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acetylene

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Image
Published: 01 January 2006
Fig. 6 Types of cutting tips. (a) Single-piece acetylene cutting tip. (b) Two-piece tip for natural gas or liquefied petroleum gas. Fuel gas and preheat oxygen mix in tip. Recessed bore helps promote laminar flow of gas. More
Image
Published: 01 January 1993
Fig. 1 Gas cylinders and regulators used in oxyfuel gas welding. The acetylene cylinder shown is 1029 mm (40.5 in.) high, 314 mm (12.35 in.) in diameter, and has a wall thickness of 4.4 mm (0.175 in.). The oxygen cylinder is 1295 mm (51 in.) high, 229 mm (9 in.) in diameter, and has a wall More
Book Chapter

Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005175
EISBN: 978-1-62708-186-3
... the properties and compositions of fuel types such as acetylene, natural gas, propane, propylene, and methyl-acetylene-propadiene-stabilized gas. The article describes the effects of OFC on base metal, including carbon and low-alloy steels, cast irons, and stainless steels. It provides information on light...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005642
EISBN: 978-1-62708-174-0
...Abstract Abstract This article contains a table that lists the properties of various fuel gases, namely, acetylene, hydrogen, methane, methyl acetylene propadiene, propane, propylene, and natural gas. It discusses shielding gases, their mixtures and uses in gas metal arc welding, flux cored arc...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001372
EISBN: 978-1-62708-173-3
..., such as oxygen, acetylene, hydrogen, natural gas, propane, and proprietary gases, in OFW. The article discusses the important elements of an OFW system, such as gas storage facilities, pressure regulators, hoses, torches, related safety devices, and accessories. It describes the sequence for setting up...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005758
EISBN: 978-1-62708-171-9
... such as oxygen, compressed air, nitrogen, helium, argon, carbon dioxide, hydrogen, acetylene, kerosene, propylene, propane, and natural gas. The article also provides information on the maintenance and safety practices involved in the plumbing configurations of cylinder gas supply units and bulk gas supply units...
Image
Published: 01 January 2006
(0.1065 in.) Diameter of preheat orifices (six) 1.2 mm (0.0465 in.) Cutting-oxygen pressure 414–483 kPa (60–70 psi) Cutting-oxygen flow rate 17–19 m 3 /h (600–680 ft 3 /h) Preheat-oxygen flow rate (2-hose torch) 2.2 m 3 /h (77 ft 3 /h) Acetylene pressure 41 kPa (6 psi) Acetylene More
Book Chapter

Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001483
EISBN: 978-1-62708-173-3
... capabilities of OFC. In addition to providing information on the equipment used, the article describes the properties of fuel gases (acetylene, natural gas). It also presents an overview of the effect of OFC on base metal and explains the application of OFC in cutting thin, medium, and thick sections, bars...
Image
Published: 01 January 1993
Fig. 7 Flame temperature as a function of relative distance from the torch tip for a neutral (1:1 ratio of acetylene to oxygen) oxyacetylene flame. Source: Ref 4 More
Image
Published: 31 October 2011
Fig. 3 Schematic illustration of a typical oxyfuel gas flame used in welding and cutting, here showing an oxyacetylene flame adjusted to be (a) neutral and (b) reducing. The primary and secondary regions of combustion are shown in (a), while the acetylene “feather” characteristic of a reducing More
Image
Published: 01 January 1993
Fig. 4 Schematic showing cross-sectional view of a spiral equal-pressure mixer. (1) Welding torch head. (2) Oxygen tube from torch head. (3) Acetylene (fuel gas) passages from torch head. (4) Nozzle nut. (5) Welding nozzle cone end. (6) Spiral in welding nozzle. (7) Mixer orifice and mixing More
Image
Published: 01 January 1993
-orifice diameter, mm (in.) 1.51 (0.0595) Acetylene pressure, kPa (psi) 34 (5) Oxygen pressure, kPa (psi) 195 (28) Flame adjustment Neutral More
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005813
EISBN: 978-1-62708-165-8
...-pressure carburizing and high-pressure gas quenching process Oxygen-free hydrocarbons such as acetylene C 2 H 2 (ethyne) are used as a carbon source. The hydrocarbons are injected into the furnace chamber, creating a pressure of a few millibars. On the surface of the treated parts, the hydrocarbons...
Image
Published: 01 January 2006
Fig. 24 Weld groove formed from two J-grooves made by oxyacetylene gouging. Dimensions in inches Pressure of preheat oxygen 207 kPa (30 psi) Pressure of preheat acetylene 76 kPa (11 psi) Pressure of cutting oxygen at nozzle 152 kPa (22 psi) Consumption of cutting oxygen 184 m More
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003208
EISBN: 978-1-62708-199-3
... be welded in a single pass. Gases Oxygen and acetylene are the principal gases used in OFW. Oxygen supports combustion of the fuel gases. Acetylene supplies both the heat intensity and the atmosphere needed to weld steel. Hydrogen, natural gas, propane, and proprietary gases are used only...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001385
EISBN: 978-1-62708-173-3
.... The typical fuel gases used in torch brazing are acetylene, propane, and methane (natural gas). Various flame temperatures and heat contents are given in Table 1 . Common fuel gases used in torch brazing Table 1 Common fuel gases used in torch brazing Fuel gas Formula Oxygen-to-fuel gas ratio...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005807
EISBN: 978-1-62708-165-8
... of odd-shaped parts that would present handling problems if the parts themselves were rotated. Each part is positioned by a simple handling device, and the flame head rotates inside the part. In contrast to the progressive method, in which acetylene usually is used (because of its high flame...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003179
EISBN: 978-1-62708-199-3
... heat release provides the most concentrated heat. These gases are superior for fast starts in flame cutting of high-alloy steels that are difficult to cut. Properties of common fuel gases Table 2 Properties of common fuel gases Acetylene Propane Propylene Methylacetylene- propadiene...
Series: ASM Handbook Archive
Volume: 10
Publisher: ASM International
Published: 01 January 1986
DOI: 10.31399/asm.hb.v10.a0001730
EISBN: 978-1-62708-178-8
... atomized with equal efficiencies. Atomizer characteristics Table 1 Atomizer characteristics Atomizer Temperature, K Sample volumes, mL Atomizer path length, cm Dilution factor (a) Atomizer path length × dilution factor Air-acetylene flame 2500 0.1–2 10 2 × 10 6 2 × 10 5...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005552
EISBN: 978-1-62708-174-0
... monoxide is further oxidized to the final state of carbon dioxide. Each step, as shown subsequently for the example of the combustion of acetylene gas, C 2 H 2 , is accompanied by the release of energy (known as enthalphy in thermodynamics and as the heat of combustion in chemistry) in the form of heat...