Process development for laser powder bed fusion of pure copper

Thomas Stoll, Pascal Trautnitz, Samuel Schmiedeke, Joerg Franke, Nahum Travitzky

Результат исследований: Материалы для книги/типы отчетовМатериалы для конференции

Аннотация

This paper describes the development of suitable process parameters to ensure a reproducible, defect-free production of pure copper specimen via Laser Powder Bed Fusion (LPBF) also called Selective Laser Melting (SLM). Therefore, a set of experiments was developed and evaluated in a Design of Experiment (DoE) which finally provide an indication about ideal process parameters for melting pure copper powder at a wavelength of 1064 nm. For the experiments Cu-ETP with a copper purity of more than 99.90 % was processed with a laser power of up to 500 W resulting in a maximum density of 99.82 % and an electrical conductivity of 56.88 MS/m. Besides the development of optimal parameter combinations of laser power, laser speed and hatching distance, focusing the laser beam to a spot diameter of about 35 μm with a fused silica f-theta lens and thus high energy intensities of about 416 kW/mm2 resulted in best materials properties.

Язык оригиналаАнглийский
Название основной публикацииLaser 3D Manufacturing VII
РедакторыBo Gu, Hongqiang Chen, Henry Helvajian
ИздательSPIE
ISBN (электронное издание)9781510633056
DOI
СостояниеОпубликовано - 2020
СобытиеLaser 3D Manufacturing VII 2020 - San Francisco, Соединенные Штаты Америки
Продолжительность: 4 фев 20206 фев 2020

Серия публикаций

НазваниеProceedings of SPIE - The International Society for Optical Engineering
Том11271
ISSN (печатное издание)0277-786X
ISSN (электронное издание)1996-756X

Конференция

КонференцияLaser 3D Manufacturing VII 2020
СтранаСоединенные Штаты Америки
ГородSan Francisco
Период4.2.206.2.20

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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