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The Principle And Characteristics Of The Portable Hardness Tester
Sep 25, 2018

The principle and characteristics of the Portable Hardness Tester

Let's talk about the principle and characteristics of the Portable Hardness Tester

The impact mass of the specified mass is impacted at a certain speed under the action of the elastic force, and the value calculated by the ratio of the rebound velocity to the impact velocity of the punch at a distance of 1 mm from the surface of the specimen is the Richter hardness. The Portable Hardness Tester is actually a modified version of the Shore hardness tester, which measures the residual energy of the impact body after the surface of the sample is plastically deformed by the sample.

Portable Hardness Tester

The Portable Hardness Tester is lightweight, easy to test, fast, and easy to read. It is suitable for testing metal materials with a wide range of hardness and can be tested from different directions. It is very suitable for large workpieces and assembly in the field.

The hardness test of the piece has a great technical improvement over the Shore hardness tester.

Its shortcoming is that this test method has not been universally accepted in the world. It has not yet been adopted by the International Organization for Standardization (ISO). The test data lacks international supervision and review from independent third parties or international organizations.

The Leeb hardness test requires the specimen to have a certain mass and thickness and is not suitable for testing small workpieces.

The Portable Hardness Tester is mainly used to quickly test large, assembled, inconvenient moving parts that do not allow cutting of samples. It is used to test large molds, large forged parts, and casting parts. It can flexibly test different parts of large workpieces. The hardness is a very effective and practical test method for the hardness test of large workpieces. It has a tendency to replace the Shore hardness tester in China.

The Portable Hardness Tester cannot test surface hardened workpieces. Testing small parts by coupling is often unreliable and there is currently a tendency to mislead small parts. For medium and small parts, the internationally accepted static hardness test method should be used as much as possible. As with the Shore hardness test, the comparison of the results of the Leeb hardness test is also limited to materials with the same or similar elastic modulus.