Investigation of additive manufacturing from the heat-resistant steel powder produced by recycling of the machining chips

Razumov, Nikolay; Masaylo, Dmitriy; Silin, A. O.; Борисов, Е. В.; Ozerskoy, Nikolay; Goncharov, Ivan; Popovich, Anatoliy

doi:10.1016/j.jmapro.2021.02.025

Cited by 15 publications

(7 citation statements)

References 23 publications

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“…Milling techniques can include: (1) attritor ball milling that can be categorized as dry grinding or wet grinding, using regular speed (to 400 rpm) or high speed (400–1800 rpm) attritors [ 10 , 16 ]; (2) roll milling [ 17 ]; (3) planetary type [ 7 , 13 ]; (4) disc milling [ 10 , 18 , 19 ]. Powder production mostly involves fracturing cleaned and dried chips/swarf; meanwhile, cold welding between fragments may occur; however, this joining depends on the energy and conditions of milling.…”

Section: Powder Productionmentioning

confidence: 99%

“…However, microscopic images can be evaluated quantitatively, defining aspect ratio (proportion of the longest diameter to the shortest aspect of one particle). Nonetheless, a recent study applied the plasma spheroidization technique on milled particles in order to accomplish the aspect ratio of one so that spherical shaped particles could be achieved; however, the shape factor was dependent on the powder feeding rate during the spheroidization process [ 16 ].…”

Section: Characterization Of Powder Particles Produced From Metal Chipsmentioning

confidence: 99%

“…Moreover, as the milling time increased, less flattened are the particles [ 22 ]. However, a recent study performed atomization of milled particles to produce spherical shaped powders suitable for AM processing, such as DED and SLM technologies, reaching relative densities of 99% [ 16 ].…”

Section: Recycling Chips For Powder Metallurgy Applicationsmentioning

confidence: 99%

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From Machining Chips to Raw Material for Powder Metallurgy—A Review

et al. 2021

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Chips are obtained by subtractive processes such as machining workpieces and until recently considered as waste. However, in recent years they are shown to have great potential as sustainable raw materials for powder technologies. Powder production from metal chips, through the application of solid-state processes, seems to be an alternative to conventional atomization from liquid cooled with different fluids. However, chip material and processing have an essential role in the characteristics of powder particles, such as particle size, shape, size distribution and structure (4S’s), which are essential parameters that must be considered having in mind the powder process and the metallurgy applications. Moreover, different approaches refereed in the application of this new “powder process” are highlighted. The goal is to show how the actual research has been transforming subtractive processes from a contributor of wastes to clean technologies.

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Section: Powder Productionmentioning

confidence: 99%

Section: Characterization Of Powder Particles Produced From Metal Chipsmentioning

confidence: 99%

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From Machining Chips to Raw Material for Powder Metallurgy—A Review

et al. 2021

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“…For example, Jackson et al [2] produce specimens from ball milled 304L steel machining chips with good material properties of additive specimens. Razumov et al [3] generate metal powder by melting steel machining chips with a plasma torch. They are able to produce spherical particles with acceptable particle size distribution (PSD) for a laser powder-bed fusion process.…”

Section: Introductionmentioning

confidence: 99%

Using ultrasonic atomization to recycle aluminium bronze chips for additive laser directed energy deposition

Müller,

Fasselt,

Kruse

et al. 2023

IOP Conf. Ser.: Mater. Sci. Eng.

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In the post-processing of large maritime components, a considerable amount of waste in the form of milling and grinding chips is produced. At the same time, additive manufacturing technologies have shown great potential in producing high-volume parts for maritime applications, allowing novel design approaches and short lead times. In this context, this study presents a sustainable approach to recycle and use aluminium bronze waste material, generated during post-processing of large cast ship propellers, as feedstock for laser-powder directed energy deposition. The recycling technology used to produce powder batches is inductive re-melting in combination with ultrasonic atomization. The derived metal powders are characterized using digital image analysis, powder flowability tests, scanning electron microscopy as well as energy dispersive X-ray spectroscopy. Compared to conventional metal powders produced by gas atomization, the recycled material shows excellent sphericity and a powder size distribution with a higher content of finer and coarser particles. Metallographic sections of deposited additively produced specimens show an increased hardness and reduced ductility, but also competitive densities and higher yield and ultimate tensile strength compared to cast material. The process chain shows high potential for the maritime sector to enable circular and sustainable manufacturing.

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“…Selective laser melting (SLM) is an additive manufacturing (AM) technology that allows the manufacture of metal products from a powder material [1]. Currently, there are many alloys available for manufacturing with this technology [2][3][4].…”

Section: Introductionmentioning

confidence: 99%