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plasma torch

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Published: 01 March 2002
Fig. 3.52 Microstructure of the affected layers in the plasma-torch-cut AISI/SAE 1020 steel plate in Fig. 3.51 showing (a) lath martensite at the surface, (b) lath martensite and ferrite just below the surface, and (c) ferrite and pearlite of the base steel. 4% picral etch. 500× More
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Published: 01 June 2016
Fig. 6.4 Crucible-free atomization in plasma-torch-heated water-cooled copper crucible. Courtesy of Impact Innovations GmbH More
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Published: 01 November 2013
Fig. 4 Typical plasma arc cutting (PAC) torch. Source: Ref 1 More
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Published: 01 July 2009
Fig. 22.25 Schematic illustration of a plasma-coating torch showing alternative powder-inlet positions. Source: Tucker, 1982 More
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Published: 01 December 1995
Fig. 25-7 Plasma arc torch ( 1 ) More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.tb.hpcspa.t54460173
EISBN: 978-1-62708-285-3
..., titanium-base alloys, iron-base alloys, zirconium, and others. For the production of ceramic-free powders and for the atomization of reactive and/or high-melting alloys, a plasma-torch-heated water-cooled (cold-wall) copper crucible can also be used ( Fig. 6.4 ) ( Ref 6.4 , 6.5 ). Fig. 6.4...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2022
DOI: 10.31399/asm.tb.tstap.t56040020
EISBN: 978-1-62708-428-4
... formation and coating build-up to predict coating microstructures and properties. Fully predictive model of plasma torch operation as a tool to design stable and more efficient plasma torches, especially for the recent plasma torches operated at lower current and higher voltage than conventional plasma...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2023
DOI: 10.31399/asm.tb.ceeg.t59370115
EISBN: 978-1-62708-447-5
... compared to the conventional method using coke. The plasma torch positioned at the bottom of the cupola converts electrical energy to thermal energy by boosting the temperature through gas ionization. The high temperatures of nearly 1371 °C (2500 °F) reduce the amount of coke needed as well...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290009
EISBN: 978-1-62708-319-5
... metal. The second powder is agglomerated, nanoscale titanium with poor packing and flow. It is fabricated by reacting titanium tetrachloride with hydrogen in a plasma. The small size and high interparticle friction of the latter powder makes flow, packing, mixing, and consolidation difficult. Further...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290023
EISBN: 978-1-62708-306-5
... welding, gas metal arc welding, gas tungsten arc welding, plasma arc welding, plasma-GMAW welding, electroslag welding, and electrogas welding. The basic characteristics of gases used for shielding during arc welding are briefly discussed. electrogas welding electroslag welding flux cored arc...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230361
EISBN: 978-1-62708-298-3
...) along a line of sight from the plasma torch. The plasma consists of free electrons, ionized atoms, some neutral atoms, and (if nitrogen or hydrogen is used) some undissociated diatomic molecules. 22.1.3 Chemical Vapor Deposition Chemical vapor deposition is a chemical process that takes place...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240395
EISBN: 978-1-62708-251-8
... and diffuse into the substrate. Plasma Spraying Plasma spraying uses a plasma torch as the heat source for melting and propelling the particles to the workpiece. The temperature of the plasma arc is so much higher than that produced by flame spraying that coating materials with higher melting points...
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Published: 01 July 2009
Fig. 22.28 Effect of torch standoff distance for a Metco torch on the ultimate tensile strength (UTS) of as-plasma-sprayed (17 to 44 μm) SP100C beryllium powder More
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Published: 01 July 2009
Fig. 22.27 Effect of torch standoff distance for a Metco torch on the microhardness of as-plasma-sprayed beryllium powder. Note that the porosity is lower at the smaller standoff distance. Source: Dunmur 1979 More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440207
EISBN: 978-1-62708-262-4
... bath, or plasma processes) and laser or plasma torch heating. Because of the short heating cycle in these processes, the pearlitic types of ductile iron (ASTM 80-60-03 and 100-70-03) are preferred. Irons without free ferrite in their microstructure respond almost instantly to flame or induction heating...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1995
DOI: 10.31399/asm.tb.sch6.t68200369
EISBN: 978-1-62708-354-6
... to pierce the base material section and increases the life of consumable parts in the plasma arc torch ( Figure 25-7 ). Plasma arc cutting will cut all metals and can be used as a gouging process and for beveling preparation of weld joints. It is a good process for high quality clean cutting of carbon...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2022
DOI: 10.31399/asm.tb.tstap.9781627084284
EISBN: 978-1-62708-428-4
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060085
EISBN: 978-1-62708-261-7
... facilities. Plasma Melting and Heating Plasma torches generate heat from an electrical current that passes through a partially ionized gas (or plasma). The plasma is generated by the phenomenon known as gaseous discharge, whereby a gas is ionized by electrical breakdown. Plasma arc torches can be used...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2022
DOI: 10.31399/asm.tb.tstap.t56040010
EISBN: 978-1-62708-428-4
... and accelerated by the high-temperature, high-velocity plasma gas stream ( Fig. 3 ). Torch design and operating parameters are critical in determining the temperature and velocity achieved by the powder particles. Figure 3 Plasma spray system The powder velocities usually achieved in plasma spray...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480265
EISBN: 978-1-62708-318-8
... protection. Conversely, processes such as oxyacetylene torch and shielded metal arc with coated electrodes are unacceptable because active elements and compounds are present. A proprietary flux, which does not contaminate titanium weldments, is used as a backup to protect the root of inert gas metal arc...