Plasma Torches for Cutting, Welding and PTA Coating

2017 ◽  
pp. 1-83 ◽  
Author(s):  
Maher I. Boulos ◽  
Pierre Fauchais ◽  
Emil Pfender
Keyword(s):  
Plasma Torches

Study of the operation of high-voltage plasma torches with rod electrodes

2018 ◽  
Vol 56 (6) ◽  
pp. 926-931
Author(s):  
A. Safronov ◽  
◽  
O. Vasilyeva ◽  
Yu. Dudnik ◽  
V. Kuznetsov ◽  
...  
Keyword(s):  
High Voltage ◽  
Plasma Torches

Structure and electrical properties of yttrium oxide sprayed by plasma torches from powders and suspensions

2021 ◽  
Author(s):  
Pavel Ctibor ◽  
Josef Sedlacek ◽  
Radek Musalek ◽  
Tomas Tesar ◽  
Frantisek Lukac
Keyword(s):  
Electrical Properties ◽  
Yttrium Oxide ◽  
Plasma Torches

Plasma Technology TRIPLEX for the Deposition of Ceramic Coatings in the Industry

2000 ◽  
Author(s):  
G. Barbezat ◽  
K. Landes
Keyword(s):  
Plasma Jet ◽  
Life Time ◽  
Deposition Efficiency ◽  
Ceramic Coatings ◽  
Injection System ◽  
Oxide Ceramic ◽  
Long Distance ◽  
Plasma Gun ◽  
Plasma Torches ◽  
Improved Stability

Abstract As a new plasma gun technology the TRIPLEX system has been introduced in the industrial field two years ago. The core of the TRIPLEX technology is a plasma gun with three cathodes and a long cascaded nozzle consisting of several insulated rings. Only the last ring with a relatively long distance to the cathode is operated as anode. Because of the equal and constant lengths of the three independent arcs, stretching from the three cathodes to the common anode, a stationary plasma jet is generated. Compared to conventional torches, the improved stability of the plasma jet allows a more uniform powder treatment and a higher deposition efficiency as well as the powder feed rate can be increased using a triple injection system. A significantly longer life time of the electrodes reduces the cost for quality control in the coating process. The characteristic properties of oxide ceramic coatings are improved in comparison with the coatings produced by conventional plasma torches. The results of two years industrial application of the innovative torch system TRIPLEX are presented in the paper.

Toxic wastes treatment using different configurations of plasma torches

2008 ◽  
Vol T131 ◽  
pp. 014015 ◽  
Author(s):  
C Torres ◽  
J Pacheco ◽  
M Pacheco ◽  
F Ramos ◽  
A Cruz ◽  
...  
Keyword(s):  
Toxic Wastes ◽  
Plasma Torches

scholarly journals Coatings of Carbide-Metal Systems (Cr3C2-NiCr and WC-Co-Cr) Deposited by High-Velocity Atmospheric Plasma Spraying from Specially Modified Fine-Grained Powders

2018 ◽  
Vol 1 (1) ◽  
pp. 18-23
Author(s):  
Vadim Verlotski ◽  
Keyword(s):  
Plasma Spraying ◽  
High Speed ◽  
Plasma Deposition ◽  
Thermal Spraying ◽  
Atmospheric Plasma ◽  
Metal Particles ◽  
Fine Grained ◽  
Plasma Torches ◽  
Carbide Coatings ◽  
Gas Tight

In this article, the author poses and responds to a provocative question that has practically ceased to be asked in the field of thermal spraying of carbide coatings: Is the current worldwide trend of using only unmelted metal particles to form coatings (HVOF, HVAF and cold spray methods) correct, and is the deposition of completely melted powders (plasma spraying methods) really outdated? The results of high-speed plasma deposition of new carbide powders allowed the author to prove that only coatings from molten particles can solve the main problem of such coatings, namely the problem of permeability along the grain boundaries. Through the use of modern Axial III plasma torches combined with optimized fine-grained powders, it has been possible to create Cr3C2-NiCr as well as WC-Co-Cr gas-tight layers.

scholarly journals Transient Phenomena in Plasma Torches and in Plasma Sprayed Coating Generation

1997 ◽  
Vol 07 (C4) ◽  
pp. C4-187-C4-198 ◽  
Author(s):  
P. Fauchais ◽  
J. F. Coudert ◽  
M. Vardelle
Keyword(s):  
Transient Phenomena ◽  
Plasma Torches ◽  
Sprayed Coating ◽  
Plasma Sprayed

Modification of electrode materials for plasma torches

2005 ◽  
Vol 200 (1-4) ◽  
pp. 254-257 ◽  
Author(s):  
I.R. Jankov ◽  
R.N. Szente ◽  
I.D. Goldman ◽  
M.N.P. Carreño ◽  
M.A. Valle ◽  
...  
Keyword(s):  
Electrode Materials ◽  
Plasma Torches
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