Abstract
The aim of the work is to obtain a finite element model of the additive growing process in the general case of a complex-shaped product using the 3DMP (3D Metal Print) method of wire deposition / surfacing by gas metal arc welding, visualization of the forming temperature fields. The problem is solved using the example of an elementary ring by creating a scalable model in the Ansys software package. The stages of creating a finite element model as well as the results of its approbation in the analysis of temperatures are given. The model visualizes the nature of the influence of the deposition / surfacing parameters on the temperature fields that are formed and dynamically change with the movement of the wire feedstock. In this case, the conditions of additive free shaping of a closed-form product are of no small importance. It becomes possible to visually assess the degree of heating and the volume of heated metal in the hazardous area, proceed further to the calculation of stress and strain fields in the grown product, and choose the correct technological parameters of the process. The obtained visual information makes it possible to perform a qualitative and quantitative assessment of the additive shaping result, to determine the required intensity of heat removal, which contributes to the grown product quality improvement as a whole.
Highlights
The most progressive technology for shaping parts in the manufacture of products in the aerospace and automotive industries, as well as general mechanical engineering, is additive growing
EBAM technology is distinguished by a high synthesis productivity and wider possibilities for the size of parts, but it is difficult to compete with traditional technologies in terms of economic indicators due to the need to create vacuum and the high cost of the equipment used
Since the 3DMP technology, by virtue of its peculiarities, implies a phased growing of products, the created ring was divided in the transverse direction of the axis into nine planes, with a distance between adjacent of 2.5 mm (Fig. 2, b)
Summary
The most progressive technology for shaping parts in the manufacture of products in the aerospace and automotive industries, as well as general mechanical engineering, is additive growing. The problem of obtaining a finite element model of the process of additive growth of a product using the 3D Metal Print method of wire surfacing by electric arc welding was solved using the example of an elementary ring.
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