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induction surface hardening

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130417
EISBN: 978-1-62708-284-6
... for induction heating and quenching, the use of magnetic flux concentrators to improve the efficiency of surface heating, and the quenching systems used for induction hardening. The discussion also provides information on time-temperature dependence in induction heating, workpiece distortion in induction...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050191
EISBN: 978-1-62708-311-9
... Abstract Induction heat treating is used in a wide range of applications. Typical uses, as described in this chapter, include the surface hardening of many types of shafts as well as gears and sprockets and the through-hardening of gripping teeth, cutting edges, and impact zones incorporated...
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
... Mechanical components often require surface treatments to meet application demands. This chapter describes several surface hardening treatments for steel and their effect on microstructure, composition, and properties. It discusses flame hardening, induction heating, carburizing, nitriding...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.t68350087
EISBN: 978-1-62708-315-7
... Abstract This chapter discusses surface engineering treatments, including flame hardening, induction hardening, high-energy beam hardening, laser melting, and shot peening. It describes the basic implementation of each method, the materials for which they are suited, and their effect on surface...
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...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1988
DOI: 10.31399/asm.tb.eihdca.t65220001
EISBN: 978-1-62708-341-6
... technology were vigorously sought and developed. These included induction surface hardening of steels, introduced by Midvale Steel (1927) and the Ohio Crankshaft Company (mid-1930’s). The former company used a motor-generator for surface heating and hardening of rolling-mill rolls, a practice still followed...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240395
EISBN: 978-1-62708-251-8
..., liquid nitriding, carbonitriding, and hardfacing. The chapter describes two surface hardening processes by localized heat treatment: flame hardening and induction hardening. It also briefly summarizes other surface hardening processes, namely, aluminizing, siliconizing, chromizing, titanium carbide...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050009
EISBN: 978-1-62708-311-9
...,” in this book. Accordingly, the theory of induction heating was researched so that motors and transformers could be built for maximum efficiency by minimizing heating loss. The development of high-frequency induction power supplies provided a means of using induction heating for surface hardening. The early use...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440159
EISBN: 978-1-62708-262-4
..., and heating of nonferrous metals. Additionally, this method of heating can also be used for melting, preheating for forging, and welding and brazing. The use of induction heating, as dealt with in this chapter, is confined principally to localized or selective heating for subsequent hardening (usually surface...
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
.... Fig. 7.7 Temperature vs. time plot at the surface and center of an induction-heated, solid bar. Source: Ref 5 Figure 7.8 shows the tempering temperature effect on bending strength and impact energy (brittleness) for an induction hardened and tempered SAE 15B35. Up to 150 °C (300 °F...
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
... processes are in the ratio of 0.11 to 1.75 to 8 to 2.5 for induction, salt-bath nitriding, gas nitriding, and carburizing methods of case hardening. [3] Thus, in applications in which geometry and production volume allow the use of induction, it is the preferred surface-hardening method from a cost...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050245
EISBN: 978-1-62708-311-9
... Abstract This chapter discusses the methods and procedures used for inspecting induction-hardened parts. It provides information on hardness and case depth measurements, nondestructive testing and surface analysis, the effect of various hardening errors, and relevant test standards. case...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050173
EISBN: 978-1-62708-311-9
... Abstract The surface condition of metals can have a significant effect on the outcome of high-temperature processes and vice versa. This chapter discusses the general cleaning and surface treatment needs of work in-process both before and after induction hardening. It identifies contaminants...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440207
EISBN: 978-1-62708-262-4
... relieving, annealing, normalizing, surface hardening, quenching, martempering, austempering, and flame and induction hardening. annealing austempering carbon equivalent ductile cast iron flame hardening gray cast iron induction hardening malleable cast iron martempering normalizing quenching...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1988
DOI: 10.31399/asm.tb.eihdca.t65220085
EISBN: 978-1-62708-341-6
... to the characteristics of the power supply – namely, its frequency and power rating. Several types of heat treatments can be conducted using induction heating. These include through and surface hardening, normalizing, and tempering of steels, through annealing of steels and nonferrous metals, and annealing...
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 November 2007
DOI: 10.31399/asm.tb.smnm.t52140189
EISBN: 978-1-62708-264-8
... flame hardening or induction hardening. More sophisticated and expensive techniques involve heating the surface by laser beams or by electron beams ( Ref 17.2 ). Figure 17.1 presents a polished and etched cross section of a 2.5 cm (1 in.) diameter bar of 1045 steel that was induction hardened...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050093
EISBN: 978-1-62708-311-9
... carburized can be induction tempered in localized areas, and parts that have been carburized and slow cooled or tempered can be induction hardened in localized areas. Carbon restoration is a process in which gas carburizing is used to restore the decarburized surface of a steel or alloy part. The carbon...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050215
EISBN: 978-1-62708-311-9
... for induction hardening is the microstructure produced by quenching and tempering. AISI 4150 steel has high enough carbon to quench optimally to a surface hardness of 63 HRC. However, if 4150 is fully annealed, it may not quench over 54 HRC when induction hardened. Fig. 11.2 As-quenched hardness vs...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.9781627083119
EISBN: 978-1-62708-311-9