One of the most common methods used for testing hardness of a metal includes Leeb rebound hardness test. The test ensures quality of work-pieces that are significantly large, majorly above 1 kg. The test, developed in 1975 is a portable testing technique that doesn’t use intricate traditional equipment. This test derives hardness value from the energy loss of defined impact body. After impact on a metal sample, the impact body takes the measure of energy loss by plastic deformation. The test, which is quite dynamic takes just a few seconds and assures the hardness quality of the product is maintained.
Leeb hardness tester is suitable for assessing quality of ferrous and non-ferrous materials. The Leeb scale can be converted into C&B, Shore, Rockwell, Brinell and Vickers Scale depending on the requirements. Materials that can be typically tested for the scale includes stainless steel, aluminium, bronze and copper, cast irons, alloy tool steel and cast steel among others. The test isn’t recommended for testing hardness of thin parts like thin walled, light weight parts and sheet materials.If you are wondering how Leeb testers ensure quality, then this is what you need to know. The test, unlike regular hardness testers is quite portable. It ensures accuracy and thereby quality because it can be used on large objects without a hassle. At the same time, instead of pressing the indenter into a material with a specific force, it determines value through the amount of energy lost during the impact, which provides further accuracy as load is applied instantaneously to the metal sample.
The addition of electronic sensors and carbide ball hammer give portable Leeb hardness tester an edge. Quality is assured through the use of a hammer powered by spring rather than by gravity. Meanwhile, a sensor measures hammer’s velocity for increased accuracy. Then, the results can be converted easily and related to the traditional hardness scales without a hassle. The simple procedure, therefore ensures that the product has required hardness.
This kind of tester is of prime importance in industries like chemical, utilities, automotive and petroleum because it provides an absolute measure of metal hardness and quality. At the same time, the portability of the tester and the ease with which it can be used ensures that the employees can regularly test the material for better quality and effectiveness.
One of the prime reasons why this tester should be used is the fact that it can be tested on a wide range of materials. Plus, it’s the simplicity, accuracy and the ease of usage that gives it an edge. Capable of providing strong results, the device can be of immense use for different industries, where it guarantees safety. These testers should also be give importance because of their portability, which allows them to be used virtually anywhere without the need for carrying hefty materials for hardness testing.
So, make sure that you get a portable hardness tester like Leeb to ensure quality of materials.