Results 181 to 190 of about 8,844 (222)

Three-dimensional modeling of arc plasma and metal transfer in gas metal arc welding

International Journal of Heat and Mass Transfer, 2009
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Xu, G., Hu, J., Tsai, H. L.
openaire   +2 more sources

Overview of metallurgical studies on weld deposited surface by plasma transferred arc technique

Metallurgical Research & Technology, 2021
Research on plasma transferred arc (PTA) coatings has increased contemplation due to its augmented appropriateness which results from the advanced materials used in applications like mining, petroleum and power plant sectors. This article further broadens the research scope of investigation, by influencing metallurgical and processing aspects in ...
Vivek D. Kalyankar, Hardik V. Naik
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Evaluation on the Corrosion and Wear Resistance of Welding Zone Welded with Plasma Transferred Arc Welding Method

Key Engineering Materials, 2016
There are many welding methods which have been currently performed to prolong the life time of exhaust valve of marine engine from an economic point of view. In this study, one of these welding methods, plasma transferred arc (PTA) welding was performed at the base metal of Nimonic 80A which would be used as the material of exhaust valve with three ...
Jae Hyun Jeong, Kyung Man Moon, Sung Yul Lee, Myeong Hoon Lee   +3 more
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Effect of Welding Parameters on Mechanical Properties of Plasma Transferred Arc Welded SS 202 Plates

Applied Mechanics and Materials, 2016
Plasma arc welding is an arc welding process wherein coalescence is produced by the heat obtained from a constricted arc setup between a tungsten electrode and the workpiece material. In the present work, the 6 mm thick stainless steel 202 plates are welded using plasma transferred arc welding.
Manickam Ravichandran, Navaneethan Sabarirajan, Thanikodi Sathish, Sekar Saravanan   +3 more
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An evolutionary keyhole-mode heat transfer model in continuous plasma arc welding

International Journal of Heat and Mass Transfer, 2018
Abstract Keyhole plasma arc welding is superior to other ordinary arc welding technologies in deep penetration welding. Energy can be transferred to bottom metal by hot plasma arc in keyhole rather than merely by heat conduction through whole thickness.
Yan Li, Yanhui Feng, Xinxin Zhang, Chuansong Wu   +3 more
openaire   +1 more source

Thin Plasma-Transferred-Arc Welded Coatings - an Alternative to Thermally Sprayed Coatings?

International Thermal Spray Conference, 2004
Abstract HVOF-, arc- and plasma sprayed coatings are widely used for wear protection. Today these type of layers are dominant if thin coatings from 50 up to 500 µm and low heat input into the work piece are required. The main disadvantage of thermally sprayed coatings is the adhesion to the substrate and the early failure when cyclic ...
J. Wilden, J.P. Bergmann, H. Frank, S. Pinzl, F. Schreiber   +4 more
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Two-dimensional heat transfer study on the keyhole plasma arc welding process

International Journal of Heat and Mass Transfer, 1988
This paper presents a two-dimensional, quasi-stationary finite element numerical model to study the fluid flow and the heat transfer phenomena which occur during constant travel speed, keyhole plasma arc welding of metal plates. A Newton-Raphson iteration procedure was developed in this model to accurately identify the solid-liquid location during ...
Hsu, Y. F., Rubinsky, B.
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Plasma transferred arc repair welding of the nickel-base superalloy IN-738LC

Journal of Materials Engineering and Performance, 1997
Plasma transferred arc welding (PTA) has been considered a promising process to restore worn areas of land-based gas turbine blades and vanes.
C. Y. Su, C. P. Chou, B. C. Wu, W. C. Lih   +3 more
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Applications for plasma transferred arc welded tools during hot steel tube making

Ironmaking & Steelmaking, 2000
This paper describes applications of a tool reinforcement technology, using plasma transferred arc (PTA) welding, in hot metal rolling. The coating of large NbC particles shows a remarkable performance in the suppression of galling. As the rolling temperature increases, a matrix material with high temperature resistance to deformation is recommended ...
M. Akiyama, K. Tsubouchi, T. Okuyama, N. Sakaguchi   +3 more
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Effects of shielding gas compositions on arc plasma and metal transfer in gas metal arc welding

Journal of Applied Physics, 2010
This article presents the effects of shielding gas compositions on the transient transport phenomena, including the distributions of temperature, flow velocity, current density, and electromagnetic force in the arc and the metal, and arc pressure in gas metal arc welding of mild steel at a constant current input.
Z. H. Rao, S. M. Liao, H. L. Tsai
openaire   +1 more source