News

Ultrasonic testing and dye penetrant testing: ensuring the quality of titanium material processing

The importance of non-destructive testing technology in titanium material processing is self-evident. Each batch of finished products must undergo strict non-destructive testing before leaving the factory, in order to ensure that there are no defects inside the titanium material and meet the various needs and product standards of customers. At present, ultrasonic testing is the most widely used testing method.
Ultrasonic testing
Ultrasonic testing, as the name suggests, is a detection method based on the principle of sound waves. It can accurately detect subtle defects inside welded parts, such as pores, cracks, inclusions, and pores. Its working principle is to utilize the propagation speed and reflection characteristics of ultrasound in different materials, and achieve accurate measurement of material or weld size defects or attenuation by measuring the relative changes and amplitudes of sound wave signals.
Dye penetrant testing
At the same time, dye penetrant testing is a visual inspection method mainly used to detect defects such as cracks, inclusions, and burrs on the surface of materials. This method involves uniformly spraying penetrant on the welding surface, cleaning off excess penetrant after 10-15 minutes of penetration, applying developer, and finally identifying defects through visual or microscopic observation under white light illumination of over 1000Lx.
Comparison of advantages and disadvantages
When comparing the advantages and disadvantages of dye penetrant testing and ultrasonic testing, we found that:
Although dye penetrant testing is simple and intuitive to operate, it can only detect surface defects and is powerless for deep-seated defects, and the operation process is relatively cumbersome.
Ultrasonic testing, on the other hand, can penetrate deep into the interior of welded parts and detect defects that are difficult to detect, resulting in higher accuracy, depth, and reliability. However, ultrasonic testing requires high technical personnel and expensive equipment, which to some extent increases the cost of testing.
Summary
In summary, dye penetrant testing and ultrasonic testing have their respective applications in titanium material processing. The former is mainly used for detecting surface defects, while the latter excels in detecting internal defects. In practical applications, we should choose the most suitable flaw detection method based on the characteristics of the product and the needs of the customer to ensure that the product quality reaches the optimal state.

[ 上一页 ] The difference and...[ 下一页 ] Several commonly u...