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Background. Multilayer metal materials have great prospects for application in various industries, such as nuclear, chemical and oil and gas. Proportionally, with the increase in the volume of production of these materials, there is an increase in the requirements for the quality of products, which is achieved by reducing defects. In this regard, special attention is paid to non-destructive testing methods, in particular, ultrasonic testing. The goal is to develop a technique for conducting ultrasonic testing and to make process maps for a new metal multilayer material. Materials and methods. The research method is ultrasonic non–destructive testing. The object of the research is a new multilayer material with tread pitting protection, which allows to translate pitting into general corrosion. Results. In the course of scientific work for a new multilayer material with tread pitting protection, the velocities of the plates being thrown and the angles of their collision were calculated. A technique has been developed to specify the technological processes of ultrasonic control. To detail the process of non-destructive testing of a material with one and two internal protectors, a technological map has been developed. To adjust the sensitivity of ultrasonic control, a prototype of the standard sample of the enterprise was made. As a result of the control, no unacceptable defects were found. Conclusions. The developed method of ultrasonic testing for a new material with tread pitting protection allows the most qualitative search for discontinuities on each of the interlayer boundaries with subsequent correction of kinematic parameters of explosion welding. |
