How to detect tensile testing machine verification method

The customer chose oneTension testerIn the future, how can we detect that the tensile testing machine used is qualified? Below is the technician of our company to learn about several important aspects when purchasing a testing machine.

The calibration method of universal material tensile test 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. The tensile test machine is allowed to stretch the standard tensile sample at 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. The tensile test machine of Jinan Hengsi Shengda Instrument Co., Ltd. continues to stretch the standard tensile sample. The extensometer or strain gauge displays the elongation amount of the standard tensile sample, converts the elongation amount into the tensile value, and then compares it with the same force value point as the standard tensile sample on the tensile test machine dial, and determines 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 MaterialsTension testerThe 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 electronic universal testing machine, and the tensile 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 rubber tensile test machine swings slightly, the stretching is immediately stopped, that is, the standard tensile sample is In the tensile state, an extensometer is installed on the standard tensile sample or a strain gauge is attached. 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 the tensile value, and then compared with the same force value point as the standard tensile sample on the tensile tester dial. The technical status and accuracy of the tester are determined based on the difference in the comparison value.

MoreTesting machineAll information is in Jinan Hengsi Shanda Instrument Co., Ltd.