Introduction to the method testing of universal testing machine

Jinan Hengsi grandly producedUniversal testing machineIt is a test machine instrument produced in accordance with national statutory standards, so that the universal testing function can clearly detect various properties of the material. The specific analysis of Jinan Hengsi Shanda Engineer will take you to understand.

The calibration method of universal testing machine is to clamp the standard tensile sample of the corresponding force value on the test machine according to the force value of the test machine to be tested on the test machine. The test machine will stretch the standard tensile sample according to the speed specified in GB/T228-2002. When the standard tensile sample is in a tensile state, an extensometer or a strain gauge is installed on it, so that the tensile test machine can continue to stretch the standard tensile sample. The extensometer or strain gauge displays the elongation amount of the standard tensile sample, convert the elongation amount into the tensile value, and then use theTension testerCompare the same force value points as the standard tensile test sample on the dial, and determine the technical status and accuracy of the test machine based on the difference in the comparison value. This method uses Hooke's law to compare the elongation amount of the standard tensile test sample into force value and the force value of the test machine dial to determine the accuracy of the test machine. This method greatly simplifies the verification operation process and brings great convenience and standardization to the daily verification of the original tensile state of the test machine.

Universal testing machineThe calibration method is characterized in that, first, the standard tensile sample is selected according to the force value of the tensile test machine in the tested range. The force value of the standard tensile sample is between 60% and 90% of the full range force value of the interval. The standard tensile sample is clamped on the tensile test machine, and the tension test machine is allowed to stretch the standard tensile sample according to the speed specified in GB/T228-2002 standard. When the pointer of the tensile test machine swings slightly, the stretching is immediately stopped, that is, the standard tensile sample is in tension. In this case, install an extensometer or attach a strain gauge to the standard tensile sample. The tensile tester continues to stretch the standard tensile sample according to the speed specified in GB/T228-2002 standard. The extensometer or strain gauge displays the elongation of the standard tensile sample. According to Hooke's law, the elongation is converted into a tensile value, and then compare it with the same force value point as the standard tensile sample on the tensile tester dial. The technical status and accuracy of the universal tester are determined based on the difference in the comparison value.