Back
Knowledge

Leeb Hardness Tester measurement requirements

Abstract: 里氏硬度计测量样品时，需要遵循一系列要求以确保测试准确性。首先，测试表面应光滑、无氧化皮，且表面粗糙度需符合标准。样品必须具有足够的质量和刚度，以防测试过程中发生位移或反弹。样品的最小厚度应符合规定，同时，若样品有表面硬化层，其深度也应符合标准。对于不同曲率的试样，如凹面、凸面、圆柱面和球面，其表面曲率半径也应满足要求。此外，样品不应具有磁性，且各测量点之间的距离应大于3至4毫米，以避免重复测试导致的误差和传感器寿命缩短。

Requirements for the sample surface  

The test surface should have metallic luster, no scale and other dirt, and the surface roughness should meet the following requirements:

Leeb Hardness Tester Measurement Requirements with Figure 1

Specimen Weight Requirements

Specimens need to be of sufficient mass and stiffness to ensure no displacement or rebound during reconstruction. The quality should meet the following requirements:

Leeb Hardness Tester Measurement Requirements with Figure 2

Specimen Thickness Requirements

The sample should have sufficient thickness, and the minimum thickness should meet the following requirements:

Leeb Hardness Tester measurement requirements with Figure 3

The sample has a surface hardened layer, and the depth of the hardened layer should meet the following requirements:

Leeb Hardness Tester measurement requirements with Figure 4

For concave, convex, cylindrical and spherical specimens, the surface radius of curvature shall meet the following requirements:

Leeb Hardness Tester Measurement Requirements with Figure 5

Samples should not be magnetic.

The distance between each measurement point should be greater than 3-4mm, and the test cannot be repeated at the same point, otherwise a large error will be caused. At the same time, the service life of the sensor is shortened.

Leeb Hardness Tester measurement requirements with Figure 6

Products required
Relevant knowledge
Guess you like it