title: ÐÐ¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð¸Ðµ ÑÐ¾Ð´ÐµÑÐ¶Ð°Ð½Ð¸Ñ Ð°Ð·Ð¾ÑÐ° Ð² ÐºÑÐ¾Ð¼ÐºÐ°Ñ Ð½ÐµÑÐ¶Ð°Ð²ÐµÑÑÐµÐ¹ ÑÑÐ°Ð»Ð¸ Ð¿ÑÐ¸ Ð³Ð°Ð·Ð¾Ð»Ð°Ð·ÐµÑÐ½Ð¾Ð¹ ÑÐµÐ·ÐºÐµ Ñ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸ÐµÐ¼ Ð°Ð·Ð¾Ñ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: Nitrogen diffusion in laser cutting of stainless steel
Creators: name: ÐÐ°ÐºÑÐ¸Ð¼Ð¾Ð², ÐÐ»Ð°Ð´Ð¸ÑÐ»Ð°Ð²
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: 2022
Subjects: ÐÐ°Ð·Ð¾Ð²Ð°Ñ ÑÐµÐ·ÐºÐ°
ÐÐ°Ð·ÐµÑÐ½Ð°Ñ ÑÐµÐ·ÐºÐ°
Ð¡ÑÐ°Ð»Ñ Ð½ÐµÑÐ¶Ð°Ð²ÐµÑÑÐ°Ñ
ÐÐ¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ
ÐÐ·Ð¾Ñ
ÐÐ¸ÑÑÑÐ·Ð¸Ñ

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description: Theme of qualification work: Â«Nitrogen diffusion in laser cutting of stainless steelÂ». In this work, the modeling of nitrogen diffusion in the process of laser cutting of stainless steel is carried out. Tasks of the final qualifying work: Literature analysis on the topics of laser cutting; Literature analysis on the topic of the influence of nitrogen on the structure and properties of steels; Simulation of nitrogen diffusion during laser cutting of stainless steel in the MATLAB software package; Analysis of the obtained results. The first chapter a literature review is presented on the theory and mechanisms of laser cutting, the effect of nitrogen on the properties of steel, the solubility of nitrogen in iron, the mechanisms of laser cutting, the mechanisms of removal of molten material and aerodynamic interaction in laser cutting, as well as an overview of the current research on these processes. The second chapter is devoted to the analysis of literature data on experimental studies of the structure and metal defects of high-nitrogen austenitic stainless steels after laser processing. In the third chapter of the work, modeling of the interaction of a gas jet with a melt during gas-laser cutting using nitrogen was carried out. A model of gas flow and the formation of a boundary layer are considered. To calculate the temperature field during cutting, a model of a fast-moving evenly distributed flat source of finite width in a plate was used. In this model, it was assumed that the distribution of energy from the source is uniform over the entire diameter of the heating spot due to the extremely high concentration of heat input in the types of cutting used. Using the model described above, the field of temperature and velocity was calculated in given coordinates in the plate at given times.