WAW-1000BMicrocomputer controlled electro-hydraulic servo universal testing machine

1、 Equipment name: Microcomputer controlled electro-hydraulic servo universal testing machine

Equipment model: WAW-1000B type

2、 Introduction

1. Host: WAW-1000B typeMicrocomputer controlled electro-hydraulic servo universal testing machineIntegrating automatic control, automatic measurement, data acquisition, screen display, and test result processing, the system uses a cylinder mounted host as a platform and is equipped with precision oil pumps, high-precision servo pumps, and PC servo controllers to achieve multi-channel closed-loop control and complete fully automatic control and measurement functions during the testing process. It has the characteristics of good professionalism, high reliability, and easy upgrading, and can be continuously enriched and improved with the development of testing machine measurement and control technology and changes in testing standards.

2. Scope of application:Mainly used for tensile, compressive, bending and other tests of metals and non metals. Suitable for fields such as metallurgy, construction, light industry, aviation, aerospace, materials, universities, research institutions, etc. The experimental operation and data processing comply with the requirements of GB/T228-2010 "Metallic Tensile Test Method for Room Temperature Materials".

3、 Manufacturing and inspection standards for products

1. GB/T16491-1996 "Electronic Universal Testing Machine";

2. GB2611-92 General Technical Requirements for Testing Machines;

3. GB/T6825.1-2002 "Inspection of static uniaxial testing machines - Part 1: Inspection and calibration of force measuring systems for tensile and/or compressive testing machines".

4. Technical requirements for mechanical equipment in GB1499.1-2007

5. Low voltage technical requirements of 2006/42/EC

6. Relevant specifications of 2006/95/EC

4、 Applicable test method standards

1. GB/T228-2010 "Tensile Test Method for Metallic Materials at Room Temperature"

2. GB/T7314-2005 "Test Method for Room Temperature Compression of Metallic Materials"

3. GB/T14452-1993 "Test Method for Bending Mechanical Properties of Metallic Materials"

4. JTGE30-2005 (JTG E30-2005) P87 Test Code for Cement and Cement Concrete in Highway Engineering

5. GB/T8653-1988 "Test Method for Young's Modulus, Chord Modulus, Tangent Modulus, and Poisson's Ratio of Metals"

6. GB/T10128 "Method for room temperature torsion test of metals"

5、 Basic structure and main functions:

1hostFor a two column main engine structure, the frame material is integral cast steel, and the high-precision grinding oil cylinder is placed under the main engine structure. This structure greatly reduces the height of the main engine, is easy to transport and install, and has stable and reliable performance. The lifting of the test bench is driven by motors, chains, and screws to adjust the stretching space, making the test operation convenient.

2Measurement and Control System:It consists of an electro-hydraulic control oil source, a fully digital PC servo controller, an oil pressure sensor, an extensometer for measuring specimen deformation, a photoelectric encoder for measuring displacement, a dedicated PC measurement and control card for the testing machine, a printer, a multifunctional testing software package, and an electrical control unit.

1) For the load adaptive oil inlet throttling speed control system, mature technology is used to design and manufacture modular units according to standards, specifically designed for use with microcomputer controlled hydraulic universal testing machines;

2) Select high-performance oil pumps and motors with reliable quality and stable performance;

3) The load adaptive throttle speed control valve independently developed and produced using unique technology ensures stable system pressure，Adaptive constant pressure differential flow regulation, no overflow energy consumption, easy to implement PID closed-loop control;

4) Pipeline system: Stable performance group kits are selected for pipelines, joints, and their seals to ensure reliable sealing of the hydraulic system and prevent oil leakage faults.

5) Characteristics:

① Low noise, below 50 decibels at maximum working load, basically in a silent state.

② Pressure follow-up saves 70% energy compared to conventional equipment

③ High control accuracy, with a control accuracy of up to one ten thousandth. (Usually 0.5%)

④ No control dead zone, with a starting point of up to 1%.

⑤ The oil circuit is highly integrated with few leakage points.

4. Electrical control cabinet:

1) All strong electrical components of the system are centralized in the strong electrical control cabinet, achieving effective separation between the strong electrical unit and the weak electrical unit for measurement and control, ensuring that the measurement and control system is not disturbed and operates stably for a long time;

2) Manual operation buttons are installed on the electrical control cabinet, including power switch, emergency stop, and oil source pump on/off.

