First of all, we must first understand what is the hardness, hardness refers to the ability of the metal surface to resist the intrusion of other harder objects. According to different detection methods, it can be distributed hardness, Chrom's hardness, Vickers hardness and Shore hardness, the more common are Brinell hardness, Chrome hardness, Vickers hardness, the network can also find these three Hardness conversion table!
Vickers hardness tester is mainly used for material research and scientific experiment. The low load Vickers hardness test is mainly used to test the hardness of small precision parts. The products are widely used in many industries. What are the advantages and disadvantages of the Vickers hardness tester? The following Xiao Bian will introduce it in detail, hoping to help users better use the product.
1, advantages:
Vickers hardness tester for thinner Vickers hardness measurement. The positive quadrangular pyramid diamond indenter was pressed into the surface of the sample under the test force. After the prescribed time, the test force was removed and the length of the indentation diagonal of the sample surface was measured. The indentation of the Vickers hardness tester is square, with clear outlines and accurate diagonal measurements. Therefore, the Vickers hardness test is a precision in the commonly used hardness test methods, and its repeatability is also very good. This is superior to the Brinell hardness tester. .
The Vickers hardness tester measures a wide range of values, from very soft materials (a few Vickers hardness units) to very hard materials (3000 Vickers hardness units).
The advantage of the Vickers hardness tester is that its hardness value is independent of the size of the test force. As long as it is a material with uniform hardness, the test force can be arbitrarily selected and its hardness value does not change. This is equivalent to having a uniform ruler over a wide range of hardness. This is better than the Rockwell hardness test.
In the medium and low hardness range, the Vickers hardness test and Brinell hardness test results in similar hardness values ​​on the same homogeneous material. The Vickers hardness tester can have a test force as small as 10 gF and a very small indentation, making it particularly suitable for testing thin and small materials.
2. Disadvantages Vickers hardness tester has low efficiency and requires high test technology. It requires high surface finish of test specimens. It usually needs to make special test specimens. The operation is troublesome and time-consuming. It is usually used only in the laboratory.
In combination with the above characteristics, the hardness test of the steel ball generally adopts the Chrome's hardness, but the hardness tester sold on the market can directly calculate the Vickers hardness and the Chrom's hardness.
The hardness of the steel ball is detected by surface inspection and heart detection. The steel balls with a size of more than 3mm are detected and surface inspection is used more frequently. Combined with the results of feedback from non-standard testing companies, most companies using steel balls are not professionals, testing methods are not professional, testing equipment is not calibrated, and hardness correction values ​​are not calculated after surface inspection, resulting in steel ball testing data. There is a big gap! Therefore, it is hoped that companies that use steel balls will carry out rigorous proofreading of inspection tools, conduct regular and effective training of inspection personnel, and perform correct calculations on inspection data. To prevent accidents in later use!
Guangdong Zhongshan Steel Ball Factory (Dry Run/Red Runtai Steel Ball) not only specializes in the production of precision ball steel balls, but also equipped with professional testing equipment and personnel. You can contact Wang Lisa 159 134 96591 at any time regarding steel ball testing and steel ball usage.
Vickers hardness tester is mainly used for material research and scientific experiment. The low load Vickers hardness test is mainly used to test the hardness of small precision parts. The products are widely used in many industries. What are the advantages and disadvantages of the Vickers hardness tester? The following Xiao Bian will introduce it in detail, hoping to help users better use the product.
1, advantages:
Vickers hardness tester for thinner Vickers hardness measurement. The positive quadrangular pyramid diamond indenter was pressed into the surface of the sample under the test force. After the prescribed time, the test force was removed and the length of the indentation diagonal of the sample surface was measured. The indentation of the Vickers hardness tester is square, with clear outlines and accurate diagonal measurements. Therefore, the Vickers hardness test is a precision in the commonly used hardness test methods, and its repeatability is also very good. This is superior to the Brinell hardness tester. .
The Vickers hardness tester measures a wide range of values, from very soft materials (a few Vickers hardness units) to very hard materials (3000 Vickers hardness units).
The advantage of the Vickers hardness tester is that its hardness value is independent of the size of the test force. As long as it is a material with uniform hardness, the test force can be arbitrarily selected and its hardness value does not change. This is equivalent to having a uniform ruler over a wide range of hardness. This is better than the Rockwell hardness test.
In the medium and low hardness range, the Vickers hardness test and Brinell hardness test results in similar hardness values ​​on the same homogeneous material. The Vickers hardness tester can have a test force as small as 10 gF and a very small indentation, making it particularly suitable for testing thin and small materials.
2. Disadvantages Vickers hardness tester has low efficiency and requires high test technology. It requires high surface finish of test specimens. It usually needs to make special test specimens. The operation is troublesome and time-consuming. It is usually used only in the laboratory.
In combination with the above characteristics, the hardness test of the steel ball generally adopts the Chrome's hardness, but the hardness tester sold on the market can directly calculate the Vickers hardness and the Chrom's hardness.
The hardness of the steel ball is detected by surface inspection and heart detection. The steel balls with a size of more than 3mm are detected and surface inspection is used more frequently. Combined with the results of feedback from non-standard testing companies, most companies using steel balls are not professionals, testing methods are not professional, testing equipment is not calibrated, and hardness correction values ​​are not calculated after surface inspection, resulting in steel ball testing data. There is a big gap! Therefore, it is hoped that companies that use steel balls will carry out rigorous proofreading of inspection tools, conduct regular and effective training of inspection personnel, and perform correct calculations on inspection data. To prevent accidents in later use!
Guangdong Zhongshan Steel Ball Factory (Dry Run/Red Runtai Steel Ball) not only specializes in the production of precision ball steel balls, but also equipped with professional testing equipment and personnel. You can contact Wang Lisa 159 134 96591 at any time regarding steel ball testing and steel ball usage.
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