，以GB/T 12969.1-91 Ultrasonic Inspection Method for Titanium and Titanium Alloy Tubes 为主题。
Ultrasonic Inspection Method for Titanium and Titanium Alloy Tubes (GB/T 12969.1-91)
Titanium and titanium alloys are important materials in modern industrial production, primarily used in aircraft engine components, chemical and medical curing, and inner wall and tubing components. The application of ultrasonic testing method is particularly important for ensuring the quality of titanium and titanium alloy tubes.
The GB/T 12969.1-91 specifies the technical requirements for ultrasonic testing of titanium and titanium alloy tubes. It applies to accept the appearance quality and detect inner and outer defects of the materials used for making titanium and titanium alloy tubes. According to the standard, the ultrasonic instruments used for testing must meet the requirements in GB/T 4365-2007, GB/T 3414-2001, and/or other related international standards. Following elements should also be taken into account when inspecting the titanium and titanium alloy tubes:
1) Selection of reference levels, echo amplitudes, and measurement standards;
2) Selection of testing surface, aperture, scanning range and angle, and testing direction;
3) Calibrating the intensity of directivity, pulse-echo ensemble and harmonic echo ensemble of the ultrasonic instruments;
4) Selection of the surface entering mode and angle;
5) Connection between the pieces of equipment and operation procedures;
6) Interpretation and evaluation of the test results.
The reference echo intensity value depends on the type of material, test condition, and equipment used. The test follow the requirements of GB/T 1160-2001, GB/T 3415-2001 and/or other related international standards.
When evaluating the test results, it should depend on the requirements of body structure and conditions of the product design, the manufacturing standard stipulated by the relevant laws, the technology regulations in the product quality supervision and inspection regulations of the country, the association agreement between the product manufacturer and customer, and the inspection items, methods, sampling results and standards in the quality inspection report of the product.
The ultrasonic inspections should also be done regularly to maintain the quality of the titanium and titanium alloy tubes, ensuring the safety of industrial production and users in the process.
In summary, GB/T 12969.1-91 Ultrasonic Inspection Method for Titanium and Titanium Alloy Tubes provides guidelines on the selection of testing parameters, techniques and evaluations. The ultrasonic testing method have become an important process in ensuring the quality of titanium and titanium alloy tubes. Furthermore, regular ultrasonic testing is essential in order to maintain the quality of the product and ensure the safety of industrial production and users.
