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gas nitriding

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Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.htgpge.t67320133
EISBN: 978-1-62708-347-8
...Abstract Abstract Nitriding is a case-hardening process used for alloy steel gears and is quite similar to case carburizing. Nitriding of gears can be done in either a gas or liquid medium containing nitrogen. This chapter discusses the processes involved in gas nitriding. It reviews...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250227
EISBN: 978-1-62708-345-4
...Abstract Abstract Nitriding is a surface hardening heat treatment that introduces nitrogen into the surface of steel while it is in the ferritic condition. Gas nitriding using ammonia as the nitrogen-carrying species is the most commonly employed process and is emphasized in this chapter...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240395
EISBN: 978-1-62708-251-8
... carbide coatings, and boronizing. surface hardening steel pack carburizing liquid carburizing gas carburizing vacuum carburizing plasma carburizing gas nitriding liquid nitriding carbonitriding hardfacing flame hardening induction hardening aluminizing siliconizing chromizing...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.htgpge.t67320159
EISBN: 978-1-62708-347-8
... Ion nitriding is a vacuum process that takes place in the plasma of high current glow in a vessel. The workpiece, in this case, a gear, forms the cathode, whereas the vessel wall is the anode. The vessel is evacuated prior to nitriding. Gas containing nitrogen is then introduced, and the treatment...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440141
EISBN: 978-1-62708-262-4
... (a) Nitriding Gas Diffused nitrogen, nitrogen compounds 480–590 (900–1100) 125 μm–0.75 mm (5–30 mils) 50–70 Salt Diffused nitrogen, nitrogen compounds 510–565 (950–1050) 2.5 μm–0.75 mm (0.1–30 mils) 50–70 Ion Diffused nitrogen, nitrogen compounds 340–565 (650–1050) 75 μm–0.75 mm (3–30 mils...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770001
EISBN: 978-1-62708-337-9
... 1500 452–500 (a) 645–745 ML 1300 315 615–800 Induction hardened ME 1275–1330 375–405 515–620 MQ 1160–1220 360–270 515–620 ML 960–1090 225–275 490–655 Gas nitrided, through hardened and tempered ME 1210 435 500–650 MQ 1000 360 500–650 ML 785 255 450...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.htgpge.t67320171
EISBN: 978-1-62708-347-8
... to room temperature that produces the desired properties. Carbonitriding is generally regarded as a modified gas carburizing process, rather than a form of nitriding. This chapter briefly describes the case depth that can be achieved with carbonitriding, how case depth is measured, and the materials...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.htgpge.t67320001
EISBN: 978-1-62708-347-8
..., especially the limitations of these processes to optimal gear design. The distortion in the nitriding process, sometimes considered an alternative to carburizing, is comparatively less but cannot be ignored, particularly when conventional gas nitriding is used. For example, the quality of gas-nitrided gears...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.t68350095
EISBN: 978-1-62708-315-7
...-carbon steels, low-carbon alloy steels Excellent process control, bright parts, faster than gas carburizing, high equipment costs Nitriding Gas Diffused nitrogen, nitrogen compounds 480–590 (900–1100) 125 μm–0.75 mm (5–30 mils) 50–70 Alloy steels, nitriding steels, stainless steels Hardest...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740271
EISBN: 978-1-62708-308-9
.... It then explains how various steels respond to heat treatments, such as annealing, normalizing, spheroidizing, tempering, and direct and interrupted quenching, and surface-hardening processes, such as flame and induction hardening, carburizing, nitriding, and carbonitriding. It also addresses the issue of temper...
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, and gas nitriding have already been discussed in Chapter 21, “Surface Hardening,” in this book. However, in the 1980s a large number of new surface-modification processes were developed. The various techniques in this new generation of processes often use high-energy beams (electron, laser...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.smnm.t52140189
EISBN: 978-1-62708-264-8
...) for nitriding. With gas nitriding, the nitrogen is introduced using ammonia gas, and the high hardness results from formation of nanometer-sized nitride particles that form from the addition of reactive elements such as chromium, molybdenum, or vanadium to the steel. With nitrocarburizing, the nitrogen...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1988
DOI: 10.31399/asm.tb.eihdca.t65220315
EISBN: 978-1-62708-341-6
..., induction appears to hold a considerable cost advantage over other established methods. These other methods include salt-bath nitriding, gas nitriding, and carburizing. Using pricing data from commercial heat treaters, it has been estimated that the over-all costs of the various processes are in the ratio...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.t68350183
EISBN: 978-1-62708-315-7
..., of which: Thus, process availability might negate the selection of plasma carburizing over conventional methods, despite the reduced carburizing times and more uniform case depths associated with plasma methods. A similar situation exists for gas nitriding and plasma (ion) nitriding. The more...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 December 2020
DOI: 10.31399/asm.tb.phtbp.t59310203
EISBN: 978-1-62708-326-3
... vehicle and car transmission components Source: Adapted from Ref 10 and 11 Aluminum-containing low-alloy steels commonly gas nitrided Table 7 Aluminum-containing low-alloy steels commonly gas nitrided Steel Composition, % Temperature (a) Austenitizing Tempering SAE AMS...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410499
EISBN: 978-1-62708-265-5
..., and thermochemical, where surface chemistry is changed during heating, for example nitriding and carburizing. In this chapter carburizing and nitriding produced in conventional gas atmospheres are discussed; plasma and vacuum carburizing and plasma nitriding are described in Chapter 22, “Surface Modification...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500317
EISBN: 978-1-62708-317-1
... 16.42 ): Gas Nitriding: Nitrogen is introduced to the surface of hot metal (at 500 to 570 °C, or 930 to 1060 °F) via nitrogenous gas, usually ammonia. Quenching is not required. Liquid (Salt Bath) Nitriding: Takes place at similar temperature ranges as gas nitriding (510 to 580 °C, or 950...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 December 2020
DOI: 10.31399/asm.tb.phtbp.t59310331
EISBN: 978-1-62708-326-3
.... , Improving Performance of Stamping Dies with Ion/Plasma Nitriding , Ind. Heat. , Nov 2015 , p 40 26. Rolinski E. , Konieczny A. , and Sharp G. , Nature of Surface Changes in Stamping Tools of Gray and Ductile Cast Iron During Gas and Plasma Nitrocarburizing , J. Mater. Eng...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060197
EISBN: 978-1-62708-261-7
... of steel involves a wide variety of methods for annealing, normalizing, hardening, and tempering. Fuel fired or electrically heated furnaces are used in a wide variety of configurations with various media. Furnaces are also used for thermochemical treatments such as carburizing or nitriding (see section...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250039
EISBN: 978-1-62708-345-4
... control. Process methods for nitriding include gas, liquid (salt bath), and plasma (ion) nitriding. Details on these processes can be found in Chapter 10, “Nitriding.” Nitriding steels can be used in many gear applications where a hard, wear-resistant case, good fatigue strength, low notch...