Working principle and composition of microhardness tester

Microhardness tester is a device commonly used to measure metal hardness in recent years. Measuring hardness is by lifting the focusing mechanism, measuring microscope, and loading mechanism of the iqualitrol microhardness tester, correctly selecting the load and loading speed for fully automatic loading and unloading of the test force, and correctly controlling the test force retention time, and through the optical amplification of the microhardness tester.

By measuring the diagonal length of the remaining indentation after the diamond pyramid indenter is pressed into the object to be tested under a certain test force, and then calculate the hardness value of the object to be tested.

Correct use of microhardness tester

Since microhardness tests often measure the hardness of very small samples (such as needle tips) or small specific parts of the sample (such as metallographic structures), these situations are difficult to observe and judge with the human eye.

The indentation obtained after the microhardness test is very small, which is difficult for the human eye to find, let alone measure the diagonal length of the indentation, so a microscope is required to work.

To use a microhardness tester correctly, in addition to correctly selecting the load, loading speed, and dwell time, it is also very important to use the measuring microscope correctly. Here is a brief introduction on how to use the microhardness tester correctly.