Brinell Hardness Tester is an instrument used to test the hardness of metal materials, typically used to measure the hardness of metal materials such as steel, aluminum alloys, copper alloys, etc. The instrument adopts the Blovian hardness testing method, which is a commonly used metal hardness testing method proposed by Swedish engineer Johan August Brinell in 1900.

The principle of the Blovian hardness tester is to use a metal ball of a certain specification and material to press into the surface of the tested metal, and characterize the hardness of the tested metal based on the diameter of the indentation left by the metal ball on the metal surface. The hardness value of the tested metal can be calculated by measuring the diameter of the indentation, usually expressed as the Blowe hardness value (HB).

The main advantages of the Blovian hardness tester are its simple and reliable testing, suitability for various shapes and sizes of metal materials, and minimal impact on the surface quality of the tested material during the testing process. At the same time, the instrument can also be used to test various high hardness metal materials, such as cast iron, non quenched and tempered steel, etc.

When using, the following points should be noted:

1. Ensure that the diameter of the metal ball and the testing force meet the standards to ensure the accuracy of the test results.

2. During the testing process, it is necessary to keep the surface of the metal being tested clean and ensure even contact between the metal ball and the metal surface.

3. When measuring the indentation diameter, a microscope should be used for precise measurement, and the hardness value should be calculated according to the Blowe hardness calculation formula.

Overall, the Brinell hardness tester is an important instrument widely used in the field of metal material hardness testing. Through this instrument, the hardness of metal materials can be quickly and accurately measured, providing important reference for the selection, processing, and quality control of engineering materials.