1-20 of 167 Search Results for

electric induction coil

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1988
DOI: 10.31399/asm.tb.eihdca.t65220009
EISBN: 978-1-62708-341-6
..., the electrical and thermal effects which are induced in the workpiece through its coupling with the coil are deduced. The present chapter deals with this interaction. The chapter that follows deals with the interactions between the induction power supply on the one hand and the coil and workpiece on the other...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050009
EISBN: 978-1-62708-311-9
.... Induction heating occurs when a strong electromagnetic force field is produced from an induction coil close enough to a part to produce an electric current in the part. The part is heated mainly due to the resistance of the flow of this electric current. The actual heating is a complex function related...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1988
DOI: 10.31399/asm.tb.eihdca.t65220027
EISBN: 978-1-62708-341-6
... Abstract This chapter focuses on the transfer of energy between the power supply and the induction heating coil. The most efficient transfer requires that the induction heated load and coil be matched to the power supply and that the electrical circuit containing these elements be properly...
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
... and the currents flowing in the primary, or induction coil. In extreme cases, a “pinch” effect caused the melt to separate and thus break the complete electrical path required for induction, and induction heating, to occur. Problems of this type were most severe in melting of nonferrous metals. Ring melting...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1988
DOI: 10.31399/asm.tb.eihdca.t65220241
EISBN: 978-1-62708-341-6
... Abstract To a large extent, the induction coil and its coupling to the workpiece determine the precise heating pattern that is developed. However, it is often desirable to modify this pattern in order to produce a special heating distribution or to increase energy efficiency. At other times...
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
... arrangements involving either movement of a discrete part into a fixed coil or movement of the induction coil about a stationary part may be used ( Fig. 10.2 ). Stationary coils frequently allow shorter electrical leads from the power supply, accommodate coaxial leads, and are therefore preferred. However...
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.t55050301
EISBN: 978-1-62708-311-9
.... Appendix 1: Metallurgical Definitions for Induction Heat Treating / 305 flux field. Refers to the invisible lines of electromagnetic energy surround- ing an induction coil. frequency. Same as hertz. It is how many times an electric current re- verses its direction in a second. Frequency was the term used...
Image
Published: 01 June 1988
Fig. 2.4 Qualitative variation of the current and the strength of the associated field of magnetic induction with time for a solenoid coil energized by an ac supply. The eddy current induced in an electrically conductive sleeve placed in the induction coil is also shown. More
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.t55050001
EISBN: 978-1-62708-311-9
.... The first induction heaters sold by General Electric during World War II had rectifier tubes for the conversion of the alternating current (ac) to direct current (dc). Output control and tuning were accomplished through a combination of different taps on the output of the tank coil and a control knob...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1988
DOI: 10.31399/asm.tb.eihdca.t65220143
EISBN: 978-1-62708-341-6
... on the resistivity changes (usually increases) of metals with temperature. With the change in resistivity, the electrical load across an induction coil is modified. The most common means of detecting this is through measurements of the impedance of the coil and the workpiece resistance as reflected in the coil...
Image
Published: 01 November 2013
Fig. 12 A cross section of a channel-type induction furnace showing the water-cooled copper induction coil that is located inside of a 360° loop formed by the throat and channel portion of the molten metal vessel. It is the channel portion of the loop that serves as the secondary More
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
... supplies). Most maintenance for induction heat-treating systems is centered on the cooling water systems, the high-frequency electrical output connections from the heat station, the induction coil, any mechanical fixturing, and the quench system, because the power supplies and heat stations have very few...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1988
DOI: 10.31399/asm.tb.eihdca.t65220281
EISBN: 978-1-62708-341-6
.... In these instances, a stainless steel forming die is fabricated with internal channels for water cooling ( Fig. 11.3 ). In operation, the die is heated by an induction coil on an automatic forming machine. When the die is raised to the forming temperature of the plastic, the tubing is mechanically pressed against...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1988
DOI: 10.31399/asm.tb.eihdca.t65220185
EISBN: 978-1-62708-341-6
... are useful in the development of guidelines for coil design. Fig. 8.1 Electrical circuit illustrating the analogy between induction heating and the transformer principle. E p = primary voltage (V); I p = primary current (A); N p = number of primary turns; I s = secondary current (A); N s = number...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1988
DOI: 10.31399/asm.tb.eihdca.t65220085
EISBN: 978-1-62708-341-6
... heating of pipes as a function of wall thickness and outer diameter using power-supply frequencies of (a) 60. From Brochure SA9906, Westinghouse Electric Corp., Baltimore Fig. 6.3(b) Coil efficiency for induction heating of pipes as a function of wall thickness and outer diameter using power...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1988
DOI: 10.31399/asm.tb.eihdca.t65220047
EISBN: 978-1-62708-341-6
... Abstract Besides the induction coil and workpiece, the induction generator (source of ac power) is probably the most important component of an overall induction heating system. Such equipment is typically rated in terms of its frequency and maximum output power (in kilowatts). This chapter...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.htgpge.t67320175
EISBN: 978-1-62708-347-8
... is generated by electromagnetic induction when a high-frequency current is passed through a coil surrounding a gear. The depth to which the heated zone extends depends on the frequency of the current and on the duration of the heating cycle. Because of an electrical phenomenon called skin effect, the depth...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050191
EISBN: 978-1-62708-311-9
... to flow around the entire diameter of the journal because of the electrical effect. The shorted top block reinforces the flow of current around the journal so that a uniform, hardened pattern is produced in the journal after quenching. After the crankshaft is loaded in position, as with split coils...