Dimensional and Form Characterization of a Benchmarking Specimen Subjected to Different Post‐Processing Technologies for Metal Additive Manufacturing

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedings – Annual report year: 2019Researchpeer-review

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The major interest for the use of Metal Additive Manufacturing (MAM) in precision tooling have led to a large demand of increased dimensional and form accuracy. In order to characterize both the manufacturing process itself as well as the subsequent postprocessing that is inevitable in many cases, a benchmarking specimen has been designed and manufactured. The benchmarking specimen consists of several geometries including external and internal features. The external features include protruding as well as intruding geometries while the internal features range in two different categories relating to channels with square and circular crosssections respectively. Several identical units of the benchmarking specimen have been manufactured using MAM with stainless steel 316L. After the characterization of selected geometrical parameters including measurands like dimensions and form, the specimens have been subjected to different post‐processing technologies such as Functional Coatings (Sol‐Gel), Electrochemical Polishing, Dry Electro Polishing and Plasma Electrolytic Polishing. Following post‐processing of the specimens the geometrical characterization has been repeated and compared to the initial characterization. The results show that geometrical dimensions are largely dependent on the subjected post‐processing technology while form parameters deviate less with different post‐processing technologies. By implementing post‐processing correction factors, it would be possible to manufacture parts with an increased final accuracy thereby increasing the final quality of specimens manufactured using MAM technology.
Original languageEnglish
Title of host publicationProceedings of the Joint Special Interest Group meeting between euspen and ASPE Advancing Precision in Additive Manufacturing (2019)
Number of pages2
PublisherThe European Society for Precision Engineering and Nanotechnology
Publication date2019
Publication statusPublished - 2019
EventJoint Special Interest Group meeting between euspen and ASPE Advancing Precision in Additive Manufacturing - Ecole Centrale de Nantes, Nantes, France
Duration: 16 Sep 201918 Sep 2019

Conference

ConferenceJoint Special Interest Group meeting between euspen and ASPE Advancing Precision in Additive Manufacturing
LocationEcole Centrale de Nantes
CountryFrance
CityNantes
Period16/09/201918/09/2019

    Research areas

  • Post‐Processing, Metal Additive Manufacturing, Quality Assurance

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