QJNZ-10000 Torsion Testing Machine by Qingji

Overview

The QJNZ-10000 Torsion Testing Machine is a high-capacity, microprocessor-controlled electromechanical system engineered for precise static and quasi-static torsional characterization of metallic and non-metallic materials, structural components, and mechanical assemblies. Based on the principle of controlled angular displacement under applied torque, the machine delivers traceable, repeatable measurements of torsional strength, yield behavior, plastic deformation, and torsional stiffness. It operates in dual-control modes—torque-controlled and angle-controlled—with real-time feedback loops ensuring stable load application across the full 0.01–1000 °/min speed range. Designed for laboratory, quality assurance, and R&D environments, the system meets fundamental metrological requirements defined in national standards GB/T 9370–1999 (Methods for Tensile Testing of Metallic Materials), GB/T 239–1999 (Torsion Testing of Metallic Wires), and JJG 269–1981 (Verification Regulation for Torque Measuring Instruments), supporting traceability to SI units through calibrated transducers and angular encoders.

Key Features

• High-torque capacity up to 10,000 N·m with full-scale torque resolution of 1/350,000—enabling consistent precision across the entire measurement range without range switching or manual recalibration.
• Ultra-fine angular resolution of ±0.001° and angular accuracy of ±0.009°, achieved via high-stability optical rotary encoder and low-backlash planetary gear reduction drive.
• Infinitely variable torsion speed control (0.01–1000 °/min), programmable via software interface for ramp, step, hold, or cyclic loading profiles.
• Robust mechanical architecture featuring 1500 mm adjustable gauge length and dual hydraulic/pneumatic clamping jaws accommodating specimens from Φ8 mm to Φ40 mm (expandable with custom fixtures).
• Integrated 5 kW servo motor with closed-loop vector control ensures minimal speed drift (<±0.2% of setpoint) and torque response stability under dynamic loading conditions.
• Compliance-ready hardware design supports audit trails, electronic signatures, and data integrity protocols aligned with GLP and GMP principles where applicable.

Sample Compatibility & Compliance

The QJNZ-10000 accommodates solid cylindrical rods, wires, shafts, fasteners, weld joints, composite laminates, and machined mechanical subassemblies. Its modular fixture system allows rapid reconfiguration for standardized test geometries per ISO 7800, ASTM E143, and EN 10002-5. The system satisfies calibration and verification requirements specified in JJG 269–1981 and conforms to the performance criteria outlined in GB/T 9370–1999 for torsional testing instrumentation. All torque and angular transducers are factory-calibrated against NIM-traceable reference standards, and calibration certificates include uncertainty budgets compliant with ISO/IEC 17025 guidelines.

Software & Data Management

The embedded virtual instrument platform provides real-time acquisition, visualization, and post-processing of torque-angle, torque-time, and angle-time datasets. Software modules support automated calculation of shear modulus (G), non-proportional limit stress (τ_p), torsional yield strength (τ_y), ultimate torsional strength (τ_u), and angle of twist at failure. Raw data export is available in CSV, TXT, and XML formats; report templates comply with ISO 14289-1 (PDF/A-1a) for long-term archival. Optional 21 CFR Part 11 compliance packages include user access controls, electronic signature workflows, and immutable audit logs for regulated QA/QC environments.

Applications

• Determination of torsional yield point, ultimate shear strength, and ductility of steel, aluminum, titanium, and polymer-based rods and bars.
• Evaluation of torsional fatigue resistance in automotive driveline components, aerospace fasteners, and orthopedic implants.
• Validation of heat treatment effects on shear modulus and plastic flow behavior in alloy systems.
• Calibration and verification of torque wrenches, transducers, and industrial torque sensors per ISO 6789-2.
• Research into viscoelastic torsional response of thermoplastics and fiber-reinforced composites under controlled strain rates.
• Testing of welded joints, brazed assemblies, and adhesive bonds under pure torsional loading per AWS D1.1 Annex K.

FAQ

What standards does the QJNZ-10000 comply with for torque calibration and verification?
It adheres to JJG 269–1981 (Chinese national verification regulation for torque measuring instruments), GB/T 9370–1999 (tensile testing methodology extension to torsion), and GB/T 239–1999 (wire torsion testing). Calibration is traceable to National Institute of Metrology (NIM) reference standards.
Can the system perform cyclic torsion tests?
Yes—the software supports programmable multi-step torsional waveforms including sinusoidal, triangular, and trapezoidal loading patterns, with user-defined frequency, amplitude, and dwell time parameters.
Is remote diagnostics or firmware update capability supported?
The controller includes Ethernet port and RS-232 interface; remote maintenance and firmware updates can be performed via secure SSH connection under IT-administered network policies.
What is included in the standard warranty and service coverage?
The system carries a 12-month comprehensive parts-and-labor warranty from commissioning date, with lifetime technical support and priority access to certified field service engineers for preventive maintenance and recalibration.
Are custom夹具 (fixtures) or extended specimen diameter ranges available?
Yes—Qingji offers OEM-design services for specialized grips, torsion adapters, and environmental chambers (e.g., heated or cooled fixtures) compatible with the QJNZ-10000 frame and control architecture.