How to operate the adjustment of tensile testing machine?

Uninvited! Regarding the landlord's question, the second child of the testing machine thinks that the adjustment method of the tensile testing machine is as follows:

1. Calibration method of test speed of tensile testing machine1) 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%.

2. Calibration of various force values of tensile testing machineOpen the operation interface of the 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 power value displayed by the computer, 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.

3. Displacement calibration of tensile testing machineThis requires resetting the current displacement and then turning on the school.

1. Turn on the power supply of the testing machine, confirm that the ground wire is connected, turn on the power switch, if there is a digital display, you can press the zero button, the tension and enter switch can be adjusted, and the desired position of the chuck.

2. After the metal tensile testing machine clamps the specimen, press the zero switch, select the required speed, press the tensile switch, then the specimen will be automatically stretched, when the specimen is broken, you can press "manual", "automatic". Enter.

Select the carriage return method and the display window shows the maximum tensile force and tensile length.

3. Calibration of force value: turn on the power supply, preheat for 5 minutes, connect with the upper and lower fixture holes of the machine with a standard force gauge, set the speed to the lowest gear, and then make the standard force gauge 500N, at this time, if the force value display window of the machine is 498N, it can be adjusted according to the following methods. Turn off the power switch, press and hold the calibration button and do not let go, turn on the power switch, and press the key clearly after 3 minutes of stability, so that the "11" on the right shows "00" to load the standard force such as:

After 100N is stable, press the calibration button to confirm; Then enter the value equal to the standard force of the load can be modified by pressing:" number: 100, after the completion press the calibration button to push, 2 seconds after the display of the calibration force. Value.

Electronic tensile testing machine operation skills:

1. Turn on the power of the electronic tensile testing machine first, and then turn on the power of the printer to make it stable for 20 minutes before further use.

2. Install the fixture and check the fixture.

3. Set the limit switch.

4. Set up the experimental method.

5. Set the speed of the experiment. Press speed, number, confirmation, set speed.

6. Enter the sample parameters.

7. Test: press the run button, the displacement will be automatically cleared, and the formal test will be carried out, and the two shortcut buttons "pause" and "emergency stop" can be used when the test is conducted.

8. Printing: After the test is firm, press the print number to confirm that it can be printed. Number 1 table print header; Confirm to print. Number 1 table print header; Print averages.

Bohui test instrument.

1.Specimen preparation: The tensile testing machine takes the gauge distance in the middle of the specimen or marks the punching holes with feet at both ends of the gauge as a mark, and uses the vernier caliper to measure the center and the smaller values of the three diameters at both ends as the calculation of the specimen cross-sectional area within the specimen gauge distance limit.

2.Preparation of tensile testing machine: First, investigate the basic structure and operation method of the data testing machine, and study the operating procedures of the testing machine.

According to the strength limit of the mild steel and the cross-sectional area of the specimen, the load required for the tensile specimen is preliminarily estimated, the appropriate measuring force disc is selected, equipped with a response hammer, the idear is opened, the measurement pointer is adjusted to zero, and then the position of the chuck under the testing machine is adjusted, and the specimen is clamped in the chuck.

3.Implementation: After clamping the specimen, the specimen is slowly and evenly loaded, actively installed on the testing machine, and the relationship curve between external force and deformation is drawn.

When the load is added to the point, the upper line of the tensile diagram marks the proportional relationship between the load and the change of the specimen at this stage, that is, the elastic deformation limit in accordance with Hooke's law.

The most commonly copied tensile testing machine is metallic materials. First, the sample is processed into a suitable specimen, such as a rod or dumbbell shape (according to the standard), installed on the testing machine, the control computer (or controller) is turned on, the tensile speed is adjusted, and the machine is clicked to start or start the machine, and it stops after the pull-off. The machine automatically records the relevant data, you can copy or save it, remove the specimen, mark it, and the test is complete.

HY-0230 Electronic Universal Material BAI Testing Machine is commonly used to achieve tensile or

Static trial back mode of DAO compression.

A: They are also known as tensile testing machines, and the types of tests that can be performed include tensile, compression, shear, flexure, peel, tear, cyclic, and flexure tests. According to the user's requirements, the maximum strength, elastic modulus (e), constant compressive strength, constant load elongation, yield strength, etc. of non-metallic materials can be obtained. Yield strength, non-proportional strength, total compressive strength, compressive (tensile) strength, elongation, etc. of metal materials.

Typical specimens: plastic films, rubber, fine wires, fibers and fine wires, aluminum foils, copper foils, photovoltaic welding tapes, solar panels, biomaterials, polymer materials, adhesives, foam materials, pharmaceutical industry, packaging, paper products, elasticity, wood products, thin metals, high-strength wires, components, fasteners, composite materials, etc.

1.Specimen making: Specimens are made in accordance with the requirements of the test standard, and their dimensions and other data are measured.

2.Power on: Turn on the software measurement and control system on the computer first, and then turn on the power of the testing machine. Select the appropriate test type according to the test you want to perform.

3.Test run: select the appropriate speed to make the testing machine run up and down, and make sure that the system is running normally.

4.New silver liquor annual construction record: according to the number of tests to be carried out to bury hail, the corresponding number of test records is newly created; And fill in the corresponding batch number, number, test environment, sample size and other relevant data.

5.Loading and placing the specimen: Adjust the position of the specimen on the testing machine and load and place the specimen.

6.Select the range: according to the range of the test force and deformation required for the test, select the appropriate test force and deformation gear (range).

7.Clear: Clears the test force, deformation, and displacement.

8.Start the experiment: Click the "Start Experiment" button to start the experiment.

9.End of Trial: The End of Trial button is automatically pressed after the test is completed. If you need to end the experiment halfway, you can also press the End of Trial button to end the experiment manually.

10.Test Results: Click the "Analyze" button to view the corresponding test results. Continue the test: click the "test" button to return to the test operation interface, click the "next" button to switch the test record to the next one, and repeat the 5-11 steps for the test.

11.Save data: If the test data needs to be saved, press the "Save" button to save the test data to the database for future reference.

Print report: If the test results need to be printed, press the "Output Report" button to output the test results to a Word document and print them.

12.Shutdown: First turn off the power of the testing machine, and then turn off the software measurement and control system and computer.

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.