Tuofeng TFW-302 Microcomputer-Controlled Electronic Universal Testing Machine
| Brand | Tuofeng |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Model | TFW-302 |
| Load Capacity | 300 kN |
| Load Accuracy | ±0.5% |
| Instrument Type | Electromechanical Universal Testing Machine |
| Compliance | GB/T 16491–2008, JJG 475–2008, ASTM E4, ISO 7500-1, DIN 51221, JIS B 7721 |
| Test Modes | Tensile, Compression, Bending, Shear, Tear, Peel, Burst |
| Control System | Closed-loop servo motor + precision ball screw drive |
| Test Speed Range | 0.001–500 mm/min (infinitely variable) |
| Effective Test Width | 400 mm (customizable up to 1100 mm) |
| Max Stroke | 800 mm (extendable) |
| Displacement Measurement | Optical encoder, accuracy ±0.005% of reading |
| Deformation Measurement | Optional extensometer or large-deformation sensor, accuracy ±0.005% of reading |
| Safety Protection | Dual-limit electronic positioning, emergency stop, overload cutoff (>110% F.S.), automatic return after test |
| Software | Multi-language (EN/CN/TC), real-time curve plotting (F-t, F-δ, δ-t, σ-ε, F-ΔL), auto-calculation of UTS, YS, E, Elongation, Modulus, Tear Strength, Peel Strength, Bond Strength, etc. |
| Data Management | Auto-save, batch comparison, statistical reporting (min/max/avg), GLP-compliant audit trail (optional), export to CSV/PDF/Excel |
Overview
The Tuofeng TFW-302 is a high-precision, microcomputer-controlled electromechanical universal testing machine engineered for rigorous mechanical property characterization of metallic, polymeric, composite, and elastomeric materials. It operates on a closed-loop servo control architecture, integrating an imported AC servo motor, precision planetary gear reducer, and ground-finish ball screw transmission system to ensure smooth, backlash-free motion and exceptional force fidelity across its full 300 kN load range. The system adheres strictly to international metrological and performance standards—including ISO 7500-1 (Class 0.5), ASTM E4 (Standard Practices for Force Verification), and GB/T 16491–2008—making it suitable for accredited laboratories conducting routine QC, R&D validation, and regulatory submissions. Its modular design supports standardized test configurations per ASTM D638 (tensile), ASTM D790 (flexural), ASTM D143 (compression), ASTM D624 (tear), ASTM D903 (peel), and ISO 179 (impact bending), with seamless adaptation to cable-specific fixtures such as helical grips, insulated jacket clamps, and conductor anchoring assemblies.
Key Features
- High-resolution force measurement with ±0.5% accuracy over 0.2–100% of full scale, enabled by a temperature-compensated load cell and 24-bit A/D conversion
- True constant-rate displacement control (0.001–500 mm/min), with real-time feedback loop adjustment to maintain setpoint stability under dynamic loading conditions
- Dual-speed motorized crosshead actuation (fast approach + fine positioning) and programmable return-to-start functionality for unattended batch testing
- Integrated safety architecture: hardware-based emergency stop, dual electronic limit switches, mechanical overload cutoff (>110% F.S.), and software-enforced parameter bounds
- Modular fixture interface compatible with ISO 26203-compliant grip systems, including pneumatic, wedge, and hydraulic options for wire, stranded cable, insulation sheath, and armored termination specimens
- Thermally stable frame construction with reinforced C-frame geometry to minimize deflection-induced measurement error during high-load tensile tests on copper/aluminum conductors or steel-reinforced cables
Sample Compatibility & Compliance
The TFW-302 accommodates a broad spectrum of cable-related specimens—from bare copper/aluminum conductors (AWG 4/0 to 36 AWG) and insulated single-core wires (PVC, XLPE, Teflon, rubber) to multi-layer armored cables, fiber-optic buffer tubes, and composite overhead conductors. Standard compliance includes GB/T 2951 (cable insulation & sheath mechanical tests), IEC 60811 (non-metallic materials), UL 1581 (reference standard for wire & cable), and EN 50396 (mechanical testing of railway cables). All test protocols support traceable calibration via NIST-traceable reference standards, and the system meets requirements for GLP and GMP environments when configured with 21 CFR Part 11-compliant software modules (audit trail, electronic signature, user access control).
Software & Data Management
Tuofeng’s proprietary TESTMaster™ v5.2 software runs natively on Windows 10/11 and provides full configurability for cable-specific test methods—including elongation-at-break under controlled strain rate, tensile strength retention after thermal aging, jacket adhesion peel resistance, and conductor pull-out force profiling. Real-time visualization includes synchronized dual-axis plots (e.g., stress–strain + temperature ramp), customizable pass/fail thresholds, and automated report generation compliant with ISO/IEC 17025 documentation requirements. Data files are stored in encrypted SQLite format with immutable timestamps; raw datasets export to CSV, PDF, or Excel without loss of metadata. Optional modules enable remote monitoring via Ethernet/IP, integration with MES/LIMS systems via OPC UA, and long-term trend analysis across production lots.
Applications
- Tensile evaluation of stranded copper conductors per ASTM B33 and IEC 60228, including yield offset determination at 0.2% strain
- Insulation elongation and tensile strength testing on extruded PVC/XLPE jackets before and after heat aging (IEC 60811-1-1)
- Peel strength quantification of laminated shield tapes and aluminum-polymer bonding interfaces
- Compression resistance of cable fillers and bedding compounds under sustained load (IEC 61034)
- Flex fatigue simulation using programmed cyclic loading profiles for robotic arm cables and wind turbine torsion cables
- Quality gate verification for incoming raw materials (e.g., annealed vs. hard-drawn wire) and finished cable reels prior to shipping
FAQ
Does the TFW-302 support automated test sequence execution for multi-specimen cable batches?
Yes—TESTMaster™ supports script-based test sequencing with conditional branching, automatic fixture recognition via RFID tags, and pass/fail logic triggering downstream actions (e.g., reject flagging, data archiving).
Can the system be calibrated in-house using standard weights or does it require third-party certification?
While daily verification can be performed using Class M1 certified deadweights per ISO 7500-1 Annex B, annual full-range calibration must be conducted by an ISO/IEC 17025-accredited provider; Tuofeng supplies calibration certificates with uncertainty budgets.
Is deformation measurement mandatory for cable tensile testing, or is crosshead displacement sufficient?
For accurate modulus and yield point determination per ASTM D3822 (high-modulus fibers) or IEC 60721-3-3 (cable strain limits), direct strain measurement via clip-on extensometer is recommended; crosshead displacement alone satisfies only basic UTS and elongation reporting per GB/T 2951.31.
What is the warranty coverage and expected service life under continuous industrial use?
Tuofeng provides 24-month comprehensive warranty covering parts, labor, and software updates; with scheduled maintenance (lubrication, load cell verification, encoder alignment), the system achieves >15 years of operational service life in Tier-1 cable manufacturing facilities.
