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What are the specific applicable conditions of the portable hardness tester?

Views: 197     Author: Site Editor     Publish Time: 2022-01-31      Origin: Site

At present, there are many methods for testing the hardness of objects, such as Brinell hardness, Rockwell hardness, Vickers hardness, Leeb hardness, and ultrasonic hardness. With the development of microprocessor technology, hardness testing methods have been recognized by many industries, among which hardness testers have been widely used, and portable hardness testers are also being popularized. The portable hardness tester developed and produced by Ebipro is composed of a display device and a measuring probe. It is connected by a cable. The diamond indenter at the front end of the measuring probe is in contact with the test piece. Under uniform pressure, the resonance frequency of the probe changes with the hardness. Test the hardness of the specimen by measuring the frequency change. Let me introduce to you the specific conditions of use of the portable hardness tester.

The following is a list of contents:

Efficiency condition

Site conditions

Test force conditions

Environmental conditions

Efficiency condition

The single measurement cycle of the portable hardness tester takes only 2 seconds, which is 15 times the measurement efficiency of the traditional desktop hardness tester. It can greatly improve the measurement speed and measurement efficiency, so there are many types of the same material, and the portable hardness tester is suitable for a full inspection or a large number of random inspections.

Site conditions

The hardness tester is a portable hardness tester, which can solve the problem of on-site measurement of the hardness of large workpieces. Therefore, if the sample is relatively large, it is not suitable for direct testing with a benchtop hardness tester.

Test force conditions

1. Because the traditional hardness tester uses a large test force, it is easy to leave a large test indentation on the sample, while the portable hardness tester has a small indentation and uses a diamond Vickers indenter. Marking requires a microscope of more than 200 times to be distinguished. Therefore, it is not easy to observe the measurement indentation left by the sample with the naked eye, and the portable hardness tester can solve this kind of problem.

2. Because the traditional hardness tester cannot measure the surface coating of most products, the portable hardness tester adopts a small load test force. After calibration, the hardness of the surface coating can be measured without damaging the finished product. To adjust and control the production process of large-scale products, and effectively ensure the production quality of products.

Environmental conditions

The portable hardness tester should work normally under the following conditions: the ambient temperature is 0-40℃, the relative humidity is not more than 90%; the surrounding environment has no vibration, no strong magnetic field, and no corrosive medium. The hardness of the upper tungsten carbide ball should not be less than 1500HV; the relative error of the indicated value should not exceed ±0.8%; the relative error of the repeatability of the indicated value should not exceed 1%. The surface of the test piece must meet the test technical requirements, flat and smooth, the surface roughness should reach 2um, clean and free of oil stains; the surface temperature of the sample should not be overheated.

The above are the specific applicable conditions of the portable hardness testing machine, shared by the portable hardness tester manufacturer Yibipu. Portable hardness testers are available. Welcome to consult.


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