1、 Product Introduction:

The design of WDW-5/10/20 microcomputer controlled electronic universal testing machine adopts advanced control concepts from abroad, which meets the national standards GB/T228 "Tensile Testing Method for Metallic Materials at Room Temperature" GB/T7314 "Compression Testing Method for Metallic Materials at Room Temperature" GB/T14452 "Bending Mechanical Properties Testing Method for Metallic Materials" and can meet GB, ISO, ASTM, DIN and other standards. Other corresponding standards can be added according to customer needs. Beautiful appearance, easy operation, stable and reliable performance. The computer collects and controls data through the fully digital control system developed by Fangyuan Company, and directly controls the rotation of the fully digital speed regulating motor through the Fangyuan fully digital speed regulating controller. After the speed is reduced by the deceleration system, the crossbeam is raised and lowered through a precision screw pair to complete mechanical performance tests such as tensile and peeling of the sample.

The professional software of the testing machine automatically calculates the maximum force, tensile strength and other data. The control and data processing of the experimental process by the computer control system comply with the requirements of the corresponding national standards for metallic and non-metallic materials, and the test reports are diversified in various ways such as WORD, EXECEL, etc.

The WDW microcomputer controlled electronic universal testing machine can be divided into eight models: WDW-5, WDW-10, WDW-20, WDW-30, WDW-50, WDW-100, WDW-200, and WDW-300. The machine has no pollution, low noise, high efficiency, and a wide speed range. This machine is suitable for testing the mechanical performance indicators of various metals, non metals, and composite materials, and fully meets the requirements of relevant national standards. This machine can be used to select different attachments for rubber, plastic, non-woven fabric, textile fabric, nylon, fiber, nanomaterials, polymer materials, composite materials, packaging tapes, paper, wire and cable, fiber optic cables, seat belts, safety belts, leather belts, shoes, tapes, polymers, spring steel, bearing steel, stainless steel (and other high hardness steels), castings, steel plates, steel strips, non-ferrous metals, automotive parts, alloy materials, and other non-metallic and metallic materials according to GB/ISO/ASTM/JIS/DIN standards. It can also be used for tensile, compressive, bending, peeling, shearing, tearing, puncturing, bursting, and various high and low temperature tests. It can also detect the yield strength, tensile (compression), and tensile (compression) of materials. Bending strength, elongation, non proportional strength, elastic modulus and other parameters; Material inspection and analysis in industries such as building materials, aerospace, machinery manufacturing, wires and cables, rubber and plastics, textiles, and home appliances; It is an ideal testing equipment for scientific research institutions, colleges and universities, industrial and mining enterprises, technical supervision, commercial inspection and arbitration departments.

2、 Technical parameters

3、 Software Overview

Based on the WINDOWS operating platform, the software has simple operation, powerful functions, and a human-machine dialogue structure. Adopting standard Windows XP style, easy to operate and learn

2. The software adopts modular design, with independent modules for creating different types of experiments, experiment control, and data analysis, separated from the main program. Can adapt to various types of experimental control and data processing

3. Experimental data can be added by users themselves, with no limit on the number. New experimental records can be created using templates, which is convenient and fast

4. Automatically complete the experimental process, determine the type of damage, and automatically record and save the experimental data. All experimental data are saved in internationally recognized XML format

5. Efficient experimental data management function, capable of quickly querying, loading, and deleting experimental data in multiple ways

6. At the end of the experiment, the system automatically analyzes and summarizes the test results, and the analysis method can be set by the user themselves

7. Flexible report editing function provides users with a dedicated report editing tool for graphic layout, which is easy to learn and can conveniently print test curves and related images and text

8. Users can delete experimental data as needed

9. Users can change the analysis method as needed, and the data can be modified and revised according to their own needs

10. Dedicated database management library module

11. Simultaneously record force time, deformation time, and force deformation test curves, which can be switched and observed at any time, zoomed in and out freely, moved horizontally or vertically, and sampled in real-time at high speed

12. Use human-computer interaction to analyze and calculate the mechanical performance indicators of the test material. At the end of the test, the system will automatically calculate the elastic modulus, yield strength, tensile strength, RP0.2/1.0, etc. On the basis of automatic analysis, manual intervention can also be used to correct the analysis results, improving the accuracy of the analysis

13. Provide multiple report printing interfaces, allowing users to edit reports in any format as needed

14. The experimental data adopts a standard database management method, which automatically saves all experimental data and curves. During the experiment, the experimental curves are displayed in real time. After the experiment is completed, the test data, curves, and specimen information of the specimens will be displayed in this operation window.

