Introduction to the use of several most common hardness testers

Hardness tester is an instrument for measuring the hardness of objects. According to the degree of complexity, it can be divided into two types: simple hardness tester and complex hardness tester. There are many kinds of common hardness testers, including Brinell hardness tester, Vickers hardness tester, Rockwell hardness tester, etc. This article introduces the classification of eight common hardness testers to help you better understand the use of hardness testers.

1. Vickers hardness tester: used to measure the hardness of ferrous metals, non-ferrous metals, hard alloys (such as aluminum alloys) and surface carburizing and nitriding layers;

2. Brinell hardness tester: used to test unhardened steel, cast iron, non-ferrous metals and soft bearing alloy materials;

3. Brockwell Hardness Tester: It is a hardness tester that can test three hardnesses of Brinell, Rockwell and Vickers. More suitable for development and research use;

4. Rockwell Hardness Tester: It is used to test the hardness of various steel materials (including alloy steel and stainless steel). This is the most important and most commonly used type of hardness tester. There are electric Rockwell, digital Rockwell, digital surface Rockwell;

5. Shore hardness tester: an instrument used to measure the hardness of rubber, foam, plastic and other substances. There are mainly two types: HA and HD. The former is the hardness parameter of soft rubber, and the latter is the hardness parameter of harder rubber or plastic;

6. Leeb Hardness Tester: It is a relatively small hardness tester that can convert various hardness values. Mainly used for testing metal materials, especially for larger workpieces;

7. Pencil hardness tester: It is used to test the hardness of the coating. Clamp a pencil on the "cart" and let it slide on the coating, judging the hardness of the coating according to the hardness of the pencil and the scratches on the coating;

8. Ultrasonic hardness tester: It adopts the ultrasonic contact impedance method to compare and measure the samples. It has the advantages of high precision, fast speed, can measure thin parts, electroplating layers, etc., non-destructive, portable, and easy to operate.