Familiar with the principle of Leeb hardness test can be very good application of Leeb Hardness Tester, this paper mainly introduces the test principle of Leeb Hardness Tester, and discusses and analyzes several aspects that affect Leeb hardness test, and puts forward the concept of effective quality and How to solve the conversion error between different hardness. Introduction to the principle of Leeb hardness test: Use an impact body of a certain mass to impact the test piece at a certain speed, and measure the impact velocity and rebound velocity at a distance of 1mm from the surface of the test piece by the impact head:
There are two points in particular to point out:
(1) Rebound speed and impact speed should be on the same straight line.
(2) The test piece should not shake or vibrate during the test, that is to say, the impact energy at 1 mm from the surface of the test piece is equal to the rebound energy at 1 mm from the surface of the test piece plus the impact on the surface of the test piece when the impact body hits the surface of The energy required to leave small pits without other forms of energy conversion.
Of course, there is no Leeb Hardness Tester that completely achieves the above two points, and it is impossible to do it, but it needs to be understood.
