Calibration method of Shanghai BILON electronic tensile testing machine.
Electronic tensile testing machine, also known as tensile machine, is mainly a mechanical testing machine for mechanical testing of mechanical properties such as tensile, compression, bending, shearing and peeling of metallic and non-metallic materials. The structural principle is to adopt electromechanical integration design, which is mainly composed of load cell, transmitter, microprocessor, load drive mechanism, computer and color inkjet printer. Mainly suitable for rubber, profiled materials, pipes, plastics
Various physical and mechanical properties of materials such as plastic films, plastic sheets, wires and cables. The fixture of the electronic tensile testing machine is an important part of the instrument. Different materials require different fixtures. It is also an important factor for the smoothness of the test and the accuracy of the test results.
The tensile test generally clamps the two ends of the material sample on two clamps at a certain distance. The two clamps separate and stretch the sample at a certain speed to measure the stress change on the sample until the sample fails. The tensile test of electronic tensile testing machine is one of the most widely used methods to study the mechanical strength of materials, which requires constant speed movement. According to the different load measurement methods, the early days can be roughly divided into two types of pendulum electronic tensile testing machine and electronic tensile testing machine.
Calibration method of electronic tensile testing machine
1. Speed ​​correction of electronic tensile testing machine:
1. First record the initial position of the machine cross arm, and select the speed value on the control panel (use a standard straight steel ruler to measure the cross arm travel).
2. At the same time when starting the machine, the electronic stopwatch starts to count for one minute.At the same time as the stopwatch reaches the time, press the stop button of the machine.According to the time of the stopwatch, the travel value of the crossarm is recorded as the rate per minute (mm / min). The difference between the shoulder travel value and the straight steel ruler, and the calculation of the travel error value of the shoulder, should not exceed ± 1%.
2. Power value correction of electronic tensile testing machine:
After entering the computer program, open the calibration interface, press the test to start, take a standard weight weight and hang it on the upper fixture connection base, record the computer display strength value, and calculate the difference from the standard weight weight, the error should not exceed ± 1%
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