The advantages and disadvantages of the cemented carbide hardness testing method are as follows:
- The advantages of Rockwell hardness testing are that it is easy to operate, fast, suitable for batch testing, and can be applied to different cemented carbide materials and samples of different thicknesses. However, because the indentation is small and may be affected by the surface roughness of the sample, special samples need to be prepared, and it is not suitable for measuring the hardness of finished products and thin plate materials.
- The advantage of Brinell hardness test is that the indentation is large, which can reduce the influence of surface roughness of the sample, and is suitable for measuring the hardness of finished products and thin plate materials. At the same time, since an impact body of a certain mass is used for impact testing, more comprehensive material hardness information can be obtained. However, special samples need to be prepared, the testing efficiency is low, and it is not suitable for batch testing.
- The advantage of microhardness testing is that it can obtain hardness information with high precision and spatial resolution, and is suitable for measuring the hardness of cemented carbide surface coatings, hardened layers, etc. However, it requires the use of a specialized microhardness tester and sample preparation process, and the testing efficiency is low.
- The advantage of Shore hardness testing is that it has faster testing speed and higher accuracy, and is suitable for rapid hardness testing in the production process of cemented carbide. However, since an impact body is used for impact testing, it may be affected by the surface roughness of the sample, and special samples need to be prepared.
- The advantage of Knoop hardness test is that it is suitable for hardness testing of cemented carbide sheets, strips and other materials, and the test results are stable and reliable. However, due to the need for scratch testing, the sample preparation process is relatively complicated and is not suitable for batch testing.
In summary, each cemented carbide hardness testing method has its advantages and disadvantages and needs to be selected and optimized according to specific application scenarios.
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