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gas carburizing

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.lmcs.t66560361
EISBN: 978-1-62708-291-4
.... , The Influence of Microstructure on the Properties of Case-Carburized Components , American Society for Metals , Metals Park, OH , 1980 . 17. Gas Carburizing , Metals Handbook , 9th ed. , Vol. 4 , Heat Treating , American Society for Metals , Metals Park, OH , 1981 . 18. Goldstein J.I...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770011
EISBN: 978-1-62708-337-9
... Abstract Gas carburizing is known to promote internal oxidation in steel which can adversely affect certain properties. This chapter discusses the root of the problem and its effect on component lifetime and performance. It explains that gas-carburizing atmospheres contain water vapor...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240395
EISBN: 978-1-62708-251-8
... Abstract This chapter discusses the process characteristics, advantages, disadvantages, and applications of various processes involved in surface hardening of steel. These include pack carburizing, liquid carburizing, gas carburizing, vacuum carburizing, plasma carburizing, gas nitriding...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130177
EISBN: 978-1-62708-284-6
... by maximizing surface compressive stresses, and carburizing is one of the most effective and commonly used methods to impart compressive stresses to the surface of a component (Ref 3) . The focus of this chapter is on carburized and carbonitrided materials. Gas carburizing, which is the most widely used...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.htcma.t52080097
EISBN: 978-1-62708-304-1
... ), 1979 , p 105 10.1007/BF00611975 23. Chu W.F. and Rahmel A. , Oxid. Met. , Vol 15 , 1981 , p 331 10.1007/BF01058833 24. Nishiyama Y. , Otsuka N. , and Nishizawa T. , Carburization Resistance of Austenitic Alloys in CH 4 -CO 2 -H 2 Gas Mixtures...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440141
EISBN: 978-1-62708-262-4
... Process temperature, °C (°F) Typical case depth Case hardness, HRC Carburizing Pack Diffused carbon 815–1090 (1500–2000) 125 μm–1.5 mm (5–60 mils) 50–63 (a) Gas Diffused carbon 815–980 (1500–1800) 75 μm–1.5 mm (3–60 mils) 50–63 (a) Liquid Diffused carbon and possibly nitrogen...
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 November 2007
DOI: 10.31399/asm.tb.smnm.t52140189
EISBN: 978-1-62708-264-8
... potential line. For example, according to Fig. 7.7 , at 1000 °C (1830 °F), an endo gas having %CO 2 = 0.067 will have a carbon potential of 0.95% C. Therefore, a 1095 steel placed into this gas under these conditions will neither carburize nor decarburize. In the discussion of Fig. 7.7 , this gas...
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
.... , The Physical and Chemical Processes of Vacuum and Glow Discharge Carburizing , Plasma Heat Treatment, Science and Technology , PYC Edition , 1987 , p 58 – 71 22.22 Pacheco J. , “ Fatigue Resistance of Plasma and Gas Carburized SAE 8719 Steel ,” M.S. thesis T-3750, Colorado School of Mines...
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
... 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 embrittlement...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770001
EISBN: 978-1-62708-337-9
...) Sulphinuz treated 0.17(0.007) Gas nitrided (80 h) (3%Cr-Mo) 0.35(0.015) Maraging (x) 0.14(0.005) Gas carburized, hardened, and tempered (Ni-Cr) 1–1.5(0.04–0.06) Gas carburized and hardened (Ni-Cr) 1.5 (0.06) Fig. 5 Plots of shear-fatigue strength (from hardness) against plots...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.t68350095
EISBN: 978-1-62708-315-7
... (1500–2000) 75 μm–1.5 mm (3–60 mils) 50–63 (a) Low-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...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770037
EISBN: 978-1-62708-337-9
... specification for decarburization. In well-run carburizing and hardening facilities, the decarburization of case-hardened surfaces does not seem to be a problem. This success reflects the use of good, well-maintained equipment and good process operating procedures. Nevertheless, with case hardening, the gas...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130395
EISBN: 978-1-62708-284-6
...) . Powder metallurgy parts with relatively low combined carbon contents of up to 0.20 wt% can be carburized by conventional pack or gas methods. Liquid carburizing is not recommended because of the difficulty of washing the parts free of salt. Gas carburizing is more practical for PM parts than pack...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770171
EISBN: 978-1-62708-337-9
... Abstract This chapter familiarizes readers with tempering and refrigeration treatments and their effect on case-carburized parts. It explains how tempering makes such parts easier to machine, more structurally and dimensionally stable, and more durable in certain applications. It identifies key...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060197
EISBN: 978-1-62708-261-7
... Resistance , Prentice-Hall , 1988 9.14 Parrish G. , Carburizing: Microstructures and Properties , ASM International , 1999 9.15 Heat Treating Progress , Sept 2006 Steels are irons with a small amount of carbon alloying. Iron, by itself, has limited structural usefulness...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770099
EISBN: 978-1-62708-337-9
.... and Kosec L. , The Fatigue Strength and the Influence of Nonmetallic Inclusions on the Fatigue Fracture of Case-Hardening Steels (BISI 5906) , Härt.-Tech. Mitt. , Vol 22 , July 1967 , p 166 – 173 77. Gunnarson S. , Structure Anomalies in the Surface Zone of Gas-Carburized, Case...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240063
EISBN: 978-1-62708-251-8
... 2.6 0.9998 0.50 0.5205 1.2 0.9103 2.8 0.9999 For example, consider the gas carburization of type 1020 steel at 930 °C (1700 °F). Assume that the steel has a nominal carbon content of 0.20%, and the carbon content at the surface is 0.90%. The diffusion coefficient under...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770051
EISBN: 978-1-62708-337-9
... endothermic carrier gas is decidedly carburizing; however, at 925 °C its carbon potential is only about 0.4% ( Fig. 3.23 ) ( Ref 34 ). If the atmosphere were to be enriched to have a carbon potential of 1% at 925 °C, then in the Ac 1 to Ac 3 temperature range its carbon potential would be exceedingly high...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770135
EISBN: 978-1-62708-337-9
... if the cooling involves a quench); this results in thermal stresses, transformation stresses, yielding, and, hence, distortion. Parts that are pack carburized (both heated and cooled in compound) distort very little because the thermal gradients involved are quite shallow. The same parts, if gas carburized...