Induction Heating Sintering

Olevsky, Eugene A.; Dudina, Dina V.

doi:10.1007/978-3-319-76032-2_8

Cited by 2 publications

(2 citation statements)

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“…Pure induction heating is a result of induced eddy currents, which are created by an alternating magnetic field, and thus can only be realized when using conductive materials [ 44 ]. Consequently, indirect induction heating is typically used for non-conductive material feedstocks, whereby a conductive susceptor crucible is employed.…”

Section: Introductionmentioning

confidence: 99%

Indirect Induction Sintering of Metal Parts Produced through Material Extrusion Additive Manufacturing

et al. 2023

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Avoiding loose powders and resins, material extrusion additive manufacturing is a powerful technique to produce near-net shape parts, being a cheap and safe alternative for developing complex industrial-grade products. Filaments embedded with a high packing density of metallic or ceramic granules are being increasingly used, resulting in almost fully dense parts, whereby geometries are shaped, debinded and sintered sequentially until the completion of the part. Traditionally, “brown” debinded geometries are transported to conventional furnaces to densify the powder compacts, requiring careful tailoring of the heating profiles and sintering environment. This approach is decoupled and often involves time-consuming post-processing, whereby after the completion of the shaping and debinding steps, the parts need to be transported to a sintering furnace. Here, it is shown that sintering via indirect induction heating of a highly filled commercially available filament embedded with stainless steel 316L powder can be an effective route to densify Fused Filament Fabricated (FFF) parts. The results show that densities of 99.8% can be reached with very short soaking times, representing a significant improvement compared to prior methods. A hybrid machine is proposed, whereby a custom-built machine is integrated with an induction heater to combine FFF with local indirect induction sintering. Sintering in situ, without the need for part transportation, simplifies the processing of metal parts produced through material extrusion additive manufacturing.

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Section: Introductionmentioning

confidence: 99%

Indirect Induction Sintering of Metal Parts Produced through Material Extrusion Additive Manufacturing

et al. 2023

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“…In general, conventional (CV) sintering consumes a high amount of energy and time due to the long duration and high temperatures required. Meanwhile novel processes as Spark Plasma Sintering (SPS) [4,5], induction sintering [6,7], flash sintering [8,9] and microwave (MW) sintering [10] were developed in order to be faster and more efficient. MW sintering has been studied in recent decades and it is considered as an interesting alternative method of sintering for fabrication of ceramic materials [10].…”

Section: Introductionmentioning

confidence: 99%