Interaction mechanism of arc, keyhole, and weld pool in keyhole plasma arc welding: a review

S Tashiro - Materials, 2024 - mdpi.com
The Keyhole Plasma Arc Welding (KPAW) process utilizes arc plasma highly constricted by
a water-cooled cupper nozzle to produce great arc pressure for opening a keyhole in the …

An investigation on plasma-MIG hybrid welding process of thick plate aluminum

T Yuji, S Tashiro, H Kinoshita, K Yasui, T Bouno… - Journal of Advanced …, 2024 - Elsevier
Abstract Plasma-Metal Inert Gas (MIG) hybrid welding was employed to carry out bead on
plate welding of an aluminum alloy A5052. The plasma arc was ignited to form a keyhole …

Physical mechanism of material flow in variable polarity plasma arc keyhole welding revealed by in situ x-ray imaging

B Xu, S Chen, S Tashiro, F Jiang, M Tanaka - Physics of Fluids, 2021 - pubs.aip.org
Lightweight manufacturing reduces energy consumption and protects the environment;
therefore, it offers an important direction of development in engineering. Variable polarity …

Analysis of heat transfer and material flow in hybrid KPAW-GMAW process based on the novel three dimensional CFD simulation

D Wu, S Tashiro, Z Wu, K Nomura, X Hua… - International Journal of …, 2020 - Elsevier
In this study, a novel electrode-arc-droplet-weld pool model considering the complex
interactive phenomena of arc, keyhole and weld pool is developed to investigate heat …

Critical conditions for melting of metallic wire in induction heating system through numerical simulation and experiments

AK Prasad, S Kapil, S Bag - Journal of Manufacturing Processes, 2022 - Elsevier
Induction heating is a novel energy source that can be utilized in the melting of metallic
wires for the development of green manufacturing processes such as drop-casting and …

Effect of the eddies formed inside a weld pool on welding defects during plasma keyhole arc welding

A Van Nguyen, S Tashiro, MH Ngo, H Van Bui… - Journal of Manufacturing …, 2020 - Elsevier
In this study, the formation process of welding defects in plasma keyhole arc welding was
investigated based on the formation of eddies inside the weld pool. An experimental …

Influence of shielding gas composition on molten metal flow behavior during plasma keyhole arc welding process

A Van Nguyen, S Tashiro, MH Ngo, AH Le… - Journal of Manufacturing …, 2020 - Elsevier
The purpose of this investigation is to elucidate the behavior of molten metal flow inside
weld pool during welding of Plasma Keyhole Arc Welding (PKAW). An observation of the …

Material flow behavior on weld pool surface in plasma arc welding process considering dominant driving forces

M Ngo Huu, A Nguyen Van, T Nguyen Van… - Applied Sciences, 2020 - mdpi.com
In this study, the effect of oxygen in the shielding gas on the material flow behavior of the
weld pool surface was discussed to clarify the dominant driving weld pool force in keyhole …

Dynamic evolution of keyhole and weld pool throughout the thickness during keyhole plasma arc welding

W Zhou, C Jia, F Zhou, C Wu - Journal of Materials Processing Technology, 2023 - Elsevier
Keyhole plasma arc welding (K-PAW) of medium-thick plates often faces instability in the
initial keyhole penetration stage, so a thorough investigation of the keyhole and weld pool …

Comparison of properties at the interface of deposited IN625 and mixture of IN625 SS304L by laser directed energy deposition and SS304L substrate

N Tudu, M Baruah, SB Prasad - Rapid Prototyping Journal, 2023 - emerald.com
Purpose Prior to manufacturing, designing plays a vital role in the selection of materials and
other design parameters. Therefore, during the deposition of materials, substrate materials …