WDW-300SCW Steel Wire Stress Relaxation Testing Machine
Product Description
1)Introduction
WDW-300SCW microcomputer controlled relaxation testing machine is mainly used for relaxation test of threaded steel bars, steel strands, and PC steel bars. It can detect the uniaxial tensile relaxation strength and other characteristics of metal wires. It can be widely used in quality inspection departments, construction units, steel strands and steel bar production enterprises. It is a new test equipment for modern building mechanics tests. It meets GB/T20065-2016 "Threaded Steel Bars for Prestressed Concrete" and GB/T10120-2013 "Test Method for Tensile Stress Relaxation of Metal Materials".
The design of the mainframe and auxiliary equipment of the testing machine draws on the advanced technology of Shimadzu of Japan. It has beautiful appearance, convenient operation, stable and reliable performance. The computer system controls the rotation of the servo motor through the controller and the speed regulation system. After the speed reduction system is decelerated, the moving beam is driven forward and backward through the precision screw pair to complete the relaxation mechanical property test of the sample. It is pollution-free, low in noise, high in efficiency, has a very wide speed regulation range and beam moving distance, and has a very broad application prospect. The machine is widely used in metal material inspection and analysis in the construction and building materials, aerospace, machinery manufacturing and other industries, and is an ideal testing equipment for quality inspection departments.
The mainframe of the test machine is compact and occupies a small space. The constant temperature and vibration-free conditions required by the relaxation test are easily met. The machine adopts a fully digital servo speed regulation system with high speed regulation accuracy and stable performance and a servo motor as the drive system. The controller is the core of the control system. The control and data processing software with WINDOWS as the operation interface realizes the screen display of the test force, test force peak value, beam displacement, test deformation and test curve. All test operations can be automatically completed on the computer through the mouse. Good humanized design makes the test operation easier.
Product Parameters
2)Technical Parameters
| Maximum test force |
300kN |
| Test force measurement range |
0.2%-100% |
| Test force accuracy |
better than ±1% |
| Speed adjustment range |
0-30mm/min |
| Sample specification |
Φ15.24mm (nominal diameter) |
| Load sensor creep |
30 minutes ≤0.02% |
| Displacement measurement accuracy |
better than ±0.5% of the indicated value |
| Noise |
<=35dB |
| Loading speed |
100~5000N/S, arbitrarily set |
| Effective stroke |
200mm |
| Tensile test stroke |
0-200mm |
| Test tensile space |
2000mm (customized according to customer requirements, the conventional size is 1200-1500mm) |
| Test machine mainframe type |
horizontal structure |
| Mainframe size (length x width x height) |
2400x600x800mm |
| Weight |
about 800Kg |
3)Main functions and features:
1.Host machine
1.1 The machine adopts a horizontal structure
1.2 The speed control system adopts a servo motor and a speed regulator, which has stable and reliable performance, and has overcurrent, overvoltage, overload and other protection devices. The speed control range can reach 0.001-30mm/min.
1.3 The transmission part adopts a circular arc synchronous toothed belt and a precision screw pair transmission, which has stable transmission, low noise and high transmission efficiency.
2. Control system, operating software and data processing system
2.1 Computer control system, with the advantages of high integration, stable performance, easy adjustment, etc. It can collect experimental data in real time, realize real-time dynamic display of experimental characteristic curves, and save test data files in the form of Access common database, which is convenient for customers to share resources and network management, as well as users to re-analyze.
2.2 Protection function: The machine has two limit protection modes, software and mechanical, and the proportion of automatic shutdown exceeding the maximum load can be dynamically set; it has multiple protection functions such as overcurrent, overvoltage, and overload.
2.3 Batch tests can realize hierarchical display of curves, and the curves automatically follow.
2.4 The software can realize user-defined speed setting and computer adjustment of speed. It can also realize high-precision speed calibration, and adjust the speed gear and encoding at any time.
2.5 Monitoring the test process: Real-time display of various parameters such as test force, displacement, curve, etc. during the test process.
