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induction coils

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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
... Abstract This chapter discusses the design and operating principles of various types of electromagnetic coils. It explains how induction coils are classified based on the direction of the eddy currents they induce in the workpiece and the corresponding orientation, whether longitudinal or...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050317
EISBN: 978-1-62708-311-9
... Abstract This appendix provides practical information on induction coils and how they are made. It discusses soldering methods, preferred materials, design challenges, and best practices and procedures. It also discusses the design, construction, and application of magnetic flux concentrators...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050009
EISBN: 978-1-62708-311-9
... Abstract This chapter discusses the basic principles of induction heating and related engineering considerations. It describes the design and operation of induction coils, the magnitude and distribution of magnetic fields, and the forces that generate eddy currents in metals. It explains how...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050293
EISBN: 978-1-62708-311-9
... Abstract This chapter discusses the maintenance needs of major components in induction heat-treating systems, including power supplies, heat stations, capacitors, high-frequency output stages, induction coils, water systems, quench systems, and fixturing. induction heating systems...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050215
EISBN: 978-1-62708-311-9
... tolerances, geometrical effects, quenchant selection, coil design, and work-handling equipment. The chapter also presents several examples, walking readers though each step, and discusses the development of setup instructions and operating procedures. induction hardening process analysis process...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.9781627083119
EISBN: 978-1-62708-311-9
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050191
EISBN: 978-1-62708-311-9
... hardening and tempering are commonly done on a variety of parts through the use of induction. Through hardening occurs either when a portion of a part is through heated and hardened or when the entire part is induction hardened. Hairpin coils are used to through harden the gripping teeth and cutting edges...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130417
EISBN: 978-1-62708-284-6
... an engineer, by simply adapting the shape of the induction coil, to ensure the desired shape of the hardened profile of the surface layer. Likewise, the engineer can surface harden only that part of the surface (local hardening) on which a certain increased level of hardness and wear resistance are...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440159
EISBN: 978-1-62708-262-4
... induction are the same as for the other surface-hardening techniques. This would include the ability to harden lower hardenability ferrous materials and to have less distortion from processing. The pattern of heating obtained by induction is determined by the (a) shape of the induction coil producing...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050025
EISBN: 978-1-62708-311-9
...-frequency outputs. The two main types of circuits in the high-frequency output are parallel and series resonant. When the impedance of the output of the power supply (vector sum of resistance, capacitance, and inductance) matches the impedance of the load (output to work coil and workpiece), full power is...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050001
EISBN: 978-1-62708-311-9
... a shunt did not drop as much. The use and development of induction heat treating practices continued to grow after World War II, and output transformers were developed to help the power supplies and load match when using low-turn work coils. Around 1948, General Electric performed research on...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110587
EISBN: 978-1-62708-247-1
..., namely, common mode choke coil and surface mount powder choke coil. capacitors failure analysis failure modes inductors General construction of Tantalum, Aluminum electrolytic, Multi-layer Ceramics, Film, and Super capacitors and Common Mode Choke and Surface Mount inductors are explained...
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
..., cylinders, and so forth. Figure 7.10 diagrams time versus temperature for induction tempering 18 mm (0.7 in) diameter medium-carbon steel rods traveling at a speed of 100 mm/s (4 in./s.). The induction-tempering line consists of four in-line multiturn coils with a profiled power distribution. The...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050281
EISBN: 978-1-62708-311-9
... Control system for quality Induction coil Ground fault detector if possible Cooling water Pressure switch for low pressure if pressure boosting pump is used Workpiece position correct in coil Fixture Rotation detection Means of lubrication Machine shutdown on fault and part...
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
... quenching. This approach is used in both static heating and single-shot heating, 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...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.ex2.t69980323
EISBN: 978-1-62708-342-3
... presses and auxiliary equipment for tube extrusion, induction furnaces for billet processing, handling systems for copper and aluminum alloy products, extrusion cooling systems, and age-hardening ovens. Next, the chapter describes the principles and applications of equipment for the production of aluminum...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740001
EISBN: 978-1-62708-308-9
... steel shell that is connected to a high-speed vacuum system ( Fig. 6 ). The heart of the furnace is the crucible ( Fig. 7 ) with heating and cooling coils and refractory lining. Heating is done by electric current that passes through a set of induction coils. The coils are made from copper tubing that...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280041
EISBN: 978-1-62708-267-9
... by application of current to the induction coils surrounding the refractory crucible. When the virgin material has been completely melted (all molten), it out-gasses. The outgassing is monitored until it is complete. At that point, the reactive and revert additions may be made, bringing the charge to...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240395
EISBN: 978-1-62708-251-8
... field produced by the induction coil induces electrical eddy currents in the steel within a certain depth of the outer surface, called the skin depth, which decreases as the frequency is increased. The eddy currents produce Joule resistance heating ( I 2 R ) in the skin depth that rapidly raises the...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440207
EISBN: 978-1-62708-262-4
... safely omitted. Gray iron castings can be surface hardened by the induction method when the number of castings to be processed is large enough to warrant the relatively high equipment cost and the need for special induction coils. Considerable variation in the hardness of the cast irons may be...