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electric induction coil

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Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005924
EISBN: 978-1-62708-166-5
... 800 V output from an induction power supply. If the induction coil shown has a 30 V requirement and the power supply has an 800 V output, then a transformer can be used to match the coil to the power supply. The electrical components used for load matching, such as transformers and capacitors, are...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005196
EISBN: 978-1-62708-187-0
... the electrical circuit, with the surrounding copper coil being the primary. In a coreless furnace, the entire metal content of the crucible is the secondary. Fig. 1 Components of a coreless-type induction furnace. (a) Operational elements. (b) Cross section showing water-cooled copper induction...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005200
EISBN: 978-1-62708-187-0
.... A VIM furnace is simply a melting crucible inside a steel shell that is connected to a high-speed vacuum system ( Fig. 1 ). The heart of the furnace is the crucible ( Fig. 2 ) with heating and cooling coils and refractory lining. Heating is done by electric current that passes through a set of...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006450
EISBN: 978-1-62708-190-0
..., bridge unbalance system, induction bridge system, and through transmission system. The article concludes with a discussion on the inspection of aircraft structural and engine components. aircraft structures bridge unbalance system coil impedance eddy-current inspection electrical conductivity...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003234
EISBN: 978-1-62708-199-3
... and the electrical resistance of the wire is the only limitation to the flow of current. However, when alternating current flows in a coil, two limitations are imposed: the alternating-current resistance of the wire and a quantity known as inductive reactance ( X L ). Impedance usually is plotted...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003200
EISBN: 978-1-62708-199-3
... ELECTROMAGNETIC INDUCTION is one method of generating heat within a part for hardening or tempering a steel or cast iron part. Any electrical conductor can be heated by electromagnetic induction. As alternating current from the converter flows through the inductor, or work coil, a highly concentrated, rapidly...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005199
EISBN: 978-1-62708-187-0
.... Fig. 2 Schematic cross section of a typical electric arc furnace showing the application of different refractories The high-frequency induction furnace is essentially an air transformer in which the primary is a coil of water-cooled copper tubing and the secondary is the metal charge. The...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006641
EISBN: 978-1-62708-213-6
... inductively by radio-frequency (RF) energy in a stream of inert gas. It consists of an assembly of three concentric quartz tubes (plasma torch) surrounded by a copper induction coil connected to a free-running or crystal-controlled RF generator, typically operated at 27 or 40 MHz with an output power of 1 to...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006647
EISBN: 978-1-62708-213-6
... ). These electrical and magnetic fields are responsible for the electron flow (often termed the eddy current) and the plasma, as represented in Fig. 2 and 3 . Fig. 2 Schematic diagram illustrating the plasma-generation process. Radio-frequency power is applied to the induction coils surrounding...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003173
EISBN: 978-1-62708-199-3
... 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 of the electrical circuit in...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003091
EISBN: 978-1-62708-199-3
..., and rotor steels have higher quality requirements and tighter composition control than plain carbon or ordinary low-alloy steels. The production of special-quality steels requires vacuum-based induction or electric remelting and refining capabilities. The article explores the types and characteristics...
Book Chapter

By G. Keough
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005203
EISBN: 978-1-62708-187-0
.... The key design elements of a reliable ISM crucible include effective water cooling and a segmented crucible that allows the field from the induction coil to couple to the load. Modern ISM crucibles use narrow gap technology to minimize the risk of liquid metal penetrating in between the segments and...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006651
EISBN: 978-1-62708-213-6
... inside the concentric channels of the torch, while the RF load coil creates an oscillating electric and magnetic field. A spark from the ignitor ionizes argon atoms by removing an electron from the outer orbital of an argon atom, creating positively charged argon ions and electrons, which begin to...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005303
EISBN: 978-1-62708-187-0
... into position within the coils by hydraulic cylinders. Fig. 6 Foundry installation of high-frequency induction lift swing furnaces A coreless induction furnace comprises a water-cooled copper coil in a furnace box made of steel or Transite. The metal is contained in a crucible or in a...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003021
EISBN: 978-1-62708-200-6
... desired. The welding equipment comprises a high-frequency induction generator, a water-cooled copper working coil, and press fixtures, which hold the polymer component so that it can be heated and loaded. Heating results from eddy currents that are induced in the thermoplastic tape containing the...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003210
EISBN: 978-1-62708-199-3
... automatic process. INDUCTION BRAZING is a process in which the surfaces of components to be joined are selectively heated to brazing temperature by electrical energy transmitted to the workpiece by induction, rather than by a direct electrical connection, using an inductor or work coil...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006678
EISBN: 978-1-62708-213-6
... sample housed inside a specimen chamber, typically below the electron-optics column. Electromagnetic lenses below the electron gun focus the electron beam to a small probe at the sample surface. Scanning coils deflect the electron probe across the sample surface, and detectors housed either in the...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005299
EISBN: 978-1-62708-187-0
... coil is rammed with grain refractory. The furnace chamber may be a refractory crucible or a rammed and sintered lining. General practice is to use ganister rammed around a steel shell that melts down with the first heat, leaving a sintered lining. Basic linings are often preferred; a rammed lining of...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001228
EISBN: 978-1-62708-170-2
... machines equipped with proper supporting and conveying devices are used for continuous blast cleaning of steel strip, coil, and wire. These machines are also used to clean castings and forgings at a high production rate, making use of flat face or skew rolls, monorails, and other continuous work-handling...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003157
EISBN: 978-1-62708-199-3
... contacts, particularly the low-force precious metal contacts universally employed in high-reliability, low-noise circuits. The damaging organic vapors can arise from coil forms, wire coatings, insulation, soldering flux, potting and sealing compounds, and other organics in associated electrical equipment...