5、High resolution digital controller

a) The system is mainly composed of PC computer, fully digital PID regulation, equipped with PC card amplifier, measurement and control software, and data acquisition and processing software, which can achieve closed-loop control of test force, sample deformation, piston displacement, and smooth switching of control modes;

b) The system consists of three signal conditioning units (test force unit, oil cylinder piston displacement unit, specimen deformation unit), control signal generator unit, high-precision servo pump drive unit, high-precision servo pump oil source control unit, necessary I/O interfaces, software system, etc;

c) The closed-loop control loop of the system consists of measurement sensors (pressure sensors, displacement sensors, deformation extensometers), high-precision servo pumps, controllers (various signal conditioning units), and control amplifiers to form multiple closed-loop control loops, achieving closed-loop control functions for the testing force, cylinder piston displacement, and sample deformation of the testing machine; It has multiple control modes such as constant rate test force, constant rate piston displacement, and constant rate strain, and can achieve smooth switching of control modes, making the system more flexible.

6. Test machine dedicated PC board card type automatic control amplifier:

a、 Pluggable PC board, designed specifically for testing machines using advanced computer bus control technology, with programmable analog amplifiers, A/D conversion, digital acquisition channels, digital I/O, etc;

b、 This dedicated measurement and control card forms a single card measurement and control system with a PC, which can be directly connected to sensors for measurement and data acquisition, making complex measurement and data acquisition systems simple and reliable;

c、 Adopting computer bus technology, directly inserted into the computer expansion slot, fully digital circuits, zero adjustment, gain adjustment, etc. are all implemented through software, making it the latest product unit in the development of testing machine measurement and control technology;

d、 Gain programmable cascaded amplifier, which can obtain amplification factors of different gains;

e、 The sensor bridge power supply and the reference voltage of the A/D chip share the same voltage, and the entire measurement system attenuates year-on-year, achieving hardware compensation technology for the bridge power supply;

f、 By using multi bit A/D conversion to meet the sensitivity and resolution requirements of the system, the software frequency doubling method is avoided from reducing the system's characteristics.

7Test national standard software package:

a、 Under the Windows 7 operating system platform, the user interface is entirely in Chinese;

b、 The computer screen displays test force, piston displacement, loading rate, deformation test data, and can draw various test curves such as time test force/deformation, deformation test force, etc; Automatically process data using methods that meet the requirements of GB/T228-2010 standard, including upper and lower yield points, maximum force points, various specified non proportional stress points, and various specified full elongation stress points, while also meeting the pressure testing requirements of the testing machine;

The software also provides data analysis functions to meet the needs of experimental personnel for experimental analysis and data processing for special experiments;

c、 Has strong graphic operation functions, such as dynamic test curve and digital display function, graphic enlargement and clipping function, cursor following display function, etc;

d、 Adopting VXDs high-speed data acquisition technology to achieve multi-channel (up to 16 channels) high-speed data acquisition;

e、 The system has complete file operation functions for storing test curves and test data. Test data can also be stored in ASCII code format for users to perform secondary data processing;

f、 Capable of outputting single test reports and printing batch test reports;

h、 The control system has protection functions such as overload, over setting, power-off, and piston reaching the limit position;

i、 Hydraulic clamping oil source: an independent low-noise hydraulic clamping oil source that controls the clamping and loosening of the chuck.

J、 In metal tensile testing, parameters such as Fm, Rel, Reh, Rp, Rt, Agt, Z, A, Rm, etc. can be automatically calculated, and Fel, Fm, etc. can also be manually identified and printed based on the results. Reports and curves with different contents can be printed according to requirements.

