The tensile testing machine fails when used beyond the range 10

1.You can first check whether the wiring between the computer and the tensile testing machine is falling off, as this problem will also occur if the cable is dropped. 2.

The choice of sensor is also important, and this may occur if the range of the selected sensor is too small. 3.Sometimes the sensor will fail due to collision or other reasons, and these should be replaced or repaired at this time, so as to ensure the normal test data.

4.If you use the software calibration or calibration function before the problem occurs, you may have some problems with the prompt, so the above error message will also appear. 5.

For the calibration value must be accurate, check the exit configuration, and see if the calibration value, calibration value, or some other information in the parameters have been manually changed. Tensile testing machine.

The Testel rally testing machine offers two sets of test spaces, allowing the operator to have a wider range of use, especially when there is a large force gap between the raw material and the finished product. The floor type is used in the type, which is mainly used in steel wire, small screw fabrics and other industries. With a maximum test force of 50 kN, a long stroke and two test spaces, two sensors with different capacities can be installed, which can be used in applications where the test force varies greatly, such as in the analysis and testing of materials in the spring industry, steel wire industry, rubber and plastic industry, etc.

Common faults and solutions of tensile testing machine in the test process:

1.If the display is abnormal or the middle beam does not move during the test, check whether the limit is locked, if the limit switch is locked, loosen it and test again.

2.If the test force and displacement do not change during the test, check whether the connection and socket are good.

3.If abnormal sounds are found during the tensile test, stop the machine immediately to check the transmission system.

The five basic functions of the tensile testing machine are as follows:

1) Automatic stop function: after the specimen breaks, the moving beam will automatically stop.

2) Automatic calibration function: the system can automatically realize the calibration of the accuracy of the indication value.

3) Process realization function: the test light search process, measurement, display, etc. are all realized by the single-chip microcomputer.

4) Limit protection function: with program-controlled and mechanical two-level limit protection.

5) Overload protection function: when the load exceeds 3-5% of the maximum value of each gear, it will stop automatically.

1) Please check whether the four feet of the machine are evenly in contact with the pedestal, if not, please adjust the four feet to make them evenly contacted.

2) Check whether the system power supply voltage is normal and stable, if not, please replace a stable and normal power supply.

3) Check whether the screws of each part of the machine are loose, if they are loose, please tighten the screws. 1) Please make sure that the "test piece" is clamped correctly, if not, please clamp it accurately.

2) Please check whether the "Force Sensor" and "Decoder" settings are correct, if not, please refer to the operating instructions to complete the setting.

3) Please check whether you have pressed the "Force Reset Button" or "Deformation Reset Zero Button" before the test starts, if not, please restart the test and press the "Force Reset Button" and "Deformation Reset Reset Button" before the test.

The equipment has been used for a long time, there will be a little error, calibration is definitely needed Open the operation interface of the electronic tensile testing machine, click on the calibration program, we first take a standard weight weight and hang it lightly on the upper fixture connecting seat, click to start the test, and then record the computer to display the force value, and calculate the difference with the standard weight weight, the error should not exceed 1%, if there is a large error, it should be a problem with the sensor, try to reset the force value of the software and then test it many times.

If there is a slight difference between the measured force value and the standard weight after calibration, it can be solved by recalibrating it once, or it can be achieved by directly modifying the standard weight value data in the calibration table, if the software measurement value is larger than the standard weight value, the standard weight value of the second point in the calibration table can be changed to a smaller one, and then click the "Write the calibration data to the acquisition card" button, and then re-clear the comparison until the two values are equal.

Displacement calibration needs to reset the current displacement, and then open the correction interface, the interface shows the distance moved, this is actually the error, it should be reset and reset, so that the electronic tensile testing machine will be accurate when the next test.

We calibrate the test speed of the testing machine.

