Tuofeng TFW-34 Dual-Column Microcomputer-Controlled Electronic Universal Testing Machine
| Brand | Tuofeng |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | TFW-34 |
| Instrument Type | Electromechanical Universal Testing Machine |
| Max Test Load | 34 kN (derived from model designation |
| Accuracy Class | 0.5 |
| Effective Force Range | 0.2–100% of full scale |
| Force Measurement Accuracy | ±0.005% of reading |
| Resolution | 1/500,000 full-scale codes, single-range, constant resolution |
| Drive System | Imported servo motor + precision worm gear reducer |
| Lead Screw | High-precision preloaded ball screw |
| Effective Test Width | 400 mm (customizable up to 600 mm) |
| Stroke | 800 mm (extendable) |
| Speed Range | 0.001–500 mm/min (infinitely variable) |
| Displacement Measurement | Optical encoder, accuracy ±0.005% of reading |
| Strain Measurement | Optional extensometer or large-deformation transducer, accuracy ±0.005% of reading |
| Safety Protection | Dual electronic limit switches, emergency stop, overload protection (>110% FS), automatic return post-test |
| Crosshead Control | Dual-speed (fast/slow) motorized adjustment with jog function |
| Power Supply | 220 V AC, 1.0 kW |
| Dimensions (W×D×H) | 780 × 680 × 1780 mm |
| Weight | ~300 kg |
| Compliance | GB/T 16491–2008, JJG 475–2008, ASTM E4, ASTM E8, ISO 6892-1, ISO 7500-1, DIN 51221, JIS Z 2241 |
Overview
The Tuofeng TFW-34 is a dual-column, microcomputer-controlled electromechanical universal testing machine engineered for high-precision mechanical property characterization of metallic, polymeric, elastomeric, composite, and ceramic materials. Based on the fundamental principles of quasi-static axial force application and displacement-controlled actuation, the system applies controlled tensile, compressive, flexural, shear, tear, peel, and puncture loads to specimens while continuously recording force, displacement, and—when equipped—strain data. Its rigid frame architecture, coupled with a preloaded ball screw transmission and imported servo drive, ensures minimal deflection, excellent load linearity, and long-term repeatability across the full operational range. Designed in strict accordance with GB/T 16491–2008 (equivalent to ISO 7500-1 Class 0.5) and verified per JJG 475–2008 metrological verification protocol, the TFW-34 delivers traceable measurement integrity required for R&D validation, QC release testing, and regulatory submission support.
Key Features
- Dual-column structural design with reinforced welded steel frame, optimized for torsional rigidity and lateral stability during high-force compression and bending tests.
- 0.5-class accuracy certified force measurement system featuring digital load cell with ±0.005% full-scale linearity error and 500,000-count internal resolution—no range switching required.
- High-resolution optical encoder-based crosshead displacement measurement, independent of screw pitch error, with ±0.005% reading accuracy and real-time synchronization to load acquisition.
- Infinitely variable test speed control from 0.001 to 500 mm/min, enabling precise strain-rate-dependent evaluation per ASTM D638 (plastics), ASTM D412 (rubber), and ISO 37 (vulcanized rubber).
- Integrated safety architecture: dual hardware limit switches, momentary emergency stop button, programmable overload cutoff (110% FS), and automatic return-to-initial-position upon test completion.
- Motorized crosshead with fast/slow dual-speed mode and incremental jog control for rapid specimen alignment and fine positioning without manual intervention.
Sample Compatibility & Compliance
The TFW-34 accommodates standardized and custom geometries across diverse material classes—including vulcanized rubber compounds, thermoplastic elastomers, fiber-reinforced polymers, sheet metal, wire, adhesives, and thin films—via interchangeable fixture sets (tensile grips, compression platens, 3-/4-point bend fixtures, peel jigs, and puncture probes). All mechanical testing workflows comply with internationally recognized standards: ASTM D412/D624/D3574 (rubber & foam), ISO 37/6892-1/179/18 (tensile/flexural), GB/T 528/1040/9341, DIN 53504, and JIS K 6251. The system supports GLP-aligned operation through audit-trail-enabled software logging, user-access controls, and electronic signature capability—facilitating compliance with FDA 21 CFR Part 11 when configured with validated software modules.
Software & Data Management
Tuofeng’s proprietary Windows-based testing software provides multi-mode closed-loop control (constant rate of extension, constant load, constant strain, hold, cyclic ramping) and real-time visualization of up to four synchronized curves: load–time, load–displacement, stress–strain, and displacement–time. Units are freely convertible between SI, imperial, and legacy systems (e.g., MPa/kPa/psi, mm/in, N/lbf). Raw data is stored in ASCII CSV and proprietary binary formats with metadata tagging (operator ID, date/time stamp, calibration ID, environmental conditions). Batch analysis tools enable statistical comparison of n≥1 samples, overlay of up to 16 curves, and automated calculation of tensile strength, yield point (0.2% offset), modulus (secant/tangent), elongation at break, compressive yield stress, flexural modulus, tear energy (DIN 53507), and peel adhesion (90°/180°). All reports are exportable to PDF, Excel, or printer-ready layouts with customizable headers, footers, and institutional branding.
Applications
The TFW-34 serves as a primary mechanical characterization platform in rubber formulation labs, tire compound development centers, polymer processing facilities, and automotive Tier-1 supplier QA departments. Typical use cases include: evaluating cure-state dependency of natural/synthetic rubber tensile properties; quantifying hysteresis and permanent set in dynamic sealing applications; validating adhesion strength between rubber-to-metal bonded assemblies; assessing creep and stress relaxation behavior under sustained loading per ISO 8013; determining hardness–modulus correlations in elastomeric gaskets; and performing accelerated aging studies (heat/UV/ozone exposure) followed by comparative mechanical testing. It is also deployed in academic materials science programs for undergraduate mechanics labs and graduate-level fracture mechanics research.
FAQ
What standards does the TFW-34 support out-of-the-box?
The system includes preconfigured test methods for ASTM D412, ISO 37, GB/T 528, and DIN 53504, with additional standards available via optional method packs.
Can the machine perform cyclic fatigue testing?
Yes—the software supports programmed waveform generation (sine, triangle, trapezoidal) with adjustable frequency, amplitude, and mean load, suitable for low-cycle fatigue up to 5 Hz with appropriate load cell bandwidth.
Is third-party calibration certification included?
Each unit ships with a factory calibration certificate traceable to CNAS-accredited standards; ISO/IEC 17025-compliant field calibration services are available upon request.
What extensometer options are compatible?
Standard offerings include clip-on axial extensometers (10–50 mm gauge length, ±0.5 µm resolution) and non-contact video extensometry for soft/rubbery specimens requiring zero contact loading.
Does the software meet FDA 21 CFR Part 11 requirements?
The base software includes audit trail, electronic signatures, and role-based access control; full Part 11 validation documentation and IQ/OQ/PQ protocols are provided as an add-on service.
