The motor industry uses Sinowon ultrasonic hardness tester SU-400 to measure the motor shaft

In modern industrial production and scientific research, the measurement of material hardness is an important link. Traditional hardness testing methods such as indentation method often cause damage to the material, but the emergence of ultrasonic hardness tester overcomes this shortcoming. It uses the relationship between the propagation speed of ultrasonic waves in the material and the hardness of the material to achieve non-destructive testing of the hardness of the material.

The working principle of ultrasonic hardness tester is based on the difference in the propagation speed of ultrasonic waves in different media. When ultrasonic waves pass through an object, the wave speed is affected by the elastic modulus and density of the material. Generally speaking, the higher the hardness of the material, the faster the ultrasonic wave propagates in it. It measures the propagation time of ultrasonic waves in the material, combined with the known sound speed and density of the material, and can calculate the hardness value of the material.

This measurement method has many advantages. First, it is non-destructive and can be tested without damaging or affecting the performance of the material, which is especially important for finished product inspection or high-value parts. Second, it has a fast test speed and is easy to operate, which is suitable for rapid on-site testing. In addition, it can also realize on-site hardness testing of large components or structural parts, which is difficult for traditional hardness testers to do.

With the development of science and technology, the design and function of ultrasonic hardness testers are also constantly improving. Modern ultrasonic hardness testers integrate microprocessors and advanced data processing algorithms to improve the accuracy and repeatability of tests. Some devices are also equipped with functions such as digital display, data storage and wireless communication, making data recording and analysis more convenient.

Looking to the future, with the advancement of materials science and ultrasonic technology, its performance will be further improved, and its application range in the field of hardness testing will continue to expand. We look forward to this high-precision and high-efficiency non-destructive testing technology to bring more convenience and value to industry and scientific research.