Key technical indicators
Model specification WEW-50WEW-100DWEW-200DWEW-300DWEW-500DWEW-600DWEW-1000D.
Measuring range (kn)1~ 502 ~1004 ~ 2006 ~ 30010 ~ 50012 ~ 600 20 ~1000.
The range (%) is equivalent to the fourth gear, and there are no steps in the whole process.
Indication accuracy (%)1(2% ~100% f.s.)
Stretching spacing (mm) 0 ~ 5500 ~ 6500 ~ 7000 ~ 800
Compression space (mm) 0 ~ 6000 ~ 7000 ~ 8000 ~ 900.
Clamping diameter of circular sample (mm) φ 6 ~ φ 14
φ 14~φ22 φ 10~φ20
φ20~φ32 φ 13~φ26
φ26~φ40 φ20~φ40
φ40~φ60
Clamping thickness of flat sample (mm) 0 ~ 150 ~ 20
Clamping width of flat specimen (mm) 60 70 80 100
Shear sample diameter (mm) 10 None
The bending roller spacing (mm) is 80 ~ 400100 ~ 500100 ~ 600100 ~ 600.
Piston stroke (mm) 150 250
Power of oil pump motor (kW) 1.5
Lead screw motor power (kW) 0.55-0.75
Overall dimensions of the main engine (mm) are 480× 460×1875 920× 550× 2100 970× 600× 23501050× 650× 2550.
Overall dimension of oil source (mm) is 540× 510×1510.
Four. Purpose and scope of use of equipment
Microcomputer screen display hydraulic universal WEW series microcomputer screen display hydraulic universal testing machine can test and analyze the mechanical properties of various metals, nonmetals and composite materials, and is widely used in aerospace, petrochemical industry, machinery manufacturing, vehicle manufacturing, wire and cable, textile fiber, plastic rubber, ceramic building materials, food, medical packaging, metal materials, construction engineering and other industries, as well as universities, scientific research institutes, technical supervision, quality inspection stations and other departments; According to GB, ISO, ASTM, JIS, DIN and other standards, tensile, compression, bending, peeling, shearing, tearing, piercing, bursting and various high and low temperature tests can be carried out, and the yield strength, tensile (compression, bending) strength, elongation, elastic modulus and other parameters of materials can be detected.
Verb (abbreviation of verb) mechanical structure
WEW series microcomputer screen display hydraulic universal testing machine adopts the oil cylinder down-mounted main engine produced by introducing Shimadzu technology from Japan. The main engine consists of a frame, an oil cylinder, a piston, a wheel width sensor, a lifting motor, a reducer, a sprocket, a lead screw, a test bed, an upright post, an upper beam and a lower beam, and a hydraulic automatic fixture. The upper beam and the test bench are connected by two vertical rods, and the test space is adjusted by the lifting of the lower beam. The hydraulic control system consists of an oil tank, a high-pressure oil pump, an oil circuit board group, a working cylinder and a working piston. The whole machine is equipped with Italian imported oil pump unit, independent low-noise hydraulic clamping oil source and high-precision wheel width load sensor. The data processing and network operation of the test results can be carried out according to GB/T228 "Room Temperature Tensile Test Method for Metallic Materials".
Brief introduction of intransitive verb measurement and control system
WEW series microcomputer screen display hydraulic universal testing machine adopts microcomputer control and advanced hydraulic control technology, implements standardized unit design, and has the characteristics of high measurement accuracy, flexible configuration, easy replacement of accessories and convenient after-sales service.
5. Measuring system
④ Load measurement: spoke tension and compression sensors with high stability and accuracy of FS0.05% are selected, and the high-precision measurement amplification system ensures the high accuracy of the test force.
⑤ specimen deformation measurement: the deformation measurement of specimen is realized by electronic extensometer (small deformation measurement) and 24-bit A/D conversion single chip microcomputer acquisition system, and the data is processed by microcomputer.
⑥ Beam displacement measurement: The high-precision photoelectric encoder 1000P/R is used to move synchronously with the upper end of the moving piston, and the displacement of the moving beam (that is, the absolute displacement of the upper and lower chucks) is measured by digital circuit.