1) First of all, write down the starting position of the beam of the machine;

2) Then select the speed value on the control panel (use a standard steel ruler to measure the cross arm stroke);

3) Start the electronic stopwatch at the same time as the machine starts to time for 1 minute, and press the stop button when the stopwatch reaches the time;

4) According to the time of the stopwatch, record the cross-arm travel value as the rate per minute (mm min), observe the difference between the cross-arm travel value and the straight steel ruler, and calculate the cross-arm travel error value, which should not exceed 1%.

Various force calibration methods:

Open the operation interface of the electronic tensile testing machine, click on the calibration program, we first take a standard weight weight and hang it lightly on the upper fixture connecting seat, click to start the test, and then record the computer display force value, and calculate the difference with the standard weight weight, the error should not exceed 1%, if there is a large error, it should be a problem with the sensor, try to reset the force value of the software and then test it many times.

If there is a slight difference between the measured force value and the standard weight after calibration, it can be solved by recalibrating it once, or it can be achieved by directly modifying the standard weight value data in the calibration table, if the software measurement value is larger than the standard weight value, the standard weight value of the second point in the calibration table can be changed to a smaller one, and then click the "Write the calibration data to the acquisition card" button, and then re-clear the comparison until the two values are equal.

Correction of the force value of the tensile testing machine.

After the tensile testing machine enters the computer program, open the correction interface, press the test to start, take a standard weight weight and hang it lightly on the upper fixture connecting seat, record the power value displayed by the computer, and calculate the difference with the standard weight weight, and the error should not exceed 1%.

2. Speed correction of tensile testing machine.

1) First, record the initial position of the cross arm of the machine, and select the speed value on the control panel (use a standard steel ruler to measure the cross arm stroke).

2) At the same time as the starter, the electronic stopwatch starts to clock one Z minute, and the stopwatch reaches the time at the same time as pressing the stop button of the machine, according to the time of the stopwatch, the record of the cross-arm travel value is the rate per minute (mm min), observe the difference between the cross-arm travel value and the straight steel ruler, and calculate the cross-arm travel error value, which should not exceed 1%. Provided by Guohong Technology.

、Pre-test preparation:

1. Haida tensile testing machine.

2. Test requirements.

3. Test conditions.

4. Special fixture sleeve.

2. Requirements for tensile testing machine.

1. Tensile testing machine.

2. The load is 1500N

3. Three gears of load range: 500N, 1000N, 2500N, with low gear 4, accuracy: 1%.

5. Stretching speed adjustment (100 10) mm min6, clamp pliers, leather padding.

3. Test requirements Pair of shoes 2, clamp clamping test, degree (150 2) mm3, dry measurement, test temperature (20 2), phase humidity (65 2)% conditions for state adjustment for 48h

4. Wet measurement, test placed in (20 2) distilled water or away from water soaked for 1h 5, test steps:

1. A number of points of the whole shoe.

2. Peel off shoes.

3. The sole and upper are combined to peel off.

4. Clamping with tongs and clamps of tensile machines.

5. The peeling strength of each punctuation point is divided by the width of each punctuation point.

6. Peel strength at each point.

Sixth, the test knot.

1. The arithmetic mean of the test effect data is taken from the test result, the unit is Newton (N), and the effect number is in place;

2. Now slipping and breaking, the average deviation exceeds 10% of the test data, and the 3rd and third effect data should be retested.

When we use a tensile testing machine to do tensile and flexure tests on materials, there may be situations where the testing machine cannot work, and the tension or pressure is insufficient. If we encounter these problems, we will not be able to accurately detect the force properties of the material. Therefore, it is necessary for us to carefully study the phenomenon that the tensile testing machine cannot work properly, so that we can solve these problems in time.

Let's list these problems and solutions for your reference: the material is not deformed due to insufficient tension: the difference in the range of tension of the tensile machine, the pin determines the difference of the sensor used, and also determines the structure of the tensile machine, such as (small force value with desktop type, high force value with floor type).

