10.14489/td.2024.07.pp.038-045

2024, 07 July

DOI: 10.14489/td.2024.07.pp.038-045

Batov G. P., Zharinov S. E., Chernov V. S., Yuryev A. E., Polozyukov D. A.
THE USE OF PHASED ARRAYS AND THE DIFFRACTION-TIME METHOD FOR QUALITY CONTROL OF ANTICORROSIVE SURFACING INSIDE CYLINDRICAL HOLES (CHANNELS) WITH DIAMETERS FROM 42 TO 440 MM IN FORGINGS
(pp. 38-45)

Abstract. Ultrasonic Testing (UT) of anticorrosive surfacing for the quality of fusion with the base metal and the presence of subsurface cracks is mandatory for use in nuclear, petrochemical and other industries. However, the control of subsurface cracks in holes with a diameter of 42 mm or more is not provided for in the regulatory documentation. The experience of using the UT of anticorrosive surfacing inside cylindrical holes with a diameter from 42 to 440 mm in the forgings of valve blocks of underwater gas production systems is presented below. At the same time, phased arrays were used to control the quality of fusion of anticorrosive surfacing with the base metal, and the diffraction-time method (TOFD) of control by specially developed non-standard asymmetrical ultrasonic beams sensors was used to control the subsurface cracks.

Keywords: ultrasonic inspection, anticorrosive surfacing, non-melting of the surfacing with the base metal, submerged cracks, phased arrays, diffraction-time method (TOFD).

+ - About the Authors Click to collapse

G. P. Batov, S. E. Zharinov (LLC "Scientific and Educational Center "Quality", Moscow, Russia) E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.
V. S. Chernov, A. E. Yuryev, D. A. Polozyukov (JSC Nizhny Novgorod Plant of the 70th anniversary of Victory») E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.

+ - References Click to collapse

1. Razygraev N. P., Ermolov I. N., Shcherbinskiy V. G. (1975). Ultrasonic quality control method for materials. Author's certificate No. 491092. [in Russian language]
2. Conformity assessment system in the field of nuclear energy use. Conformity assessment in the form of control. Unified methods. Ultrasonic testing of welded joints and deposited coatings. (2018). Ru Standard No. GOST R 50.05.02‒2018. Moscow: Standartinform. [in Russian lan-guage]
3. Non-destructive testing of welded joints. Ultrasonic testing. Application of time-of-flight diffraction (TOFD) method. (2022). International Standard No. GOST ISO 10863‒2022. Moscow: Rossiyskiy institut standartizatsii. [in Russian language]
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5. Krautkremer Y., Krautkremer G. (1991). Ultrasonic testing of materials: a handbook, 57 – 60. Moscow: Metallurgiya. [in Russian language]

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