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Energy Consumption Model for Additive-Subtractive Manufacturing Processes with Case Study

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Abstract

There has been a growing trend in industry towards the development of integrated manufacturing centers that combine several manufacturing processes, such as the mill-turn center. As additive manufacturing becomes a more widely adopted technology, combining additive with subtractive manufacturing in one machine is a logical evolution to provide the benefits of final parts made from raw materials with the dimensional tolerance and surface finish expected in many applications. An energy consumption model was created that accounted for the energy consumption during primary metal production, deposition, and machining phases of wire-based and powder-based additive-subtractive manufacturing processes. This model was applied to a case study where the energy consumption to produce sub-sized, sheet type, and plate type (size) tensile bars was calculated. It was found that the wire-based process consumed less energy during deposition, whereas powder-based was less energy consumptive during primary metal production and machining. The findings suggest that given the present understanding of the respective technologies’ capabilities, the desired final net shape will dictate the preferred manufacturing process with respect to energy consumption considerations.

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Abbreviations

CNC:

Computer numerical control

cp :

Specific heat

η :

Energy conversion efficiency

GMAW:

Gas metal arc welding

LAMP:

Laser aided manufacturing process

LENS:

Laser engineered net shaping

MIG:

Metal inert gas

MRR:

Material removal rate

Nd:YAG:

Neodymium-doped yttrium aluminum garnet

PMP:

Primary metal production

SEC:

Specific energy consumption

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Correspondence to Frank E. Pfefferkorn.

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Jackson, M.A., Van Asten, A., Morrow, J.D. et al. Energy Consumption Model for Additive-Subtractive Manufacturing Processes with Case Study. Int. J. of Precis. Eng. and Manuf.-Green Tech. 5, 459–466 (2018). https://doi.org/10.1007/s40684-018-0049-y

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  • DOI: https://doi.org/10.1007/s40684-018-0049-y

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