Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Znaleziono wyników: 3

Liczba wyników na stronie

Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

Comparison of the Classic and Hybrid Production Methods with the Use of SLM Taking into Account the Aspects of Sustainable Production Development

Terelak-Tymczyna Agnieszka, Bachtiak-Radka Emilia, Grzesiak Dariusz, Jardzioch Andrzej

Advances in Science and Technology. Research Journal

2023

Vol. 17, no 1

94--107

Problems on the world market, related to delays in supply chains, have forced enterprises to adopt a more flexible approach in the production processes of the offered products. In order to meet customer needs, companies can often look for alternative supply chains, as well as take over the production of key components necessary to maintain business continuity. Therefore, companies have to make important decisions in the context of management. A simulation model may be a tool helpful in making decisions related to production planning, which, based on the actual data collected from the process, allows for the verification of decisions before entering them into the real system. The motivation to conduct the research was the search for answers: How entrepreneurs, while maintaining profitability, can ensure the continuity of production processes by searching for alternative production methods. The article considers a comparison of two production processes for the production of a shield type product: classic production - on a lathe and hybrid production using the SLM method and machining only technologically significant surfaces on a lathe. The main goal of the research is to compare two production processes: classic and hybrid in terms of efficiency, energy efficiency and production costs. The research takes into account the use of different laser powers and the possibility of incremental production of several products at the same time. In order to achieve the assumed goal, a simulation model was used to carry out the research, which was developed on the basis of preliminary experimental studies. A series of simulations were performed, taking into account the variability criteria, and then the efficiency, energy efficiency and profitability of using alternative production methods were analysed.

The role of the additive manufacturing process parameters in the shaping of the surface geometric structure during micro-milling

Krawczyk Marta, Powalka Bartosz, Matuszak Marcin, Fryska Sebastian, Grzesiak Dariusz, Figiel Pawel

Journal of Machine Engineering

2020

Vol. 20, No. 2

86--93

The article presents the results of measurements of the geometric structure of the surface after micro end-milling. In the experiments, coated monolithic super micrograin cemented carbide micro end mills with 2 flutes were employed. The machined parts were additively made of CoCr alloy using Selective Laser Melting technology (SLM). Analyzed variables were the volumetric density of energy supplied by the laser during the SLM process and the feed rate during micro-milling. The results showed a strong influence of SLM process parameters on the surface roughness, which, according to the authors, results from the significant variability of the mechanical properties of the material as a function of the volumetric density of energy supplied during melting.

Selective Laser Melting of H13-TiB2 metal matrix composites - the role of volumetric energy density

Grzesiak Dariusz, AlMangour Bandar, Figiel Paweł, Fryska Sebastian

Journal of Machine Construction and Maintenance - Problemy Eksploatacji

2019

no. 1

47--52

The paper presents an analysis of the impact of the volumetric energy density delivered during the Selective Laser Melting (SLM) of a mixture of H13 tool steel powder and microcrystalline TiB2 , on the properties of the obtained metallic matrix composite. The results of measurements of density and hardness as well as microscopic analysis of six variants of the obtained composite, differing in the value of energy density provided by the laser beam and the number of passes of this beam on each fused layer, are presented. The results show that, in the case of a metallic matrix composite, the increase in the volumetric energy density supplied during the SLM process can lead to the deterioration of the material properties.

Artykuł przedstawia analizę wpływu objętościowej gęstości energii dostarczanej podczas selektywnego stapiania laserowego mieszaniny proszku stali H13 oraz mikrokrystalicznego TiB2 na właściwości uzyskanego w ten sposób kompozytu w osnowie metalicznej. Przedstawiono wyniki pomiarów gęstości i twardości oraz analizę mikroskopową sześciu wariantów otrzymanego kompozytu, różniących się wartością gęstości energii dostarczonej przez wiązkę lasera i ilością przejść tej wiązki na każdej stapianej warstwie. Wyniki pokazują, że w przypadku kompozytu w osnowie metalicznej zwiększanie objętościowej gęstości energii dostarczanej przy stapianiu może prowadzić do pogorszenia właściwości materiału.