Effect of input energy on densification for pure copper fabricated by SLM with blue diode laser

T. Shibata; M. Tsukamoto; Y. Sato; S. Masuno

doi:10.1117/12.2509459

4 March 2019 Effect of input energy on densification for pure copper fabricated by SLM with blue diode laser

T. Shibata, M. Tsukamoto, Y. Sato, S. Masuno

Proceedings Volume 10909, Laser 3D Manufacturing VI; 109090Z (2019) https://doi.org/10.1117/12.2509459
Event: SPIE LASE, 2019, San Francisco, California, United States

Abstract

Selective laser melting (SLM), a recently developed additive manufacturing method, is capable of directly fabricating three dimensional models from a CAD data, which a laser beam is irradiated on the powder to melt and solidify on a powder bed. In SLM, although a fiber laser with the wavelength of near infrared ray (IR) is employed, it is difficult for pure copper to fabricate a complex shape because of its low light absorption rate to copper. Therefore, we have developed an SLM system using a blue diode laser with absorption rate about 6 times that of IR laser and demonstrated for it possible to fabricate pure copper. In this study, we fabricated pure copper by using the developed blue semiconductor laser of 450 nm wavelength and near infrared semiconductor laser of 915 nm wavelength, respectively, and the effect of laser wavelength in SLM was clarified. Furthermore, in order to optimize the densification of the pure copper material of the sample fabricated by the SLM system, the input energy such as the laser scanning speed and the hatching distance were varied. As a result, the correlation between the energy density of the laser and the relative density of the prepared sample was clarified.

Citation Download Citation

T. Shibata, M. Tsukamoto, Y. Sato, and S. Masuno "Effect of input energy on densification for pure copper fabricated by SLM with blue diode laser", Proc. SPIE 10909, Laser 3D Manufacturing VI, 109090Z (4 March 2019); https://doi.org/10.1117/12.2509459

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available