Influence of technological parameters of slm-process on porosity of metal products

Adjamskyi, S.V.; Kononenko, G. A.; Podolskyi, Rostislav

doi:10.37434/tpwj2020.10.03

The Paton Welding J.

2020

DOI: 10.37434/tpwj2020.10.03

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Influence of technological parameters of slm-process on porosity of metal products

S.V. Adjamskyi¹,

G. A. Kononenko²,

Rostislav Podolskyi³

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Cited by 6 publications

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References 13 publications

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“…Це дає безліч переваг: складна геометрія, зниження ваги, короткий час виконання замовлення, зменшення відходів, інтеграція функцій і т. д. При застосуванні технології SLM метал піддається впливу лазера, що призводить до його плавлення. Коли метал остигає, виникають напруження стиснення, які можуть призводити до зміни початкової форми (викривлення) виробу [5][6][7][8]. Будова металу деталей, виготовлених за SLM-технологією, має такі особливості, як дрібнозерниста структура, шаруватість, текстура в напрямку росту чи побудови ви- rials produced by layer-by-layer fusion using SLM technology, but they can significantly affect mechanical properties and geometric parameters.…”

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Аналіз Технологічних Способів Мінімізації Залишкових Внутрішніх Напружень При SLM

S.,

A.,

2024

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Additive manufacturing (hereinafter – en. AM) is a modern set of technologies that make it possible to quickly and qualitatively create products with a unique geometry that are impossible or difficult to produce by traditional production methods. Currently, re-searchers pay attention to two major areas, namely AM quality systems and the search for new regularities in already well-known materials that were produced in a traditional way. This technology has a number of advantages for the manufacture of aerospace products, but, like all production technologies, this technology has a number of disadvan-tages and problems. Residual internal stresses are one of the features of metal materials produced by layer-by-layer fusion using SLM technology, but they can significantly affect mechanical properties and geometric parameters. Their presence is especially important for AM materials, which inevitably lead to significant internal stresses. In this regard, it is important to minimize residual stresses in the process of manufacturing parts using SLM technology. To prevent deviations in the geometry of the part, it is necessary to take into account the ratio between the density of the specific energy supplied and its absorp-tion during the process. However, it is difficult to predict the optimal technological pa-rameters and strategies for building the SLM process for polycrystalline materials, since the quality of the product depends on a large number of factors. The search for ways of preliminary assessment and the development of measures to reduce residual stresses in the manufacture of parts using SLM technology is an urgent task of modern materials science. Thus, the issue of reducing the influence of internal stresses requires a funda-mental understanding of their influence on the geometric parameters and service charac-teristics of AM materials..

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Аналіз Технологічних Способів Мінімізації Залишкових Внутрішніх Напружень При SLM

S.,

A.,

2024

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Chemical composition based machine learning model to predict defect formation in additive manufacturing

Roy,

Swope,

Devanathan

et al. 2024

Materialia

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The Influence of the Main Parameters of the SLM Process on the Density of Volume Parts

Adzhamskyi,

Kononenko,

Podolskyi

et al. 2023

GoS

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SLM technology is gaining more and more distribution and application in many industries after it was possible to ensure a sufficiently high density of products. The technological parameters of the process significantly affect the quality of the products. Purpose: establishment of rational printing modes of volumetric samples, with a working thickness of the 316L powder layer of 40 microns to achieve a density of volumetric samples of 99.9%. Volumetric samples (10 × 10 × 3 mm) were produced on an Alfa-150 3D printer manufactured by ALT Ukraine LLC. Experimental manufacturing modes: power - 195 W, speed varied in the range of 800...900 mm/s with a step of 100 mm/s, distance between tracks – 0,08...0,11 mm with a step of 0,01 mm. Determination of the density of metal samples was carried out by the metallographic method on an optical microscope CarlZeiss AxioVert 200M mat. It was established that with the thickness of the applied layer of 40 μm metal powder of steel 316L, at a scanning speed of 800 mm/s and a distance between tracks of 0,08 mm during the production of volumetric samples using SLM technology, their density is 99,98%.

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Influence of technological parameters of slm-process on porosity of metal products

Cited by 6 publications

References 13 publications

Аналіз Технологічних Способів Мінімізації Залишкових Внутрішніх Напружень При SLM

Аналіз Технологічних Способів Мінімізації Залишкових Внутрішніх Напружень При SLM

Chemical composition based machine learning model to predict defect formation in additive manufacturing

The Influence of the Main Parameters of the SLM Process on the Density of Volume Parts

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