15. Data Query Window: Historical experimental data can be queried in the database by entering certain conditions, and the experimental data can be immediately found.

16. Automatic calibration window: The force value and deformation can be automatically calibrated. After our debugging is completed, if the user feels that the displayed values are inaccurate or the measurement and control parameters have been changed, they only need to click the automatic calibration button, and the system parameters will be restored to the debugging state.

17. Batch data processing and batch report printing window: It can summarize and analyze a batch of similar specimens, compare the measurement and control data, and calculate the average value. The specimens can be summarized and printed in batches. We can customize special test reports for customers. These are just a few representatives in various forms. The test report can also be edited and printed according to user requirements and equipped with relevant processing software (batch processing, control programmer, MaxDoc report processor, MaxXls report processor, etc.).

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Extended reading:

Calibration steps for electronic universal testing machine

1. Test speed correction:

First, record the position of the fixture under the machine, and adjust the speed setting button according to the "speed comparison table" on the right side of the machine to select the calibration speed. At the same time as starting the machine, start the electronic stopwatch for one minute. When the stopwatch reaches the time, press the UP or DOWE button on the machine. According to the time of the stopwatch, record the fixture travel value as the rate per minute (mm/min). Observe the difference between the fixture travel value and the straight steel ruler, adjust the speed setting button appropriately, walk the machine again to measure the correct value, and calculate the fixture travel error value, which should not exceed ± 1%.

2. Strength value correction:

Zero the display of the electronic universal testing machine, lightly hang a standard weight on the upper fixture connector, record the displayed force value, and calculate the difference with the standard weight weight. The error should not exceed ± 1%. Unit conversion: 1kgf=9.80665 Newtons

2. Calibration cycle: one year

3. Calibration equipment: standard weights, electronic stopwatches, and standard straight steel rulers

4. Calibration items: Strength value, travel distance

Installation and adjustment of WDW electronic universal testing machine spindle, support plate, and rotating block

The spindle, support plate, and rotating block are components of the force measuring mechanism of the WDW-50/100 electronic universal testing machine, and their installation and adjustment procedures are as follows:

1. The spindle and the support plate are fitted with tapered holes, and the fit should be tight. The small head of the cone neck shall not extend beyond the hole of the support plate. If there is any protruding part, it should be cut off or selected on the lathe (it is advisable to retract the small head of the cone neck into the cone hole by about 2 millimeters). After drilling, drill the taper hole and insert the taper pin.

2. Install the rotating block onto the spindle.

3. Install the spindle and pallet onto the adjustment tool, insert the tool's insert plate into the 40mm slot of the pallet through the spindle, and lock it with a locking nut. Using the bottom surface of the bent plate as the base, use a dial gauge to find that the parallelism of the inserted plate is within 0.03 millimeters, and then tighten the main shaft of the force measuring mechanism of the WDW-50/100 electronic universal testing machine with a nut.

4. Tighten the alignment tool onto the bottom plane of the rotating block at a 60 degree angle, and use screws to secure the rotating block onto the spindle. Dismantle other parts, drill the spindle and rotating block together, and then drill the taper hole. Finally, insert the taper pin.

Classification of elastic components of load sensors

The elastic components of the load sensor of WDW-50/100 electronic universal testing machine can be divided into elastic components for measuring normal stress and elastic components for measuring shear stress.

There are 8 types of elastic elements for measuring normal stress: 1 column type, 2 ring type, 3 beam type, 4 spoke type, 5 diaphragm type, 6 Schenck RT type, 7 S type, and 8 combination type

There are six types of elastic elements for measuring shear stress: 1. equal section cantilever beam type, 2. rectangular section cantilever beam type, 3. spoke type, 4. S-shaped, 5-axis, 6. circumferential beam type

The common features of the elastic components used for measuring shear stress on the WDW-50/100 electronic universal testing machine are that the beam is short and high, the strain gauges are attached to the side of the beam at a positive or negative 45 degree angle, and the beam ends (such as the inner and outer rings of the spoke wheel type) have particularly good rigidity; Axial elastic elements are often directly used as shafts for load-bearing wheels, crane hooks, and other structures, saving space and making them easy to use.