kN.
- Imported servo motor coupled with a self-locking worm-gear reducer and preloaded ground ball screw—delivering smooth, backlash-free motion and long-term positional stability.
- Force measurement via high-linearity, temperature-compensated load cell with internal digital filtering; calibrated to ±0.5% accuracy over full scale (1 kg–200 kN).
- Displacement resolution of 0.001 mm achieved through high-resolution optical encoder integrated into the drive train—ensuring sub-micron repeatability in stroke tracking.
- Dual-speed crosshead control (fast jog + fine positioning) with programmable return-to-start function post-test, supporting high-throughput batch operation.
- Comprehensive safety architecture: hardware-based electronic limit switches, redundant emergency stop circuitry, real-time overload detection (>110% FS), and automatic shutdown with audible/visual alerts.
- Modular extensometry interface supporting both clip-on axial extensometers (per ISO 9513 Class 1) and non-contact video extensometers for surface strain mapping (optional upgrade).
Sample Compatibility & Compliance
The TFW-77 accommodates standardized and custom geometries—from ASTM E8 round bars and flat coupons to ISO 6892 dog-bone specimens, ASTM D638 plastic tensile bars, and GB/T 228.1 sheet-type samples—via interchangeable grips (pneumatic, wedge, hydraulic, or vise-type). It supports compression testing per ASTM C39/C109, three- and four-point bending per ASTM D790, shear per ASTM D5379, peel per ASTM D903, and tear per ASTM D624. The system meets mandatory metrological requirements outlined in JJG 475–2008 (verification regulation for electronic universal testers) and structural design compliance per GB/T 16491–2008. Full traceability is maintained through NIST-traceable calibration certificates (available upon request), and software audit trails satisfy FDA 21 CFR Part 11 requirements when configured with electronic signature and user access control modules.
Software & Data Management
The Windows-based Tuofeng TestSuite v5.2 provides full GLP/GMP-aligned test execution and reporting. It supports multiple control modes—including load-controlled, displacement-controlled, strain-controlled, and hold (constant load/displacement) protocols—with real-time PID tuning. All raw data (force, displacement, time, extensometer output) are sampled at ≥1 kHz and stored in encrypted binary format with metadata embedding (operator ID, sample ID, environmental conditions, calibration date). Curve overlays, statistical analysis (min/max/mean/std dev across batches), and customizable report templates (PDF/Excel) are natively supported. Language localization includes English, Simplified Chinese, and Traditional Chinese; unit systems cover SI, imperial, and CGS. Data export complies with ASTM E1434 and ISO/IEC 17025 documentation requirements. Firmware and software updates are delivered remotely with version-controlled changelogs.
Applications
This system serves as a primary mechanical characterization platform across regulated and industrial sectors. In metallurgy and steel production, it validates yield strength, ultimate tensile strength, and reduction of area per ISO 6892-1 and GB/T 228.1. Aerospace suppliers use it for qualifying titanium alloys and aluminum composites under ASTM B557 and AMS 2304. Polymer labs apply it to determine modulus, ductility, and creep behavior per ISO 527 and ASTM D638. Automotive Tier-1 suppliers perform joint strength validation (spot welds, adhesives) per SAE J2742 and ISO 14272. Construction material labs rely on it for rebar testing (GB/T 1499.2), concrete reinforcement evaluation, and geotextile tensile performance per ISO 10319. Academic researchers utilize its open API for integration with in-situ imaging systems (e.g., digital image correlation) and thermomechanical staging.
FAQ
What international standards does the TFW-77 support out-of-the-box?
It is pre-configured for ASTM E4, ASTM D638, ASTM D790, ISO 6892-1, ISO 527, GB/T 228.1, GB/T 16491, and JJG 475, with test method templates and calculation logic embedded directly in the software.
Can the system be validated for ISO/IEC 17025 accreditation?
Yes—the hardware meets mechanical and metrological criteria specified in ISO/IEC 17025:2017 Clause 6.4; full validation packages (IQ/OQ/PQ), uncertainty budgets, and traceable calibration records are available as optional services.
Is third-party calibration support provided?
Tuofeng maintains partnerships with CNAS-accredited calibration laboratories in China and EU-based DAkkS-certified providers; on-site or depot calibration with certificate issuance is offered globally.
Does the software support 21 CFR Part 11 compliance?
When deployed with role-based user accounts, electronic signatures, and audit trail logging enabled, the system satisfies core Part 11 requirements; full validation documentation is available upon request.
What is the warranty and service coverage?
Standard coverage includes 24 months parts-and-labor warranty, remote diagnostics, firmware updates, and lifetime access to software upgrades; extended service contracts with on-site response SLAs are available.
