Tuofeng TFW-35 Universal Testing Machine
| Brand | Tuofeng |
|---|---|
| Model | TFW-35 |
| Type | Electromechanical Universal Testing Machine |
| Max Test Load | 35 kN |
| Accuracy Class | 0.5 |
| Effective Force Range | 0.2–100% of Full Scale |
| Force Measurement Accuracy | ±0.005% of reading |
| Resolution | 1 part in ±500,000 full-scale load (no range switching) |
| Drive System | Imported servo motor with precision worm-gear reducer |
| Lead Screw | High-accuracy 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 sensor, accuracy ±0.005% of reading |
| Safety Protection | Electronic limit switches, emergency stop, overload protection (>110% FS), dual-speed motorized crosshead control |
| Software | Windows-based, multi-language (English/Chinese), compliant with ASTM E4, ISO 7500-1, GB/T 16491-2008, JJG 475-2008, supports GLP audit trail, data export to CSV/PDF, curve overlay, statistical reporting, and custom module integration |
Overview
The Tuofeng TFW-35 Universal Testing Machine is a high-precision electromechanical system engineered for static mechanical characterization of metallic, polymeric, composite, and ceramic materials under uniaxial tensile, compressive, flexural, shear, tear, peel, and puncture loading conditions. Based on the principle of controlled displacement actuation via a servo-driven ball-screw mechanism, the machine delivers traceable force and displacement measurements in accordance with international metrological standards. Its 0.5-class accuracy rating—certified per ISO 7500-1 and verified against national metrology regulations (JJG 475-2008)—ensures repeatability within ±0.005% of reading across the full force range (0.2–100% of 35 kN). Designed for laboratory and industrial quality control environments, the TFW-35 integrates robust mechanical architecture with real-time digital signal processing to support both routine compliance testing and advanced material behavior research.
Key Features
- High-resolution force measurement system with 1/500,000 internal resolution and no range-switching—maintaining consistent sensitivity from 70 N to 35 kN
- Precision preloaded ball screw transmission paired with an imported servo motor and low-backlash worm-gear reducer for smooth, low-noise motion control
- Dual-speed crosshead actuation (fast return + fine positioning) with programmable acceleration/deceleration profiles
- Integrated safety architecture including hardware-based emergency stop, electronic overtravel limits, and automatic overload cutoff at 110% of full scale
- Modular extensometry support: compatibility with clip-on axial extensometers (for modulus and yield point determination) and non-contact video extensometers (optional)
- Thermally stable structural frame with reinforced base and rigid column assembly to minimize deflection-induced measurement error
Sample Compatibility & Compliance
The TFW-35 accommodates specimens ranging from thin foils (<0.1 mm thickness) to structural metal bars (up to Ø25 mm diameter or 20×20 mm square section), enabled by customizable jaw geometries—including wedge-action pneumatic grips, vise-type hydraulic clamps, and specialized fixtures for ASTM D638, ISO 6892-1, GB/T 228.1, and EN 10002-1 specimen configurations. All test protocols adhere to internationally recognized standards, including ASTM E4 (load verification), ASTM E8/E21 (tension testing of metals), ISO 527 (plastics), ISO 178 (flexure), and ISO 14130 (short-beam shear). The system meets requirements for GLP-compliant environments, with software audit trails, user-access controls, and electronic signature capability aligned with FDA 21 CFR Part 11 principles where configured.
Software & Data Management
Tuofeng TestSuite™ is a Windows-native application supporting multi-language UI (English, Simplified/Traditional Chinese), unit conversion (N/kN/lbf, mm/inch, MPa/psi), and dynamic test mode selection—including constant rate of extension (CRE), constant load ramping, hold-to-strain, and cyclic loading sequences. Real-time plotting includes synchronized force–displacement, stress–strain, and displacement–time curves, with on-the-fly calculation of tensile strength, yield offset (0.2%), elongation at break, Young’s modulus, compressive yield, bending modulus, tear strength, and peel adhesion. Raw data streams are logged at ≥1 kHz sampling rate and stored in encrypted binary format; export options include CSV, XML, PDF reports with embedded metadata (operator ID, timestamp, calibration certificate ID, environmental conditions). The platform supports batch comparison, statistical summary (min/max/mean/SD), and third-party integration via TCP/IP or COM interface for MES/LIMS connectivity.
Applications
- Metallurgical QA/QC: Verification of yield strength, ultimate tensile strength, and ductility in hot-rolled steel, aluminum alloys, titanium grades, and stainless steels per ASTM A370 or ISO 6892-1
- Aerospace component validation: Tensile testing of fasteners, sheet metal, and additive-manufactured lattice structures under ambient and elevated temperature conditions (with optional furnace)
- Automotive material development: Characterization of high-strength steel AHSS, aluminum extrusions, and carbon-fiber-reinforced polymer (CFRP) laminates for crashworthiness modeling
- Construction materials certification: Compression testing of concrete cylinders, mortar prisms, and masonry units per ASTM C39 and EN 12390-3
- Rubber & elastomer R&D: Determination of tensile set, hysteresis, and Mullins effect using multi-cycle loading protocols
- Medical device testing: Evaluation of suture tensile strength (ASTM D2256), stent radial force, and orthopedic implant fixation stability
FAQ
What standards does the TFW-35 comply with for force calibration and verification?
The system conforms to ISO 7500-1:2018 (static calibration of uniaxial testing machines), ASTM E4-22 (verification of force-measuring instruments), and national metrological regulation JJG 475-2008.
Can the machine perform tests requiring strain control, such as creep or stress relaxation?
Yes—when equipped with a validated extensometer and configured with Tuofeng TestSuite™’s closed-loop strain control algorithm, the TFW-35 supports creep testing per ASTM E139 and stress relaxation per ISO 899-2.
Is remote operation or integration with factory automation systems supported?
The controller features Ethernet and RS-232 interfaces, enabling SCADA integration, PLC-triggered test initiation, and OPC UA-compatible data streaming for Industry 4.0 deployment.
What is the warranty coverage and service response time for international customers?
Tuofeng provides a 24-month parts-and-labor warranty, backed by certified field engineers in EU, North America, and APAC regions, with standard response time of ≤5 business days for critical issues.
How is software validation handled for regulated industries (e.g., pharmaceutical or aerospace QA)?
TestSuite™ supports IQ/OQ documentation packages, configurable electronic signatures, and audit-trail generation compliant with 21 CFR Part 11 and EU Annex 11 requirements upon request.
