SINOTEST DF61 Electro-Hydraulic Servo Universal Testing Machine
| Brand | SINOTEST |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Direct Manufacturer |
| Regional Category | Domestic (China) |
| Model | DF61 |
| Price Range | USD 14,000 – 42,000 |
| Instrument Type | Electro-Hydraulic Servo Testing Machine |
| Force Capacity Range | 300 kN – 2000 kN |
Overview
The SINOTEST DF61 Electro-Hydraulic Servo Universal Testing Machine is a high-stiffness, high-load-capacity static mechanical testing system engineered for precision mechanical property evaluation of structural and engineering materials under controlled force, displacement, or strain modes. Based on the principle of electro-hydraulic servo control, the system employs a closed-loop hydraulic actuation architecture driven by a high-bandwidth digital controller and precision pressure/flow servo valves. This enables stable, repeatable, and traceable application of axial loads up to 2000 kN — suitable for characterizing yield behavior, ultimate tensile strength, compressive modulus, ductility, fracture toughness indicators, and plastic deformation response across metallic alloys, reinforced concrete, prestressed steel strands, structural fasteners, and metal tubing. The machine’s rigid four-column frame design minimizes deflection under load, ensuring compliance with ISO 7500-1 Class 1 accuracy requirements for force measurement and ASTM E4 verification protocols.
Key Features
- High-rigidity, preloaded four-post load frame with integrated crosshead guidance and hardened steel loading platens
- Compact, low-noise integrated hydraulic power unit (HPU) featuring temperature-stabilized oil reservoir, filtration to NAS 1638 Class 6, and pressure ripple suppression
- Digital electro-hydraulic servo controller supporting simultaneous multi-channel feedback (load cell, extensometer, LVDT, encoder) with sampling rates up to 10 kHz
- Multi-mode closed-loop control: force control (±0.5% of full scale), displacement control (±0.1% FS), and strain control (with compatible clip-on or contacting extensometers)
- Modular test space configuration accommodating specimens up to 1200 mm in height and 600 mm in width; adjustable upper/lower crosshead positions via motorized lead screws
- Compliance with mechanical safety standards including ISO 12100 and EN 698 (hydraulic systems), with emergency stop circuitry certified to SIL 2 per IEC 61508
Sample Compatibility & Compliance
The DF61 accommodates standardized and non-standard specimens per international geometry specifications: flat tensile coupons (ASTM E8/E21, ISO 6892-1), cylindrical compression cylinders (ASTM C39, ISO 7500-1), beam-type bending specimens (ASTM D7264, ISO 14125), shear fixtures (ASTM D5379), flaring test mandrels (ISO 8493), and threaded fastener test assemblies (ISO 898-1, ASTM F606). All hardware interfaces — grips, platens, bending supports, and alignment fixtures — are manufactured to GD&T tolerances per ISO 2768-mK. The system meets mandatory metrological verification requirements per JJG 139 (China National Verification Regulation), GB/T 16826 (Chinese Standard for Electro-Hydraulic Servo UTM), and GB/T 2611 (General Technical Requirements for Testing Machines). Calibration certificates are traceable to NIM (National Institute of Metrology, China) and support ISO/IEC 17025-compliant laboratory accreditation.
Software & Data Management
The DF61 operates with SINOTEST TestMaster™ v4.x — a Windows-based, 64-bit testing platform compliant with FDA 21 CFR Part 11 for electronic records and signatures. The software provides real-time visualization of load-displacement, stress-strain, and time-history curves; automated calculation of mechanical parameters (Rp0.2, Rm, A%, Z%, E, n, m); and export to CSV, XML, and PDF formats with embedded metadata (operator ID, calibration date, environmental conditions). Audit trails record all user actions, parameter changes, and test interruptions. Data integrity safeguards include role-based access control (RBAC), encrypted database storage, and optional integration with LIMS via HL7 or RESTful API. Software validation documentation (IQ/OQ/PQ protocols) is available upon request for GLP/GMP-regulated environments.
Applications
- Mechanical qualification of hot-rolled and cold-drawn structural steels per GB/T 1499.2 and ASTM A615
- Compressive strength and elastic modulus determination of concrete cubes/cylinders per GB/T 50081 and ASTM C39
- Bending performance assessment of rebar and welded wire mesh per GB/T 232 and ISO 7438
- Tensile characterization of prestressed steel strands (GB/T 5224) and anchorages (GB/T 14370)
- Mechanical property verification of high-strength bolts, nuts, and washers per GB/T 3098.1 and ISO 898-1
- Flaring and扩口 (flaring) testing of seamless steel tubes per GB/T 242 and ISO 8493
FAQ
What is the maximum force capacity of the DF61 series?
The DF61 series offers scalable configurations from 300 kN to 2000 kN nominal force capacity, selected based on application-specific load requirements and specimen cross-sectional area.
Does the system support ASTM and ISO standard test methods out-of-the-box?
Yes — preconfigured test templates are included for ASTM E8, E9, E21, C39, D7264, and ISO 6892-1, 7438, 8493, with automatic parameter derivation and reporting layout per standard annexes.
Is third-party calibration and certification available?
SINOTEST provides factory calibration with NIM-traceable certificates; optional on-site verification and ISO/IEC 17025 accredited calibration services are available through authorized regional partners.
Can the DF61 be integrated into an existing laboratory network?
Yes — Ethernet (TCP/IP) and RS-232 interfaces support remote monitoring, data transfer, and centralized fleet management via SCADA or MES platforms.
What safety certifications does the DF61 hold?
The system conforms to GB/T 2611 (mechanical safety), GB 5226.1 (electrical safety), and EN 698 (hydraulic safety); CE marking is available for EU export configurations upon request.
