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acetylene

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290079
EISBN: 978-1-62708-306-5
... processes and often with greater economy. Pipe with wall thickness up to 4.8 mm (3/16 in.) can be welded in a single pass. Oxygen and acetylene are the principal gases used in oxyfuel gas welding. Oxygen supports combustion of the fuel gases. Acetylene supplies both the heat intensity and the atmosphere...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2022
DOI: 10.31399/asm.tb.tstap.t56040010
EISBN: 978-1-62708-428-4
... process, a combustible gas serves as the heat source that melts the coating material, which may be in rod, wire, or powder form. Commonly selected gases include acetylene, propane, methyl-acetylene-propadiene (MAPP) gas, and hydrogen, along with oxygen. In general, changing the nozzle and/or air cap...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2023
DOI: 10.31399/asm.tb.ceeg.t59370095
EISBN: 978-1-62708-447-5
... if they have a neck-down core ( Ref 1 ). Standard and larger feeders of steel castings are removed using an oxy-acetylene torch or a circular saw. Deflashing, or removal of the parting plane and core print flash, of medium castings is done by grinding on pedestal grinders. Large iron and steel castings...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.htgpge.t67320175
EISBN: 978-1-62708-347-8
... can be flame hardened. For best results, the carbon content should be at least 0.35%, the usual range being 0.40 to 0.50%. Gases used for flame heating are acetylene and propane. Each of these gases is mixed with air in particular ratios and burnt under pressure to generate the flame...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250249
EISBN: 978-1-62708-345-4
... (Compressive) Stress Levels Distortion Materials Applications Flame Hardening Quenching Applicable Materials Equipment Gases Three basic gases are used for flame hardening: acetylene, MAPP (methylacetylene propadiene), and propane. These gases are each mixed with air in particular...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240395
EISBN: 978-1-62708-251-8
... martensite. The surface is heated by a gas flame created by burning acetylene, propane, or natural gas. The relatively low thermal conductivity of steel enables the surface regions to be austenitized using high rates of energy input without the interior being significantly affected. Flame hardening can...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2022
DOI: 10.31399/asm.tb.isceg.t59320011
EISBN: 978-1-62708-332-4
... A small percentage of iron castings (brake cylinders and pipe fittings) are cast in permanent molds with the mold cavity covered with acetylene soot. The heat-treatment cost makes permanent molded castings less competitive, although the fine graphite shape of permanent molded cast iron is very conducive...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440159
EISBN: 978-1-62708-262-4
...-temperature flame on the surface area to be hardened. The high-temperature flame is obtained by combustion of a mixture of a fuel gas with oxygen or air. Fuel gases commonly used are acetylene, methylacetylene propadiene (MAPP) gas, or propane. Fuel gas selection is based on the flame temperature desired...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1995
DOI: 10.31399/asm.tb.sch6.t68200197
EISBN: 978-1-62708-354-6
... on the size and type of casting, type of metal, and the configuration of the contacts to be cut. A popular method of cutting is oxy-gas torch cutting for burning, utilizing acetylene, natural gas, propane, or proprietary fuel gases. When cutting the higher chromium or stainless steels, iron powder may...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.t68350231
EISBN: 978-1-62708-315-7
... metallic compo- nents that generates oxide films on the metal surfaces. These oxide films prevent the formation of a metallic bond between the sliding sur- faces, resulting in fine wear debris and low wear rates. oxyacetylene welding. An oxyfuel gas welding process in which the fuel gas is acetylene...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.9781627083157
EISBN: 978-1-62708-315-7
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250163
EISBN: 978-1-62708-345-4
... Disadvantages Disadvantages of vacuum carburizing include: Considering all of these potential problems, a deeper case than what is needed is not recommended. It is important to note that research during recent years has succeeded in finding combinations of pressure, gas type (e.g., acetylene...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1995
DOI: 10.31399/asm.tb.sch6.t68200369
EISBN: 978-1-62708-354-6
... manganese steel results in rapid loss of tensile strength and ductility, any welding process that requires related long periods of heating is not advisable, and preheating should be avoided. For this reason, oxy-acetylene welding is not recommended. There are other welding processes to be considered...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050317
EISBN: 978-1-62708-311-9
... of both, silver solder is most commonly used to fasten the copper sections together. While there is some use of soft solder, it is not as good structurally and electrically because components are glued together. A heating source that is good to use for soldering is an oxygen-acetylene torch with proper...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.ssde.t52310201
EISBN: 978-1-62708-286-0
... as well as desired, so as always, weld qualification, including corrosion evaluation, is critical. Oxyfuel Gas Welding (OFW) Oxyfuel gas welding (OFW), “torch” welding, uses oxygen to accelerate fuel (typically acetylene) combustion to produce temperatures that can melt steels. By controlling...
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 March 2002
DOI: 10.31399/asm.tb.mgppis.t60400049
EISBN: 978-1-62708-258-7
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290165
EISBN: 978-1-62708-306-5
... experienced in torch welding and the brazing of other metals generally encounter little difficulty learning torch brazing. Depending on the temperature and heat required, all commercial gas mixtures can be used: oxyacetylene, oxyhydrogen, oxy-natural gas, acetylene and air, hydrogen and air, propane...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410551
EISBN: 978-1-62708-265-5
... carburizing (LPC) rather than vacuum carburizing. Hydrocarbon gases such as acetylene (C 2 H 4 ) are used to supply carbon to steel surfaces, and initially surface carbon content reaches that of the A cm of the steel. Repeated boost/diffuse steps are used to reach lower surface carbon contents...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500317
EISBN: 978-1-62708-317-1
... low initial investment but high operator skills. Temperature and case depth can be controlled by time and fuel type (i.e., acetylene, propane). High energy is required for flame hardening. Therefore, quenching is necessary, and distortion may be a problem. Induction hardening is suitable...