6、 Main technical indicators:

1. Maximum test force: 1000kN;

2. Test force measurement range: 1% -100% FS; Testing machine level: Level 1

3. Number of columns: 2 columns

4. Test power resolution: 1/300000 of the full range in one direction (there is only one resolution in the full range, no gear division, and no range switching conflicts)

5. Accuracy of experimental force:≤Relative error of indication ± 1%

6. Displacement measurement resolution: meets the requirements of GB/T228.1-2010 standard.

7. Relative error of displacement indication: ± 1%

8. Relative error of displacement indication: ± 1%

9. Relative error of deformation indication: ± 1%

10. Loading rate range: 0.02% -2% FS/s

11. The maximum distance between the stretching clamps shall not be less than 600mm

12. Maximum compression space: 550mm

13. The maximum stroke of the piston is not less than 250mm

14. Maximum speed of piston movement: 100mm/min

15. Flat specimen clamping thickness: 0-20;

16. Circular specimen clamping diameter: Φ 26- Φ 40-60;

17. Maximum spacing between curved supports: 400mm;

18. Column spacing: 570mm;

19. Piston displacement indication accuracy: ± 0.5% FS;

20. Deformation measurement resolution not less than 1/300000

21. Deformation measurement accuracy: ± 1%;

22. Clamping method: hydraulic clamping

23. Sensors: oil pressure sensor, photoelectric sensor, extensometer;

24. Control mode:Electro hydraulic servo closed-loop control, with smooth switching of control modes；

25. Display mode: The computer screen displays the measured values of test force, piston displacement, sample deformation, and test curve, and the screen is zeroed and calibrated;

26. Host size: approximately 950mm × 850mm × 2450mm;

27. Control cabinet size: 1010mm × 650mm × 870mm;

28. Oil pump motor power: 2.2KW;

29. Power of the crossbeam moving motor: 1.1KW.

7、 Main configuration list:

1. The main unit of the testing machine is equipped with a hydraulic clamp and a chrome plated light bar

2. Digital closed-loop measurement and control system

(Can achieve three closed-loop control of force, deformation, and displacement, and achieve impact free switching during the experimental process) One set

One 3.5-liter/minute oil source

4. One high-precision oil pressure sensor

5. One displacement sensor

6. The main unit of the testing machine (two columns) is equipped with an appearance patented product as the oil source.

7. Oil temperature controller

8. One electronic extensometer: gauge length gauge length: 50mm deformation amount: 10mm (conventional)

9. One Lenovo commercial computer and one HP inkjet printer;

10. One set of stretching fixtures: plate specimen clamp block 0-20mm; cylindrical specimen clamp block: Ø 26- Ø 40-60mm

11. A set of compression testing equipment

12. Professional testing machine software has multiple control methods, among which single step programming includes various closed-loop control methods such as constant stress, constant strain, constant displacement, displacement holding, and force holding, and multi-step programming includes metal tensile testing, etc,

13. N46 anti-wear hydraulic oil 75L, customer provided

14. The weight of the equipment shall not be less than 3000kg

15. Free software upgrade, free replacement of parts within one year warranty period, and free personnel training provided

8、 Confidentiality of Technical Intelligence and Information:

1. This technical solution belongs to our company's technical information, and the user shall assume confidentiality obligations for the technical intelligence and information provided by us. Regardless of whether this solution is adopted or not, this clause shall remain valid for a long time;

2. We should also assume confidentiality obligations for the technical intelligence and information provided by users.

NineInstallation of testing machine

1. Installed on a stable workbench or a flat and sturdy ground;

2. Try to stay away from places with high air flow, such as doors and windows;

3. There is no obvious electromagnetic interference in the environment;

4. Prevent exposure to sunlight or getting close to air conditioning equipment, etc;

5. Environmental temperature: 20 ± 5 ℃ and fluctuation less than 2 ℃ per hour; Relative humidity: ≤ 80%;

6. Power frequency: 50Hz;

7. Power supply voltage: AC 380 ± 10V 50Hz power 3.0KW.

8. √ It is required that the power supply must have a grounding wire, and users should pay special attention to this.

Due to the grounding protection of the machine, if a grounded power supply is not used, there is a risk of injury in case of leakage.

9. Horizontal adjustment: Place the level on the testing machine platform and adjust the four adjustable feet below to make the testing machine's testing platform level. At this point, the host is already installed.

10、 Product after-sales service

1. The equipment comes with a 1-year warranty for the entire machine and a 1-year warranty for the software system, with lifetime service and free software updates in the later stages;

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

3. Regularly visit users, respond within 2 hours to their service requirements, and arrive at the user site within 4-12 hours;