A testing machine with sufficient tensile force is required to pull or crush the material. Transmission, screw can not provide enough power: transmission:

There are lead screw drive and rack drive, the former is expensive, used for high precision, and the test repeatability is high; The latter is inexpensive, used for low precision, and has low test repeatability. Lead screw: It has a decisive effect on the accuracy measurement of tensile force.

The general ones are ball screws, trapezoidal screws, and general screws. Among them, the ball screw has the highest accuracy, but its performance depends on the operation of the computer servo system to play, and the whole set is more expensive. The use of general lead screws and trapezoidal lead screws can achieve the required precision of flexible packaging, that is, precision.

Transmission, there are gear transmission and chain transmission, the former is expensive, and the nuclear bucket is rented for high precision; The latter is cheap and is used for low precision. Sensor, the main cost lies in the life, photoelectric induction is one of the more advanced technology, generally available more than 100,000 times. Of course, these are only the basic maintenance methods of the mainstream tensile machine (tensile testing machine), and the maintenance of each model is also different.

The configuration of the tensile machine will also affect the measurement accuracy: the three basic configurations are the main computer, the microcomputer, and the printer, and if the microcomputer is powerful, it can be printed directly. It can also be equipped with a regular computer.

With the electric change of ZhaoBrain, it is possible to carry out complex data analysis, such as data, local amplification, adjustable report form, and statistical analysis of group styles. If a computer is used, the manufacturer should add the corresponding control system. The tension stroke is not enough to make it impossible to apply the maximum tension value

According to the special requirements of the material, the minimum stroke of the general tensile machine is 500mm, and the maximum can be determined according to the special requirements.

The principle is to convert the force value signal into an electrical signal through a force sensor, or to convert the pressure signal in the hydraulic system into an electrical signal through a pressure sensor, and convert it into a digital signal through a data acquisition system, and display the force value through a display. The electronic testing machine has the characteristics of intuitive and high precision, which can automatically calculate, store, judge, print, and use conveniently, and can also be combined with the electronic extensometer to accurately draw the force value and deformation curve of the material and calculate various important parameters of the material. The operator should use the equipment correctly, strictly abide by the operating procedures, prepare carefully before starting, check repeatedly during starting, properly deal with it after stopping, make adjustments during operation, conscientiously implement the operating procedures and indicators, and do not allow over-temperature, over-pressure, over-speed, and overload operation.

Through operation exercises and technical learning, we can understand the structure, performance and use; It can be used, maintained, and troubleshooting. When using instruments and equipment, operators should master the prevention, judgment and emergency treatment measures of equipment failures, and keep the safety protection devices intact and easy to use; After use, the working power should be cut off to keep the parts, accessories and tools intact; And carefully fill in the equipment operation records, defect records, and operation of the old blind diary. <>

The results of the test can not be accurately calculated: the results of the tensile machine test can be set arbitrarily: maximum force value, elongation, tensile strength, constant force elongation, fixed elongation force value, yield strength, elastic modulus, maximum test force and other eight functions.

This is arguably the most comprehensive result of microcomputer operation. In addition to the above results, it can also calculate the average of the pulling forces for each period. Although the development of tensile machine in China has been buried for many years, the current situation is not optimistic, and the material testing machine is a special instrument for measuring the tensile force, pressure, bending and other mechanical properties of materials.

It is widely used in various fields such as machinery and plastics. The traditional tensile machine is a hydraulic pendulum testing machine, which has been used in China for more than 50 years and has made great contributions to the detection of mechanical properties of materials. However, with the continuous development of science and technology, the requirements for testing are getting higher and higher, and its existing problems are becoming increasingly apparent.

The main reactions are as follows. Because it is measured by the cooperation of several mechanical parts, it is not easy to achieve a high measurement accuracy. Due to the large number of mechanical parts, any part of the problem may cause the indication to be out of tolerance, and the maintenance is also more difficult.

But the operability is not high. Data can only be recorded manually, and functions such as automatic recording, storage, calculation, and printing cannot be realized. In recent years, the electronic tensile testing machine has appeared, which is a development direction of the testing machine in the future.