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scan hardening

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Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050313
EISBN: 978-1-62708-311-9
... Abstract This appendix illustrates the effect of various operating parameters on the case depth or thickness of scan hardened components. scan hardening through hardening Fig. A2.1 Scan hardening for 3 kHz. Source: Ref 1 Fig. A2.2 Scan hardening for 10 kHz. Source...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050057
EISBN: 978-1-62708-311-9
... in Appendix 2, “Scan Hardening,” in this book. This chapter deals with general theory, types, and applications of coils. References 1. Heat Treating , Vol 4 , Metals Handbook , 9th ed. , American Society for Metals , 1981 2. Ajax Magnathermic , unpublished data 3...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050215
EISBN: 978-1-62708-311-9
... regarding frequency selection. Figures A2.1 and A2.2 in Appendix 2, “Scan Hardening,” in this book gives heating rates for scan hardening. However, some rules of thumb can be readily used to provide a good estimate of the power selections. Note that the actual power requirements depend on the total...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130417
EISBN: 978-1-62708-284-6
.... Induction surface hardening is applicable to axisymmetric or near-axisymmetric machine parts in steel or cast iron that are produced in substantial volumes. There are two basic techniques for induction hardening machine parts: single-shot and scanning. The former employs selective heating and quenching...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1988
DOI: 10.31399/asm.tb.eihdca.t65220253
EISBN: 978-1-62708-341-6
.... From R. Waggott, et al., Metals Technology , Vol 9, December, 1982, p 493 ( Ref 6 ) Single-shot and scanning equipment is used widely in the automotive industry for hardening of various kinds of shafts either along their entire length or selectivity. In a typical vertical induction scanning...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050009
EISBN: 978-1-62708-311-9
..., “Scan Hardening,” in this book. The primary mechanism of heat flow to the interior of a workpiece comes from the conduction of the heat first produced by the eddy currents on the surface. Hysteresis produces a secondary effect and is a small, second producer of heat. Losses due to hysteresis...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1988
DOI: 10.31399/asm.tb.eihdca.t65220143
EISBN: 978-1-62708-341-6
... controllers and heat-regulating devices. Integration of control functions is illustrated with examples related to heating of steel slabs, surface hardening of steel parts, vacuum induction melting for casting operations, and process optimization for electric-demand control. Distributed control within larger...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050191
EISBN: 978-1-62708-311-9
..., as shown by the data in Fig. 10.3 , which compares the fatigue resistance of through-hardened, case-carburized, and surface-induction hardened axles. The induction-hardening methods employed are quite varied and include both singe-shot and scanning techniques. Fig. 10.3 Comparison of fatigue life...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050139
EISBN: 978-1-62708-311-9
..., where the workpiece is heated at one time, and in progressive hardening or scanning. The spray quenches can be located either within the coil itself or in an external quench ring or blocks. When workpieces are induction scanned, they are moved progressively through the induction coil, heating first...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050317
EISBN: 978-1-62708-311-9
..., the electromagnetic forces of the concentrators that tend to loosen the concentrator from the coil. Due to the copper work hardening because of mechanical stresses caused by the coil flexing, if the original coil is susceptible to stress cracking, the use of any of the nonlaminate concentrators enhances early coil...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050263
EISBN: 978-1-62708-311-9
... not be consistent. A change of rotation speed of a workpiece can affect the processing. In one case noticed by the author in the induction hardening of gray iron drill bits, changing the rotation speed during scanning actually changed the loading of the radio frequency induction heater. Also, the higher...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060197
EISBN: 978-1-62708-261-7
... Abstract This chapter discusses the types, methods, and advantages of heat treating procedures, including annealing, normalizing, tempering, and case hardening. It describes the iron-carbon system, the formation of equilibrium and metastable phases, and the effect of alloy elements...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050155
EISBN: 978-1-62708-311-9
... Abstract Induction hardened steels are often tempered to increase their ductility and relieve quenching stresses. During tempering, martensitic microstructures supersaturated with carbon decompose into a more stable, ductile form. This chapter discusses the transformations associated...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130087
EISBN: 978-1-62708-284-6
... that it is present as thin platelets, which are breaking off and allowing material loss. This is one example of a combination of deformation and fracture. Fig. 14 Scanning electron micrograph of a worn piece of hardened medium-carbon plate showing details of the wear mechanism Fretting is a common type...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1988
DOI: 10.31399/asm.tb.eihdca.t65220085
EISBN: 978-1-62708-341-6
... and Application of Radio Frequency Heating , Van Nostrand , New York , 1947 6. Waggott R. , et al ., Metals Technology , Vol 9 , December , 1982 , p 493 10.1179/030716982803285954 7. Spencer T. H. , et al. , Induction Hardening and Tempering , ASM , Metals Park, OH , 1964...
Series: ASM Technical Books
Publisher: ASM International
Published: 31 December 2020
DOI: 10.31399/asm.tb.phtbp.t59310163
EISBN: 978-1-62708-326-3
... Abstract This chapter discusses the processes involved in the heat treatment of steel, namely austenitizing, hardening, quenching, and tempering. It begins with an overview of austenitizing of steels by induction heating, followed by a discussion on the processes involved in transformation...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.lmcs.t66560361
EISBN: 978-1-62708-291-4
...-purity iron. (a) Oxidized at 550 °C. Unetched. 500×. (b) Cathodic ion beam (details given in Ref 3 ). 500×. (c) Scanning electron micrograph. Cathodic ion beam (details given in Ref 3 ). 1400×. (d) Scanning electron micrograph. Fracture surface. 1470×. (e) and (f) 0.1% high-purity alloy...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630081
EISBN: 978-1-62708-270-9
... of service. Hardened tool steels, gray cast iron, and many other metals are routinely used, within their limitations, with satisfactory results. However, if a tool such as a metal-cutting file is bent, it will suddenly snap with a brittle fracture; there will be little or no permanent deformation...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270130
EISBN: 978-1-62708-301-0
.... The bolts were removed and analyzed to determine the mode and cause of failure. Based on the results of macroscopy, scanning electron fractography, metallographic examination, and chemical analysis, the failures were caused by stress corrosion cracking, and in one case, overtightening. microstructural...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.9781627083119
EISBN: 978-1-62708-311-9