6. Hydraulic transmission system: Italy imported oil pump is adopted to ensure stable oil supply; High-pressure oil enters the high-pressure cavity of the oil cylinder through the precision oil delivery valve, and the high-pressure oil drives the afterburner to move to complete the loading of the sample;
7. Load frame: The frame structure consists of an upper beam and a workbench fixed by a polished rod with double guide rails, and the middle beam is driven by a double lead screw to move up and down to adjust the test space, which has the characteristics of reasonable structure, good stability and stable load.
8, data processing software package
The computer data processing software adopts the platform based on WindowsXP operating system, which has fast running speed, friendly interface and simple operation, and can meet the needs of different material testing methods. Meet the requirements of tensile, compressive and bending tests. If you have special requirements, you can customize the software. The software can be extended according to the needs of users. Can meet the requirements of GB, ASTM, DIN, JIS and other standards.
The software includes the following main functions:
The kernel takes Access database as the core and combines SQL language to facilitate data acquisition. It is convenient to add new experimental treatment methods. Main functions:
(1) Synchronous measurement and display of force, deformation and displacement.
(2) Real-time display of test curve.
(3) The data of a completed sample can be deleted at will.
(4) The curve can be scaled and printed at will, and the parameter points (yield point, elasticity, etc.). ) can be selected on the curve.
(5) VB+SQL language is used for parameter calculation, which is reliable and convenient.
(6) The tensile (compressive) strength, yield strength, δ0.2, non-proportional strength, total elongation strength and elongation rate of metal materials can be obtained according to users' requirements.
5. Microcomputer system: A microcomputer (including host computer, 17 inch color display, standard keyboard and mouse, large-capacity hard disk) is used as the host computer to complete the functions of setting up the whole machine test, data acquisition, operation processing, display and printing test results. Equipped with KQL-PowerTest200 1 Chinese version intelligent testing software package, it can measure and judge various performance parameters of various material tests according to national standards, international standards or standards provided by users, and make statistics and processing of data; Then output test reports and curve patterns in various required formats.
Five, testing machine technical indicators
Main technical indicators:
1, the force sensor is a wheel width tension and compression sensor with an accuracy of 0.05%FS, and the relative accuracy of the system is as high as 1% in the range of 2% ~ 100% fs.
2. Electronic extensometer, the accuracy is class C, and the relative accuracy of system deformation measurement is as high as 0.5% in the range of 2%- 100% fs. (Customers can choose according to the elongation of materials)
3. The displacement sensor adopts 1000 channel/circle photoelectric encoder, and the highest resolution can reach 0.1mm. ..
4. The measurement and control system adopts the measurement and control system of AD800 testing machine. The main indicators are as follows:
(1) Two analog input channels are used for force value and electronic extensometer measurement, and the number of AD conversion codes is 120000 (step-free measurement realized by high-resolution AD converter is better than four-step amplification).
(2) Manual operation box with 6 buttons (up, down, up clamping, down clamping, up releasing and down releasing).
Sixth, the performance characteristics
1, function
A) Automatic reset: When the computer receives the instruction to start the test, the measuring system will automatically reset;
B) Automatic saving: experimental data and experimental conditions are automatically saved to prevent data loss caused by sudden power failure and forgetting to save;
C) Testing process: measurement, display and analysis are all completed by microcomputer;
D) Display mode: data and curves are dynamically displayed with the test process;
E) Reproduction of results: test results can be accessed at will, and data curves can be reanalyzed;
F) Curve traversal: After the test is completed, the stress value and deformation data of the test curve can be found point by point with the mouse, which is convenient and practical for obtaining the test data of various materials;
G) comparison of results: multiple test characteristic curves can be superimposed, copied and amplified into different colors to present the analysis and comparison of a group of samples;
H) Curve selection: Stress-strain, force-time, strength-time and other curves can be selected for display and printing as required;
I) Batch test: After the test with the same parameters is set once, a batch of samples can be tested in sequence;
J) test report: (standard procedure)
(4) Tensile strength: maximum force, tensile strength, elongation at break and elastic modulus.
(5) Bending: maximum force, bending strength, deflection and elastic modulus.
(6) Compression resistance: maximum force, compressive strength, yield strength and elastic modulus. The test report can also be programmed and printed according to the format required by users.
