The GWA-ES Series Microcomputer-Controlled Electro-Hydraulic Servo Universal Material Testing Machine—designed for dual-purpose testing of steel bars and strands—is a high-rigidity, single-space testing system developed and manufactured by Zhejiang Yiyu Instrument Equipment Co., Ltd. Specifically optimized for the testing requirements of steel bars and strands, this model offers a load capacity range of 600 kN to 1000 kN, making it an ideal choice for applications in steel construction, civil engineering, and the research and quality inspection of high-performance metal materials.
Core Design and Advantages
High-Rigidity Six-Column Structure:
- The main unit features a six-column frame structure combined with external-cylinder grips and fully open-style clamps, ensuring exceptional stability and ease of operation during high-load testing.
Dual-Purpose Clamping System:
- Equipped with elongated, thickened, ultra-rigid jaw inserts capable of meeting the specific tensile requirements of steel strands while also handling tensile tests for rebar within the same class.
- The integrated hydraulic grip system features semi-open jaw openings and high-strength backing plates, effectively preventing specimen slippage and minimizing jaw wear.
Intelligent User Experience:
- Features an extra-large LCD screen and a high-performance industrial touch-screen PC, significantly enhancing the laboratory's professional image.
- Powered by the unique SmartTest operating interface, the system runs smoothly, offering an intuitive digital monitoring and control experience.
Quiet and Energy-Efficient Operation:
- The hydraulic system utilizes servo-motor drive technology paired with a high-efficiency radial piston pump; this ensures ultra-low noise levels and effectively prevents oil temperature rise, creating a quiet, comfortable working environment for the laboratory.
Enhanced Safety Protection:
- Equipped with a transparent, explosion-proof safety screen that ensures full visibility of the testing process while providing comprehensive safety protection for operators.
Superior Measurement Accuracy:
- Utilizes a low-pressure bidirectional cylinder and a high-precision load cell, delivering exceptional accuracy, repeatability, and long-term stability, achieving Class 1 precision standards.
Key Application Areas
- Tensile Testing: Metal rods, metal sheets, fasteners, tubing, rebar, steel strands, high-strength bolts, etc.
- Bending and Compression: Supports bending tests for metal materials and compression performance testing for concrete.
Frequently Asked Questions (FAQ)
Q1: How does the "G-Series" differ from standard universal testing machines?
A: Its core advantage lies in its "dual-purpose" capability. Featuring specially lengthened and thickened grips along with an external hydraulic cylinder design, it offers superior stability and wear resistance when testing both standard rebar and high-strength steel strands compared to standard models.
Q2: What are the features of the SmartTest operating interface?
A: The SmartTest interface is optimized for industrial touch-screen operation. It offers a clear, intuitive layout and generates real-time curves for force, displacement, and deformation, greatly simplifying complex testing procedures.
Q3: Is the equipment noisy during operation?
A: Noise levels are very low. Thanks to servo-motor drive technology, the hydraulic pump operates efficiently only when needed, ensuring "ultra-low decibel" operation—far quieter than traditional hydraulic power sources.
Q4: Does the equipment require a special foundation for installation?
A: It features an adjustable upper crosshead design, making transport and positioning easy. While use on a solid, level surface is recommended, the machine's structural stability allows for rapid deployment on standard laboratory flooring.
Q5: What are the power supply requirements?
A: Given its massive 1000kN capacity, the machine operates on AC 380V three-phase power; it is highly energy-efficient, with a power rating of only 1.5kW.
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