Jianhu JH-200/300 kN LCD-Display Electronic Tensile Testing Machine
| Brand | Jianhu |
|---|---|
| Origin | Shanghai, China |
| Model | JH-200/300 kN |
| Load Capacity | 200 kN / 300 kN |
| Load Measurement Range | 2–100% of full scale |
| Load Accuracy | ±1% or better |
| Effective Tensile Stroke | 650 mm (customizable) |
| Speed Range | 0.05–200 mm/min |
| Speed Accuracy | ±1% |
| Displacement Resolution | 0.01 mm |
| Power Supply | 220 V ±10%, 1 kW |
| Fixture Standard | One set of tensile grips and one set of compression platens |
| Interface Option | RS-232 or USB for external PC connection |
Overview
The Jianhu JH-200/300 kN LCD-Display Electronic Tensile Testing Machine is a dual-capacity, microprocessor-controlled universal testing system engineered for high-force mechanical property evaluation of metallic, polymeric, composite, and ceramic materials. It operates on the principle of controlled uniaxial force application via a precision ball-screw-driven crosshead, with load measured using calibrated strain-gauge-based load cells and displacement tracked via high-resolution rotary encoder feedback. Designed to ASTM E4, ISO 7500-1, and GB/T 228.1 compliance frameworks, this machine delivers repeatable, traceable, and auditable results suitable for quality control laboratories, R&D centers, and third-party certification facilities operating under GLP or ISO/IEC 17025 environments.
Key Features
- High-precision digital speed control system integrated with a low-backlash planetary gear reducer and preloaded ball screw assembly—enabling smooth, low-noise operation across the full speed range (0.05–200 mm/min) with ±1% speed accuracy.
- Large-format LCD display with intuitive touch-key interface supporting multi-layer navigation: test method selection, parameter configuration, real-time test monitoring, numeric result summary, and dynamic force–displacement curve visualization—all accessible without external software.
- Motorized crosshead with dual-speed adjustment: rapid positioning mode (for efficient sample setup) and fine-tuning mode (for precise gauge length alignment), both protected by hardware-based overload cutoff and software-limit safeguards.
- Modular load cell architecture rated for 200 kN or 300 kN maximum capacity, with verified linearity and hysteresis performance meeting ISO 7500-1 Class 1 requirements (±1% accuracy over 2–100% of full scale).
- Standard inclusion of ASTM-compliant tensile wedge grips and parallel compression platens; optional fixtures available for peel, shear, flexure (3-/4-point), and tear testing per ISO 6892-1, ASTM D638, D790, D1876, and D412 protocols.
Sample Compatibility & Compliance
The JH series accommodates specimens up to 650 mm in effective travel (extendable upon request), with grip throat depths and opening widths configurable for flat, round, or irregular geometries. Its mechanical architecture supports standardized specimen dimensions per ISO 6892-1 (e.g., Type 1A, 2, 5B), ASTM E8/E21 (metallics), and ASTM D638 (plastics). All calibration certificates are traceable to NIM (National Institute of Metrology, China) or equivalent national metrology institutes. The system’s mechanical design conforms to CE machinery directive 2006/42/EC safety requirements, while its measurement uncertainty budget aligns with ISO/IEC 17025 clause 7.6.3 for accredited testing laboratories.
Software & Data Management
While fully functional as a stand-alone instrument, the JH-200/300 kN offers optional RS-232 or USB serial interface for integration with Windows-based host systems. Compatible acquisition software provides automated test sequencing, real-time data logging at ≥10 Hz sampling rate, customizable report templates (PDF/Excel export), and audit-trail-enabled user access control. Raw data files store timestamped force, displacement, and time vectors in ASCII format, facilitating post-processing in MATLAB, Origin, or Minitab. For regulated environments, optional 21 CFR Part 11-compliant software modules support electronic signatures, role-based permissions, and immutable data archiving.
Applications
This system serves routine and advanced mechanical characterization needs including ultimate tensile strength (UTS), yield strength (Rp0.2), elongation at break, Young’s modulus, proof strength, compressive yield, and stress–strain curve derivation. It is routinely deployed for incoming raw material verification (e.g., steel billets, aluminum extrusions), finished product validation (e.g., welded joints, fasteners, structural composites), and failure analysis workflows requiring reproducible high-load loading profiles. In academic settings, it supports graduate-level mechanics of materials instruction and fatigue pre-conditioning studies when paired with environmental chambers (not included).
FAQ
What standards does the JH-200/300 kN comply with for calibration and testing?
It meets ISO 7500-1 Class 1 for load cell verification and supports test execution per ASTM E4, ISO 6892-1, GB/T 228.1, and ASTM D638—subject to correct fixture selection and specimen preparation.
Can the machine be upgraded to support closed-loop strain control?
No—the base configuration implements open-loop displacement control only; strain-controlled testing requires an external extensometer and optional closed-loop controller upgrade (not standard).
Is the 650 mm effective stroke adjustable onsite?
Yes—height extension kits are available as factory-installed options; field modifications are not recommended due to structural integrity and calibration validity concerns.
Does the system include data export capability without optional PC software?
Yes—the LCD interface supports manual screen capture and numeric result printout via optional thermal printer interface; full curve export requires PC connectivity.
What maintenance intervals are recommended for long-term accuracy retention?
Load cell recalibration every 12 months or after 10,000 cycles, ball screw lubrication every 6 months, and annual verification of encoder resolution and speed accuracy using NIST-traceable reference standards.
