Leeb hardness tester is a kind of testing equipment. Its principle is with the development of single chip technology. In 1978, Dr. Leeb, a Swiss, first proposed a new method for measuring hardness. Its basic principle is that an impact body with a certain mass impacts the surface of the sample under a certain test force. The impact velocity and bounce back velocity of the impact body at 1 mm away from the sample surface are measured, A voltage proportional to speed is induced. Leeb hardness tester is a kind of measuring and testing instrument, which plays an important role in ensuring product quality and failure analysis. Therefore, choosing a good Leeb hardness tester is a key problem for users.
Hardness is an index to measure the hardness and softness of metal materials. Hardness value is not a physical quantity of a unit in fact. It is a comprehensive performance index that characterizes a series of different physical quantities such as elasticity, plasticity, deformation, strengthening rate, strength and toughness. Generally speaking, hardness refers to the ability to resist deformation and fracture in a small volume on the surface of metal. The practical value of hardness testing with portable Leeb hardness tester is that it does not need to damage the workpiece and can inspect parts in batches. It has become one of the important experimental methods for product quality inspection, reasonable process formulation and product quality analysis.