Computer Controlled Electro - Hydraulic Servo Universal Testing Machine

1. Equipment Name: Computer Controlled Electro-Hydraulic Servo Universal Testing Machine Equipment Model: WAW-1500D

2. Overview:

Main Machine: The WAW-1500D Computer Controlled Electro-Hydraulic Servo Universal Testing Machine integrates automatic control, automatic measurement, data acquisition, screen display, and test result processing. It uses a lower-positioned cylinder main machine as the platform, equipped with a precision servo oil pump and servo motor to achieve multi-channel closed-loop control, completing functions such as full automatic control and automatic measurement of the test process. It is characterized by high professionalism, high reliability, and easy upgrades, and can be continuously improved with the development of testing machine measurement and control technology and changes in test standards.

Application Scope: Mainly used for tensile, compression, and bending tests of metals and non-metals. Applicable to fields such as metallurgy, construction, light industry, aviation, aerospace, materials, universities, and research institutions. Test operation and data processing comply with the requirements of GB/T228-2010 "Metallic Materials - Tensile Testing at Ambient Temperature".

3. Manufacturing and Inspection Standards of the Product:

GB/T16491-1996 "Electronic Universal Testing Machines"

GB2611-92 "General Technical Requirements for Testing Machines"

GB/T6825.1-2002 "Verification of Static Uniaxial Testing Machines - Part 1: Tension/Compression Testing Machines - Verification and Calibration of the Force-measuring System"

GB1499.1-2007 "Technical Requirements for Mechanical Equipment"

2006/42/EC "Low Voltage Technical Requirements"

2006/95/EC "Relevant Specifications"

4. Applicable Test Method Standards:

GB/T228-2010 "Metallic Materials - Tensile Testing at Ambient Temperature"

GB/T7314-2005 "Metallic Materials - Compression Testing at Ambient Temperature"

GB/T14452-1993 "Test Method for Mechanical Properties of Metal Materials by Bending"

JTGE30-2005 (JTG E30-2005) P87 "Specifications and Test Methods for Cement and Cement Concrete in Highway Engineering"

GB/T8653-1988 "Test Methods for Elastic Modulus, Secant Modulus, Tangent Modulus, and Poisson's Ratio of Metals"

GB/T10128 "Metallic Materials - Torsion Testing at Ambient Temperature"

5. Basic Structure and Main Functions:

Main Machine: The main machine adopts a four-column structure with an integrated cast steel frame and a high-precision ground cylinder placed below. This structure greatly reduces the height of the main machine, making transportation and installation convenient, and ensuring stable and reliable performance. The test platform's lift is driven by a motor, chain, and screw rod, allowing for easy adjustment of the tensile space and convenient test operation.

Measurement and Control System: Composed of an electro-hydraulic servo control oil source, a fully digital Panasonic servo controller, a Panasonic servo motor, a load sensor, an extensometer for measuring specimen deformation, an optical encoder for measuring displacement, a special PC measurement and control card for the testing machine, a printer, a multifunctional test software package, and an electrical control unit.

Standard Electro-Hydraulic Proportional Control Oil Source:

A load-adaptive throttle speed control system designed and manufactured using standard modular unit design, specifically for microcomputer-controlled hydraulic universal testing machines.

Equipped with high-quality Italian Marzocchi servo oil pump, servo motor, and servo driver, ensuring reliable quality and stable performance.

Uses a self-developed load-adaptive throttle speed control valve with unique technology, ensuring stable system pressure, adaptive constant differential flow regulation, no overflow energy consumption, and easy PID closed-loop control.

The pipeline system uses a set of components with stable performance, ensuring reliable hydraulic system sealing without oil leakage failures.

Main Advantages:

Low noise: less than 50 decibels under maximum working load, virtually silent.

Energy-saving: 70% more efficient than conventional equipment.

High control accuracy: control accuracy can reach 0.01% (conventional is 0.05%).

No control dead zone: control start point can reach 1%.

Highly integrated oil circuit with fewer leakage points.

Electrical Control Cabinet:

All strong electrical components are concentrated in the strong electrical control cabinet, effectively separating the strong electrical unit from the measurement and control weak electrical unit, ensuring long-term stable operation of the measurement and control system.

Manual operation buttons are set on the electrical control cabinet, including the power switch, emergency stop, and oil source oil pump start/stop.

High-Resolution Digital Controller:

The system uses a PC computer as the main body, with full digital PID adjustment, combined with a PC card amplifier, measurement and control software, and data acquisition and processing software to achieve closed-loop control of test force, specimen deformation, and piston displacement, and smooth switching of control modes.

The system is composed of three signal conditioning units (test force unit, oil cylinder piston displacement unit, specimen deformation unit), control signal generator unit, electro-hydraulic proportional valve drive unit, electro-hydraulic proportional oil source control unit, necessary I/O interfaces, and software system.

