Beiguang Jingyi BWN-3KN High-Precision Electromechanical Tensile Testing Machine for Polymeric Materials
| Brand | Beiguang Jingyi / All Precision Instrument |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Model | BWN-3KN |
| Maximum Test Force | 3 kN |
| Force Measurement Range | 2–100% FS |
| Force Accuracy | ±1% of reading (Class 1 according to GB/T 16491 & ISO 7500-1) |
| Displacement Resolution | 0.001 mm |
| Displacement Accuracy | ±1% of reading |
| Test Speed Range | 0.05–500 mm/min (infinitely variable, ±1% accuracy) |
| Effective Stroke | 700 mm |
| Effective Width | 400 mm |
| Compliance Standards | GB/T 1040, GB/T 2792, ASTM D412, ASTM D3574, ISO 37, ISO 1798, EN ISO 1421 |
Overview
The Beiguang Jingyi BWN-3KN is a high-precision electromechanical tensile testing machine engineered for reliable mechanical characterization of polymeric materials, elastomers, films, foams, adhesives, and composite sheets. It operates on the principle of controlled uniaxial force application via a servo-controlled DC motor, precision ball-screw actuation, and closed-loop load/displacement feedback. The system conforms to international static mechanical testing standards—including ISO 7500-1 (force measurement calibration), ISO 5893 (tensile testing machines), and ASTM E4—ensuring traceable, repeatable, and auditable test results suitable for QC laboratories, R&D departments, and third-party certification bodies. Its dual-column or single-arm structural configuration provides rigidity and alignment stability critical for maintaining specimen coaxiality during high-sensitivity modulus and elongation measurements.
Key Features
- Full-digital AC servo motor and high-resolution optical encoder enable precise speed control across 0.05–500 mm/min with ±1% speed accuracy and ultra-low operational noise.
- High-stiffness ball-screw transmission system coupled with arc-synchronous precision reduction gear ensures smooth, backlash-free motion and long-term mechanical repeatability.
- Integrated load cell (3 kN capacity) and displacement transducer deliver force resolution of 1/300,000 full scale and sub-micron positional resolution (0.001 mm).
- Modular夹具 design includes standard tensile grips with optional universal joint cross-pins to accommodate irregular or low-modulus specimens while minimizing bending moments and sensor interference.
- Real-time dual-curve display (load vs. time, stress vs. strain) with auto-scaling, zoom, and overlay functions within the Windows-based software interface.
- Comprehensive hardware safety architecture: overload cutoff, end-limit switch protection, over-current/voltage monitoring, and automatic test termination upon failure detection.
- Configurable test profiles supporting multi-step loading protocols (e.g., preload → ramp → hold → relaxation), ideal for creep, stress-relaxation, and cyclic fatigue pre-conditioning per ISO 6892-1 and ASTM D790.
Sample Compatibility & Compliance
The BWN-3KN accommodates standardized dumbbell, strip, and film specimens per ISO 527, ASTM D638, and GB/T 1040. Optional fixtures extend capability to peel (ASTM D903), shear (ASTM D1002), tear (ISO 34-1), and compression (ISO 7500-1 Annex C) configurations. All mechanical and metrological performance parameters comply with Class 1 accuracy requirements under GB/T 16491 and ISO 7500-1. Data integrity meets GLP/GMP documentation expectations through timestamped audit trails, user-access controls, and electronic signature support—fully compatible with FDA 21 CFR Part 11–compliant validation packages when deployed with validated software modules.
Software & Data Management
The embedded Windows application supports method-driven workflow management: parameter definition (pre-load, target strain rate, break criteria), real-time curve annotation, and automated report generation in editable Word (.docx) and Excel (.xlsx) formats. Raw data export includes ASCII-delimited time-series files for post-processing in MATLAB, Python, or Minitab. Calibration certificates are digitally linked to sensor serial numbers; recalibration intervals adhere to ISO/IEC 17025 recommendations. Software updates maintain backward compatibility with historical test databases and support networked deployment in centralized lab environments.
Applications
This instrument is routinely deployed for tensile strength, yield point, Young’s modulus, elongation at break, and Poisson’s ratio determination in thermoplastics (PP, PE, PET), thermosets (epoxies, phenolics), elastomeric foams (PU, latex), pressure-sensitive adhesives (PSA), biomedical polymers (PLA, PCL), and packaging films (BOPP, PETG). It serves as a primary tool for material qualification per automotive OEM specifications (e.g., VW 50185), medical device ISO 10993 biocompatibility screening, and construction sealant ASTM C719 compliance verification.
FAQ
What standards does the BWN-3KN meet for force calibration?
It complies with ISO 7500-1 Class 1 and GB/T 16491 Grade 1 requirements, verified using NIST-traceable deadweight standards.
Can the system perform cyclic loading tests?
Yes—software-defined step sequences allow programmable load/unload cycles up to 100,000 repetitions with dwell control and hysteresis analysis.
Is third-party IQ/OQ/PQ validation support available?
Yes—Beiguang Jingyi provides protocol templates, URS alignment documentation, and on-site validation assistance for regulated environments.
What maintenance is required for long-term accuracy?
Annual recalibration of the load cell and encoder is recommended; no routine user maintenance is needed per manufacturer guidelines.
Does the system support ASTM D412 die-cut specimen testing?
Yes—standard pneumatic or manual tensile grips accept ASTM D412 Type C dumbbells; optional extensometer integration enables true strain measurement.
