Observation of welding behavior for elucidation of spatter suppression mechanism in laser welding using a 16 kW disk laser

Y. Kurita; T. Arita; M. Mizutani; Y. Sato; H. Nakano; M. Tsukamoto

doi:10.1117/12.2649955

17 March 2023 Observation of welding behavior for elucidation of spatter suppression mechanism in laser welding using a 16 kW disk laser

Y. Kurita, T. Arita, M. Mizutani, Y. Sato, H. Nakano, M. Tsukamoto

Author Affiliations +

Proceedings Volume 12408, Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXVIII; 124080L (2023) https://doi.org/10.1117/12.2649955
Event: SPIE LASE, 2023, San Francisco, California, United States

Conference Poster

Abstract

Laser welding in vacuum with a high-power laser is performed for a stainless steel plate which forms a keyhole inside the molten pool, resulting in a deep penetration without spatters. The spatter is one of the defect factors for laser welding, such as thinning of weld bead, and pore generation. In order to elucidate the mechanism of spatter free process, in situ observations were conducted to investigate dynamics of molten pool and keyhole in vacuum laser welding with a highspeed video camera and X ray transmission system. A stainless steel type 304 (SS304) is widely used in several industries such as automotive industry, chemical plants, petrochemical industry, etc. due to its excellent properties such as high corrosion resistance, hardness, low-temperature toughness, and thermal stability. The stainless steel type 304 (SS304) was set in a vacuum chamber and then a disk laser with an output power of 6 kW was irradiated and scanned on it to form a weld bead under aimed pressure. At the same time, the behavior of molten pool and keyhole were captured with real time observation system and an X ray transmission system, respectively. From the results, it was found that this fluctuation of molten pool affected the generation of spatter.

Citation Download Citation

Y. Kurita, T. Arita, M. Mizutani, Y. Sato, H. Nakano, and M. Tsukamoto "Observation of welding behavior for elucidation of spatter suppression mechanism in laser welding using a 16 kW disk laser", Proc. SPIE 12408, Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXVIII, 124080L (17 March 2023); https://doi.org/10.1117/12.2649955

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