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Basic knowledge of universal testing machines
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Tensile Testing Machine Clamped between two fixed balls. Between them, two clips move relatively. By moving the force value sensor in the clip and the displacement sensor built in the machine, the changes in force value and displacement during the experiment are collected to calculate the tensile, tear, strain and other performance indicators of the sample.
Main functions of tensile testing machine: Experiments and data processing can be carried out according to various standards such as GB, ISO, ASTM, and JIS. Applicable to universities, research institutions, and import and export commodity inspection.
The inspection centers of bureaus, quality inspection bureaus, and construction engineering construction material quality inspection offices will conduct various physical and mechanical performance tests such as tensile, compression, bending, shear, peeling, and tearing of metals, non-metals, composite materials, and products. Tensile testing machines are widely used in aerospace, petrochemicals, automotive parts matching, engineering plastics, wires, cables, plastics and rubber, fibers, ceramics, building materials, metal materials, polymer materials, waterproof materials, food and drug packaging and other industries for analysis and inspection. Tensile testing machines can measure various parameters of materials, such as tensile strength, compressive strength, bending strength, elongation at break, elastic modulus, stress, and strain. Wide force value expansion: High-precision sensor, wide expansion of test range. Deformation measurement options: Equipped with a large deformation measurement device, accurate measurement of elongation.
Tensile Testing Machine Calibration
After prolonged use, the tensile testing machine experiments may become inaccurate. Now let me summarize the solutions to this problem. This is for reference only. If there are major problems, be sure to contact the factory.
Calibration of the test speed of the tensile testing machine
When we calibrate the test speed of the testing machine
(1) First write down the starting position of the machine beam.
(2) Then select the speed value in the control panel (use a standard straight ruler to measure the crossbar travel).
(3) When the machine starts, the electronic stopwatch starts timing for 1 minute, and when the stopwatch reaches the time, press the machine stop button.
(4) According to the stopwatch time, the crossbar movement value is recorded at the speed of per minute (mm/min), the difference between the crossbar movement value and the straight ruler is observed, and the crossbar movement error value is calculated, which should not exceed 1%.
Calibration of various force values of the tensile testing machine
Open the operation interface of the tensile testing machine and click the calibration program. First, take the standard weight and gently hang it on the fixture connector to start the test, then record the computer display capacity, and calculate the difference with the standard weight. The error should not exceed 1%. If the error is large, there will be a problem with the sensor. After resetting the force value of the software, please test multiple times.
Displacement Calibration of Tensile Testing Machine
To do this, the current displacement must be reset, and then the modified interface must be opened. The interface displays the moving distance. This is actually an error and needs to be reset. In this way, the tensile testing machine will be accurate the next time it is tested.
Maintenance and maintenance of the tensile testing machine. During the experiment, pay attention to the position of the moving beam to ensure a good experimental space. Lubricate the screws with oil every month, and regularly check the condition of the lubricating oil in the reducer. Keep the equipment clean and clean the site after the exam. If any abnormal phenomenon occurs during the operation of the equipment, please immediately press the emergency stop button. For more information Salt spray test chamber, rapid temperature change test chamber, constant temperature and humidity laboratory For more information, please follow us.
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