Indentation reading method of micro Vickers hardness tester

Abstract

The invention discloses an indentation reading method of a microscopic Vickers hardness tester, which adopts the following test equipment: the microscopic Vickers hardness tester adopts a hardness test system when reading indentation. The hardness testing system comprises a hardness testing module, an indentation reading module, a loading precision control module and a hardness calculation output module, the hardness testing module is used for testing the Vickers hardness value of a sample, and the indentation reading module is used for controlling the indentation reading precision in the testing process. The loading precision control module is used for controlling the loading precision of test force, the hardness calculation output module is used for calculating the Vickers hardness value of an output sample, and the hardness test module is electrically connected with the indentation reading module and the loading precision control module. The indentation reading module and the loading precision control module are electrically connected with the uniform hardness calculation output module, and the device has the characteristics of high hardness testing efficiency and high indentation reading precision.

Description

technical field [0001] The invention relates to the technical field of hardness measurement, in particular to an indentation reading method of a micro Vickers hardness tester. Background technique [0002] The Vickers Hardness Tester is a new Vickers and Knoop hardness testing instrument that adopts precision mechanical technology, photoelectric technology, graphic image processing technology and material hardness analysis software. The Vickers hardness tester has a novel appearance and is controlled by a microcomputer. Through software key input, it can adjust the intensity of the measuring light source, preset test force holding time, switch between Vickers and Knoop test methods, file number and storage, etc. [0003] However, the existing Vickers hardness tester has low test efficiency and requires high test technology. The traditional indentation reading method has high requirements for the smoothness of the sample surface. It usually needs to make a special sample, whi...

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Problems solved by technology

[0003] However, the existing Vickers hardness tester has low test efficiency and requires high test technology. The traditional indentation reading method has high requirements for the smoothness of the sample surface. It usually needs to make a special sample, which is troublesome and time-consuming to operate. It is usually only used in the laboratory. in progress

At the same time, in terms of indentation reading accuracy and test force loading accuracy, the traditional Vickers hardness tester has simple functions and common indentation reading methods, which often have the disadvantages of inaccurate reading, manual adjustment speed, and slow algorithm response speed.

And because the accuracy of the test force loading is reflected by the accuracy of the sensor, when selecting the sensor range, generally control the value of the test object within 10%-90% of the rated range of the sensor to obtain a higher test accuracy. Larger sensors to measure physical quantities below 1% of the rated range will produce large test errors, resulting in inaccurate measurement of Vickers hardness values

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