Thanks to a company in the electronics industry for purchasing theSinowon Rockwell hardness tester DigiRock DR3

The Rockwell hardness tester has been widely used in industrial production and has become the main means to test product quality and determine reasonable processing technology. It can test the hardness of various ferrous and nonferrous metals, hardened steel, tempered steel, annealed steel, surface hardened steel, plates with various thicknesses, cemented carbide materials, powder metallurgy materials and thermal spraying coatings. The Surface Rockwell hardness tester is used to test the hardness of sheet metal, thin-walled tube, surface hardened steel and small parts. With the aid of a Rockwell hardness tester, the depth of residual indentation produced by  the indenter can be measured by the differential depth method. Under the specified test load, the deeper the specified indenter penetrates the surface of the sample, the softer the tested material is.

Basic principle of rockwell hardness: accurate measurement of imprint depth.

Instructions for use of Rockwell Hardness Tester: Simply put, use the necessary force value to match different indenters, make a pit, and accurately measure the imprint depth.

The Rockwell hardness tester is divided into pointer and digital display.

1. The operation and use of pointer Rockwell hardness tester

How to use a Rockwell Hardness Tester: Simply put, use a certain force value to correspond to different indenters, make a pit and measure the depth of indentation.

The use method of the pointer Rockwell hardness tester is as follows:

The indenter is in contact with the sample, and the initial test force is loaded, and the large pointer turns three times (the small pointer reaches the red point); Load the main test force with the handle. When the pointer is stable, unload the test force with the handle and read the position of the big pointer on the dial.

2. The use of the digital Rockwell hardness tester is as follows:

When the indenter is in contact with the sample, the force value bar reaches OK (initial test force is loaded), the main test force is automatically loaded, automatically loaded and automatically unloaded, and the LCD screen automatically displays the Rockwell hardness value.