The closed-loop control circuit of the system: measurement sensors (pressure sensors, displacement sensors, deformation extensometers) and electro-hydraulic proportional valves, controllers (various signal conditioning units), control amplifiers together form multiple closed-loop control circuits, realizing closed-loop control functions of test force, oil cylinder piston displacement, and specimen deformation; with various control modes such as constant rate test force, constant rate piston displacement, constant rate strain, etc., and smooth switching of control modes, making the system more flexible.

Special PC Card-Type Automatic Control Amplifier for Testing Machine:

Pluggable PC card using advanced computer bus control technology, specifically designed for testing machines, with program-controlled analog amplifier, A/D conversion, digital data acquisition channels, digital I/O, etc.

The special measurement and control card and the PC form a single-card measurement and control system, which can be directly connected to sensors for measurement and control and data acquisition, simplifying the complex measurement and control and data acquisition system to be simple and reliable.

Using computer bus technology, directly inserted into the computer expansion slot, fully digital circuits, zero adjustment, gain adjustment, etc., are all achieved through software, representing the latest product unit in the development of testing machine measurement and control technology.

Programmable gain cascade amplifier for different gain amplification.

The same voltage is used for the bridge supply power and the reference voltage of the A/D chip, achieving hardware compensation technology for the bridge supply power.

Multi-bit A/D conversion to meet the system's sensitivity and resolution requirements, avoiding the software multiplication method that reduces system characteristics.

Testing Software:

Operating system under Windows platform with an English interface (MAXTEST).

The computer screen displays test force, piston displacement, loading rate, deformation test data, and can plot various test curves such as time-test force/deformation, deformation-test force, etc.; automatically processes data, with data processing methods meeting the requirements of GB/T228-2010 standard, such as upper and lower yield points, maximum force point, various prescribed non-proportional stress points, various prescribed total elongation stress points, etc., and meets the pressure test requirements of the testing machine.

The software also provides data analysis functions to meet the test personnel's needs for test analysis and special test data processing.

Strong graphic operation functions, such as dynamic test curve and digital display functions, graph magnification and interception functions, cursor following display functions, etc.

Uses VXDs high-speed data acquisition technology to achieve multi-channel (up to 16 channels) high-speed data acquisition.

Complete file operation functions for storing test curves and test data; test data can also be stored in ASCII format for users to perform secondary data processing.

Functions for printing single test reports and batch test reports.

The control system has overload, over-setting, power failure, piston reaching limit position, and other protection functions.

Independent low-noise hydraulic clamping oil source to control the clamping and releasing of the jaws.

6. Main Technical Indicators:

Maximum test force:1500kN.

Test force measurement range: 2%-100%FS.

Test force indication accuracy: indication accuracy ±1%.

Maximum tensile space: 700mm.

Maximum compression space: 600mm.

Distance between columns: 650mm.

Piston displacement indication accuracy: ±1%FS.

Deformation measurement resolution: not less than 1/300000.

Deformation measurement accuracy: ±1%.

Sensors: oil pressure sensor, photoelectric sensor, extensometer.

Control mode: electro-hydraulic servo closed-loop control, control mode can be smoothly switched.

Display mode: computer screen display of test force, piston displacement, specimen deformation measurement value, and test curve, screen zeroing, calibration.

Main machine dimensions: approximately 1270mm×830mm×3100mm; piston raised.

Control cabinet dimensions: 1000mm×900mm×1100mm.

Oil pump motor power: 2.2 KW.

Beam movement motor power: 1.1KW.

Weight: approximately 7500KG.

7. Main Configuration:

8. Confidentiality of Technical Information and Data: 8.1 This technical proposal belongs to our company's technical data, and the user is obliged to keep the technical information and data provided by us confidential. This clause is effective for a long time, regardless of whether the proposal is adopted or not. 8.2 We are also obliged to keep the technical information and data provided by the user confidential.

9. Installation of the Testing Machine:

Install on a stable workbench or flat and solid ground.

Try to avoid places with high air flow, such as near doors and windows.

No significant electromagnetic interference in the environment.

Prevent direct sunlight or proximity to air conditioning equipment, etc.

Ambient temperature: 20±5℃ with hourly fluctuations less than 2℃; relative humidity: ≤80%.

Power frequency: 50Hz.

Power supply voltage: AC380±10V, 50Hz, power 3.0KW.

The power supply must have a grounding wire, which the user should pay special attention to. Since the machine has ground protection, if a power source without a grounding wire is used, there may be a risk of electric shock.

Level adjustment: Place the level on the test machine platform and adjust the four adjustable feet below to make the test machine platform level. At this time, the main machine is installed.

10. After-Sales Service:

The entire machine is guaranteed for 1 year, and the software system is serviced for life with free updates.

Free training for at least 2 laboratory operators until they can operate independently.

Regular visits to users, with service requests responded to within 2 hours and arrival at the user site within 4-12 hours.

11. Equipment Delivery Cycle: Generally 30 days.

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