title: Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° ÑÐµÑ Ð½Ð¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ Ð¿ÑÐ¾ÑÐµÑÑÐ° ÑÐ²Ð°ÑÐºÐ¸ Ð´Ð¾Ð½Ð½Ð¾Ð³Ð¾ Ð¾ÑÐ½Ð¾Ð²Ð°Ð½Ð¸Ñ Ð¼Ð°Ð½Ð¸ÑÐ¾Ð»ÑÐ´Ð° Ð¿Ð¾Ð´Ð²Ð¾Ð´Ð½Ð¾Ð³Ð¾ Ð´Ð¾Ð±ÑÑÐ½Ð¾Ð³Ð¾ ÐºÐ¾Ð¼Ð¿Ð»ÐµÐºÑÐ°
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Development of the technological process of welding the bottom base of the manifold of an underwater mining complex
Creators: name: ÐÐ¾Ð²Ð¸ÐºÐ¾Ð²Ð°, Ð¢Ð°ÑÑÑÐ½Ð°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2021
Subjects: Ð¿Ð¾Ð´Ð²Ð¾Ð´Ð½ÑÐ¹ Ð´Ð¾Ð±ÑÑÐ½Ð¾Ð¹ ÐºÐ¾Ð¼Ð¿Ð»ÐµÐºÑ
ÑÐ²Ð°ÑÐºÐ°
ÑÐµÑ Ð½Ð¾Ð»Ð¾Ð³Ð¸Ñ
ÐºÐ¾Ð½ÑÑÐ¾Ð»Ñ ÐºÐ°ÑÐµÑÑÐ²Ð°
underwater production complex
welding
technology
quality control

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description: The theme of the qualification work: Â«Development of the technological process of welding the bottom base of the manifold of an underwater mining complexÂ». Work tasks: â analysis of domestic and foreign literature on the basic materials used and their weldability for the construction of the bottom base of the manifold; â select and justify the methods of welding the structure, welding consumables; â in accordance with regulatory documents select the type, structural elements and dimensions of welded joints; â calculate or select according to regulatory documents the welding mode for all types of joints; â develop a sequence of assembly and welding; â bring the methods used to control the manufacture of welded structures, the scope and standards of quality assessment in accordance with regulatory documents. In accordance with the requirements of the Russian Maritime Register of Shipping, Â«17Ð1Ð¡Â» steel was chosen for the manufacture of the bottom base of the manifold, which is welded without restrictions by any welding methods in a wide range of modes. Two methods are used for welding the structure: manual arc welding with covered electrodes and mechanized welding with a consumable electrode in a mixture of active gases and mixtures. Manual arc welding is used to join parts with complex geometry and in hard to approach places, as well as when making tacks. Mechanized welding is used when welding longitudinal extended seams of I-beams. For manual arc welding, electrodes of the Â«Ð­50AÂ» type, Â«Ð£ÐÐÐ-13/45PÂ», manufactured by the electrode factory St. Petersburg, are used, which are approved by the Russian Maritime Register of Shipping. For mechanized welding, copperplated welding wire of the Â«Ð¡Ð²-08Ð2Ð¡Â» brand is used in combination with carbon dioxide. Assessment of the quality of welding work is confirmed by visual-measuring control in the amount of 100 % and ultrasound and / or radiographic control in the amount of 20 % of the length of the weld.