title: ÐÐ¾Ð½ÑÐ°ÐºÑÐ½Ð°Ñ ÑÑÑÐºÐ¾Ð²Ð°Ñ ÑÐ²Ð°ÑÐºÐ° ÑÐ¾Ð¿ÑÐ¾ÑÐ¸Ð²Ð»ÐµÐ½Ð¸ÐµÐ¼ ÑÐ°Ð·Ð½Ð¾ÑÐ¾Ð´Ð½ÑÑ ÑÑÑÐ±
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Resistance butt welding of dissimilar pipes
Creators: name: ÐÐ²ÑÑÑÐ°ÑÐ¸ÐºÐ¾Ð²Ð°, Ð¯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: 2020
Subjects: Ð¢ÑÑÐ±Ñ ÑÑÐ°Ð»ÑÐ½ÑÐµ ÑÐ²Ð°ÑÐ½ÑÐµ
Ð¡Ð²Ð°ÑÐºÐ°
Ð­Ð»ÐµÐºÑÑÐ¾ÑÐ²Ð°ÑÐºÐ° ÐºÐ¾Ð½ÑÐ°ÐºÑÐ½Ð°Ñ
Ð´ÑÐ¿Ð»ÐµÐºÑÐ½Ð°Ñ ÑÑÐ°Ð»Ñ
Ð¼ÐµÑÐ¾Ð´ ÐºÐ¾Ð½ÐµÑÐ½ÑÑ ÑÐ°Ð·Ð½Ð¾ÑÑÐµÐ¹
duplex steel
finite difference method

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description: In the master's thesis, a heterogeneous connection of pipes of small diameter from duplex and low carbon steel is analyzed. The purpose of this work is to develop a physical and mathematical model for butt welding of dissimilar pipes from lowcarbon and duplex corrosionresistant steel with an assessment of the microstructure and mechanical properties of various weld zones. Tasks: 1. Analysis of scientific and technical literature on the use of duplex steels in industry, their chemical composition, properties and weldability. 2. Analysis of approaches to the simulation of thermal processes in butt welding with resistance. 3. Development of physical and mathematical models of contact welding of dissimilar pipes and software. 4. Analysis of the microstructure and mechanical properties of the welded joint. The work describes resistance welding by the resistance of butt joints from dissimilar steels, which makes it possible to increase the corrosion resistance of welded sections of pipelines in areas with increased environmental aggressiveness. The results of modeling the welding process are presented and the impact of welding technology on the welded joint is evaluated with recommendations for optimizing the welding mode. The results of metallographic studies of the microstructure of welded joints are presented.