title: ÐÐ¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ Ð¿ÑÐ¾ÑÐµÑÑÐ° Ð²ÑÑÐ¾ÐºÐ¾ÑÐºÐ¾ÑÐ¾ÑÑÐ½Ð¾Ð³Ð¾ Ð¿ÑÑÐ¼Ð¾Ð³Ð¾ Ð»Ð°Ð·ÐµÑÐ½Ð¾Ð³Ð¾ Ð²ÑÑÐ°ÑÐ¸Ð²Ð°Ð½Ð¸Ñ
title: Ð½Ð°ÑÑÐ½ÑÐ¹ Ð´Ð¾ÐºÐ»Ð°Ð´
titleType: Subtitle
title: Modeling the process of high-speed direct laser deposition
Creators: name: Ð¡ÑÐ°Ð½ÐºÐµÐ²Ð¸Ñ, Ð¡ÑÐ°Ð½Ð¸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: 2020
Subjects: ÐÐ°ÑÐµÐ¼Ð°ÑÐ¸ÑÐµÑÐºÐ¾Ðµ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ
ÐÐ°Ð·ÐµÑÐ½Ð°Ñ Ð¾Ð±ÑÐ°Ð±Ð¾ÑÐºÐ°
Ð¿ÑÑÐ¼Ð¾Ðµ Ð»Ð°Ð·ÐµÑÐ½Ð¾Ðµ Ð²ÑÑÐ°ÑÐ¸Ð²Ð°Ð½Ð¸Ðµ
Ð°Ð´Ð´Ð¸ÑÐ¸Ð²Ð½ÑÐµ ÑÐµÑ Ð½Ð¾Ð»Ð¾Ð³Ð¸Ð¸
ÑÐµÐ¼Ð¿ÐµÑÐ°ÑÑÑÐ½Ð¾Ðµ Ð¿Ð¾Ð»Ðµ
Ð³Ð°Ð·Ð¾Ð¿Ð¾ÑÐ¾ÑÐºÐ¾Ð²Ð°Ñ ÑÑÑÑÑ
direct laser deposition
additive technology
temperature field
gas-powder jet

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description: Nowadays, additive manufacturing has taken its place in materials processing technologies. Of the most popular additive technologies, the process of direct laser deposition is of greatest interest. The technology has found its place in the creation of large-sized aircraft industry products, propellers and water-jet propellers, large-sized brackets and machine parts, pressure vessels and similar products. The creation of a physically adequate model of the process will help to better understand the influence of technological parameters on the course of the direct laser deposition process, and will also provide an opportunity to calculate the change in the geometric and microstructural characteristics of the deposition product when changing technological parameters. Specialists when developing a technology for manufacturing a deposition product can demand such calculations. The proposed approach to constructing a mathematical model of the process is the main difference from previous studies in this direction. This work describes the elements of a mathematical model of the direct laser deposition process, developed primarily on analytical solutions used to describe complex physical processes. This allows you to reduce the amount of required computing resources, and thereby contributes to the rapid solution of problems without a significant loss in the accuracy of the result. The elements of the mathematical model are understood as the design elements of the model describing such physical processes as: heating and cooling of the target and the gas-powder jet, the gas dynamics of the gas-powder jet, the hydrodynamics inside the molten bath, and others. The direct laser deposition process itself involves many interrelated physical processes. The method of decomposition into separate physical processes was used as a research method. The process of heating the material by laser radiation is the initiating one; therefore, it is from this that the construction of the model of direct laser deposition begins. The results of the model of the heat transfer process are the input parameters for the models of hydrodynamics, gas dynamics and process stability parameters. The key parameters of the model are the power of laser radiation, the mass flow rate of the powder, the utilization rate of the material, the speed of movement of the working tool, and the thermophysical properties of the material. The studies performed and the results obtained give an idea of the dynamics of the temperature fields and the geometry of the layers formed in the process of direct laser deposition. The obtained mathematical model is used for the primary selection of technological parameters of the mode.