2.6 Result reproduction function: After the test operation is completed and saved, it can be opened and re-analyzed at any time in the future according to user needs.
2.7 Curve point-by-point traversal function: You can click the force and deformation values on the curve with the mouse to obtain various parameters at each point.
2.8 1. The PC realizes closed-loop control of the control mode and program control of the test process, and various control modes can be switched without impact. The computer automatically completes the control, data acquisition, display and storage of the test process (main parameters: test force, relaxation force, relaxation rate or logarithmic relaxation rate). After the test is completed, the data can be analyzed and processed, and the test curves and test reports required by the user can be printed out. Various test curves required by the standard can be selected (residual test force or logarithmic residual force, relaxation force or logarithmic relaxation force, relaxation rate or logarithmic relaxation rate, temperature, etc. can be plotted with time or logarithmic time).
3.The computer software is developed based on Windows 7/Windows 10 platform, with beautiful interface and easy operation; the test force and deformation are displayed in the form of configuration instruments, which is very eye-catching; the built-in database is convenient for data history tracing and networking requirements; the report is operated in the form of templates, and users only need simple training to master it. The entire software has strong encapsulation, easy operation and comprehensive functions; there is a standard test program. By pressing the shortcut key, the test system can load the steel strand with 70% or 80% of the nominal maximum force within 3-5 minutes according to the standard requirements, and automatically start recording the test data within 1 minute, and automatically terminate the test after reaching the set time. The correlation coefficient between the test curve and the theoretical fitting curve reaches more than 99%, so the computer can calculate the test results of 1000 hours with the test data within 100 hours, and can also conduct 1000 hours of continuous tests, shortening the actual experimental time.
4.System configuration
1. Testing machine host: 1 set
1.1 Servo motor: 1 set
1.2 Speed regulator: 1 set
1.3 Load cell: 1 piece
1.4 Speed reduction system: 1 set
2. Full digital control system: 1 set
3. PIC high-speed acquisition card: 1 set
4. Computer control software based on Windows operating system: 1 set
5. Tools (provide special tools and lists required for installation, maintenance and operation): 1 set
6. Lenovo computer (LCD screen 19.5): 1 set
7. HP inkjet color printer: 1 set
8. Jaws required for relaxation test (φ15.2): 1 set
9. Temperature controller/extensometer: 1 set each
FAQ
1. Are you a manufacturer?
Yes, we are one of the largest manufacturer of every kinds of testing machines in China. In general, every machine shipped from our factory provides 12 months of free maintenance, taking into account shipping reasons. We can extend the maintenance period for our customers for 2 months.
2. Do you have after-sales service? How can I ask? What about warranty?
Before the delivery of the equipment, we will carry out the factory inspection and the equipment will be shipped after the inspection. If your machine does not work properly, you can contact us and we will try our best to communicate with you via email or skype video chat. We promise we will reply to you within 24 hours and with 3 Within a working day to provide solutions. After confirming that it is really necessary, we can send you new parts or on-site maintenance.
The service does not include mechanical failure due to the following reasons:
(1) Wrong operation;
(2) Privately modified;
(3) Failure caused by non-equipment itself
(4) Use environment that is not suitable for equipment operation. Such as high temperature, humidity, corrosive gas or vibration.
(5) Problems caused by movement or transportation.
(6) Consumable components.
(7) Natural disasters
3. What is the delivery deadline?
Most of the time, we have inventory at the factory. If not, the delivery time is usually 15 to 20 days after receiving the payment. If you need it urgently, we can consider making special arrangements for you.
4. What kind of packaging and transportation do you use?
Under normal circumstances, we will use ordinary orders such as DHL, Fedex, UPS TNT transport. Large orders will use aviation or shipping.
5. Can the device be customized? Can I customize my own design on the device?
We can not only provide standard machines, but we can also provide customized machines according to your needs.
At the same time, we can also place your trademark on the machine.
6. What kind of packaging do you use?
Plastic sealed and sturdy wooden box.
7. What payment methods do you support?
Paypal, T/T, Western Union,L/C
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