Electronic tensile testing machine calibration method, mainly divided into two kinds.
The first one: according to the electronic tensile testing machine test interval force value, select the standard tensile test specimen, the standard tensile force value choice for the range of full-scale force value from 60% to 90%, the tensile specimen clamping in electronic tensile testing machine, tensile of standard tensile test specimen according to GB/T228-2002 standard speed electronic tensile testing machine, immediately stop stretching slightly when the pointer swing, the standard tensile test specimen in tension, at this point in the standard tensile test specimen with drawing strain gauge or paste, stretch the standard tensile test specimen according to GB/T228-2002 standard to speed, extensometer or strain gauge will be standard tensile elongation the sample is displayed, according to Hooke's law, the elongation of conversion for the tension value, then the same with the dial and the standard tensile specimen force value points of comparison, to determine the technical conditions of electronic tensile testing machine and precision according to the comparison of the difference value, the electronic products in the design stage of further improvement of its inherent reliability.
Second: according to the electronic tensile testing machine test interval force value, the corresponding standard tensile test specimen clamping force value of the testing machine, tensile of standard tensile test specimen according to GB/T228-2002 standard speed test machine, when the standard tensile specimen in tension when it is installed on the extension of strain gauge or paste let the force, drawing on the standard tensile specimen to machine, extensometer or strain gauge will be elongation of standard tensile test specimen is displayed, the elongation of conversion for the tension value, and tensile testing machine on the dial and standard tensile specimens of the same force value comparison points, to determine the technical condition and the accuracy of electronic machine according to the comparison of the difference value.
This method is the use of Hooke's law according to standard tensile test specimen elongation conversion dint values and testing machine of wheel force values were compared to determine the electronic tensile testing machine precision. This method greatly simplifies the operation process of the test, which brings great convenience and standardization to the routine test of the electronic test machine.
The first one: according to the electronic tensile testing machine test interval force value, select the standard tensile test specimen, the standard tensile force value choice for the range of full-scale force value from 60% to 90%, the tensile specimen clamping in electronic tensile testing machine, tensile of standard tensile test specimen according to GB/T228-2002 standard speed electronic tensile testing machine, immediately stop stretching slightly when the pointer swing, the standard tensile test specimen in tension, at this point in the standard tensile test specimen with drawing strain gauge or paste, stretch the standard tensile test specimen according to GB/T228-2002 standard to speed, extensometer or strain gauge will be standard tensile elongation the sample is displayed, according to Hooke's law, the elongation of conversion for the tension value, then the same with the dial and the standard tensile specimen force value points of comparison, to determine the technical conditions of electronic tensile testing machine and precision according to the comparison of the difference value, the electronic products in the design stage of further improvement of its inherent reliability.
Second: according to the electronic tensile testing machine test interval force value, the corresponding standard tensile test specimen clamping force value of the testing machine, tensile of standard tensile test specimen according to GB/T228-2002 standard speed test machine, when the standard tensile specimen in tension when it is installed on the extension of strain gauge or paste let the force, drawing on the standard tensile specimen to machine, extensometer or strain gauge will be elongation of standard tensile test specimen is displayed, the elongation of conversion for the tension value, and tensile testing machine on the dial and standard tensile specimens of the same force value comparison points, to determine the technical condition and the accuracy of electronic machine according to the comparison of the difference value.
This method is the use of Hooke's law according to standard tensile test specimen elongation conversion dint values and testing machine of wheel force values were compared to determine the electronic tensile testing machine precision. This method greatly simplifies the operation process of the test, which brings great convenience and standardization to the routine test of the electronic test machine.
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