Results 281 to 290 of about 7,216 (318)
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Oxide and spatter powder formation during laser powder bed fusion of Hastelloy X
Powder Technology, 2019Abstract Improvement to the integrity of laser powder bed fusion (PBF-LB) processed Nickel-base superalloys is crucial for their wider adoption in industrial aerospace applications. The nature of PBF-LB, essentially an extended powder micro-welding process, allows opportunity for material contamination and oxidisation.
A.N.D. Gasper +7 more
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Spatter and blowhole formation phenomena in pulsed gas shielded metal arc welding
Materials Science and Technology, 1991Abstract This paper investigates systematically the effect of pulse conditions, type of shielding gas, and wire composition on blowhole and spatter formation and on wire melting rate to obtain guidelines for selection of welding conditions. It was found that spatter formation can be reduced significantly by using a shielding gas of composition Ar + 2·4%
Y. Takeuchi, T. Shinoda
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Journal of Materials Processing Technology, 2001
Laser-drilled holes are known to be inherently associated with the formation of spatter. In this paper, characterisation of the spatter deposited on laser-drilled holes in a Nimonic alloy has been performed and investigated for various laser-processing parameters using a fibre optic delivered Nd:YAG laser.
Low, D. K Y, Lia, L., Corfe, A. G.
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Laser-drilled holes are known to be inherently associated with the formation of spatter. In this paper, characterisation of the spatter deposited on laser-drilled holes in a Nimonic alloy has been performed and investigated for various laser-processing parameters using a fibre optic delivered Nd:YAG laser.
Low, D. K Y, Lia, L., Corfe, A. G.
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Formation mechanisms of pores and spatters during laser deep penetration welding
Journal of Laser Applications, 2017During laser deep penetration welding process, defects cannot be completely avoided yet. Due to the dynamic process, especially process pores and spatters occur. Keyhole dynamics are assumed to be responsible for the initiation of both pores and spatters. However, it is not completely clear yet how spatters and pores are formed.
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Observation of spatter formation mechanisms in high-power fiber laser welding of thick plate
Applied Surface Science, 2013Abstract This paper aims to present the dynamic behaviors of spatter formation, and to clarify the spatter formation mechanisms in the high-power fiber laser welding of a thick plate at low welding speeds. We used a modified “sandwich” specimen to directly observe the geometry of the longitudinal keyhole wall.
M.J. Zhang +4 more
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Journal of Laser Applications, 2019
This paper presents an experimental approach for the reduction of the spatter formation during deep penetration laser welding using the spatial superposition of two laser spots. Experimental testing was performed on high alloyed austenitic steel sheets using both a high power disk laser and a diode laser. The spatter formation was reduced significantly
Falk Nagel +2 more
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This paper presents an experimental approach for the reduction of the spatter formation during deep penetration laser welding using the spatial superposition of two laser spots. Experimental testing was performed on high alloyed austenitic steel sheets using both a high power disk laser and a diode laser. The spatter formation was reduced significantly
Falk Nagel +2 more
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Influence of capillary shape on spatter formation during welding with ring-core fiber systems
2023During laser welding, the formation of spatter results from instabilities of the capillary, which are associated with adverse conditions in the melt flow surrounding the capillary and in the vapor flow at the capillary opening. A change of the characteristics of these flows in the melt pool and in the capillary requires a change of the shape of ...
Zaiss, Felix +11 more
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Integrative oncology: Addressing the global challenges of cancer prevention and treatment
Ca-A Cancer Journal for Clinicians, 2022Jun J Mao,, Msce +2 more
exaly
The International Journal of Advanced Manufacturing Technology, 2022
Qian Chen, Yao Fu, Albert C. To
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Qian Chen, Yao Fu, Albert C. To
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