K) Limit protection: mechanical limit protection;
L) Overload protection: Stop protection when the load exceeds 10% of the rated value;
M) Sampling rate: ≥50 times/second;
2. Hardware
The hardware system adopts the latest integrated circuit in the United States, and the full-scale resolution is the same. It overcomes the shortcomings of traditional testing machine, such as delay in step amplification switching and different resolution in different steps. The sampling rate of the system is accelerated, and the accuracy and stability of the measurement system are improved. Make the test results conform to the scientific and fidelity output.
3. Software
Software introduction:
MaxTest software adopts the latest software package of Microsoft Visual Studio combined with Microsoft developer network as our SDK (namely software development toolbox). The software interface takes VB and VBA as the main development tools, and the man-machine dialogue is highly intelligent, humanized, novel, concise and easy to understand, which completely achieves the effect of "fool" operation. Embedded Access data processing module makes data processing more convenient, fast and accurate. The data acquisition driver adopts Windows kernel-driven DLL technology, and the highest acquisition accuracy can reach1ms. ..
(1) the new Windows interface:
MaxTest software supports various Windows operating systems such as Windows 98/XP/2000, and adopts Chinese menu and Windows standard icon operation. The dynamic display of test data and test curve can delete and add test data at will, which makes the curve operation easier and can traverse, superimpose, separate, scale and print the curve at any time and place. Test data can also be obtained and edited manually, such as tensile strength δb, yield strength δb and δ0.2, elastic modulus e, etc.
② Multi-curve mode data tracking:
Track various curves, such as force-elongation, stress-strain, force-time, stress-time, elongation-time, strain-time, etc.
③ Modular, standardized and automated data processing with upgrade function;
Test data can be arbitrarily processed into data formats corresponding to any processing methods in the data module, such as stretching, compression and bending, and the name of the method corresponds to a test standard. The module integrates nearly 300 test standards, which can meet the domestic and foreign standards such as GB, ASTM, JIS, KIN, BS гOCT, and the standards are interchangeable. Test data can be saved automatically and permanently. According to the new test standards, users can also add new test methods to upgrade the software or ask manufacturers to provide new versions of the software.
④ Software linear correction of calibration data is more detailed:
Small load and small deformation (electronic extensometer) automatically check the fourth gear; So as to ensure that the accuracy does not exceed the tolerance.
⑤ The software comes with various Windows tools and management accessories:
From this software, you can directly call operating system accessories such as calculators and web browsers to classify, limit time and register for life, which is convenient for different personnel to manage and operate. The software also has a copy function to prevent the software from being leaked, modified and illegally copied.
Seven, standard preparation
1, tester host 1.
Includes: (a) 1 set of hydraulic oil source.
(b) Italy imports 1 oil pump.
(c) 1 load sensor.
1 electronic extensometer.
(e), photoelectric encoder 1000P/R 1.
2. Lenovo computer (P4, network card, 19 inch monitor) 1.
3. A4 color inkjet printer 1 set.
4. 1 set of special software for PC measurement and processing (tensile, compressive and bending test software)
6. 1 user-made computer desk.
7. Accessories
Comprises: (a) four sets of hydraulic clamping and stretching fixtures.
(b) 1 set of bending accessories
(c) Compression accessories: compression diameter Ф100 mm1+0 sets.
(d) Accessories can be made according to user's requirements.
8. Technical data: including
Instruction manual and maintenance manual (including control system principle and wearing parts diagram, etc.). )
Operating software user manual
Certificate of approval and packing list
Eight, equipment advantages
1, the main engine adopts lower cylinder structure, with low center of gravity and compact and stable structure;
2. Using hydraulic automatic clamping mechanism, the sample is firmly clamped and not easy to slide down, which reduces the labor intensity;
3. The wheel width load sensor has high precision and stable performance, which completely avoids the zero drift of the force value caused by the use of hydraulic sensors by other manufacturers and the influence of friction between the cylinder and the piston on the measurement results;
4, Italy imported oil pump unit, low noise, stable oil circuit without impact;
5. The hydraulic seal adopts double sealing structure to effectively prevent oil leakage and oil leakage;
6. The jaw protection plate is configured to effectively prevent the jaw splint from being scratched;