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magnetic flux concentrators

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Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005842
EISBN: 978-1-62708-167-2
..., and the effect of magnetic flux concentrators on coil life. It also reviews the importance of having appropriate and reliable electrical contacts. camshafts clamshell inductors copper crack propagation crankshafts current density electrical contacts failure mode frequency induction coils...
Image
Published: 01 November 2010
Fig. 17 Magnetic field distribution without (left) and with (right) a U-shaped magnetic flux concentrator located around the central leg of a split-return inductor. Source: Ref 42 More
Image
Published: 01 November 2010
Fig. 51 Computer simulation of the sequential dynamics of induction scan hardening a hollow shaft using a two-turn machined integral quench (MIQ) inductor with an L-shaped magnetic flux concentrator ring (frequency = 9 kHz). See Fig. 52 and 53 . Source: Ref 109 More
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005841
EISBN: 978-1-62708-167-2
... tube fittings. Either rubber hoses (no metal braid reinforcement) or plastic tubing (e.g., polypropylene tubing) are used to connect the inductor back to the water-cooling circuit used to keep the inductor and induction power supply cool. Field Shield Materials and Magnetic Flux Concentrator...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005846
EISBN: 978-1-62708-167-2
... for a single-turn induction coil with a magnetic flux concentrator heating a cylindrical workpiece from the outside. The magnetic flux in the system is equal to the ampere turns of the coil divided by the reluctance of the magnetic circuit. The reluctance of the magnetic circuit consists of three basic...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005839
EISBN: 978-1-62708-167-2
... and flow checking, silver plating, and electrical parameter measurement. electrical contacts frequency induction coil cooling induction coils induction heat treating magnetic flux concentrators quenching silver plating sintered ferrite spindles FOR INDUCTION MELTING AND MASS HEATING...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005863
EISBN: 978-1-62708-167-2
... using a two-turn machined integral quench (MIQ) inductor with an L-shaped magnetic flux concentrator ring (frequency: 9 kHz). Images (e) through (i) illustrate the comet-tail effect manifested as a heat accumulation in shaft subsurface regions below the scan inductor. Source: Ref 15 After...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005891
EISBN: 978-1-62708-167-2
... the following conditions: The solenoid turns are tightly wound using thin wire. The coil current is uniformly distributed within each turn and skin effect is absent. There is no leakage of magnetic flux. There are neither electrically conductive bodies nor flux concentrators located within close...
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
..., indicating a potential process problem. While the monitors are a useful addition to quality-control systems, they may not indicate all conditions that might produce a bad workpiece. Induction coils with magnetic flux concentrators will eventually produce workpieces out of tolerance due to deteriorating...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005533
EISBN: 978-1-62708-197-9
... treated materials depend strongly on temperature, magnetic field intensity, as well as chemical composition and microstructure. The metallurgical aspects of metal heat treating have been discussed in Ref 1 , Ref 2 , Ref 3 , Ref 4 , Ref 5 , Ref 6 . This article concentrates on simulation techniques...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005835
EISBN: 978-1-62708-167-2
... of temperature and crystalline structure. Magnetic properties (e.g., magnetic permeability, saturation flux density, coercive force) are complex functions of temperature, crystalline structure, frequency of electromagnetic field, and field intensity. Crystalline structure, the solid phases of the heated...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005761
EISBN: 978-1-62708-165-8
... rates are typically controlled by the coil voltage/current, because the field strength is roughly proportional to coil voltage/current. A key factor also is the degree of coupling between the workpiece and the magnetic field of the coil. Coupling is determined by the number of imaginary magnetic flux...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003232
EISBN: 978-1-62708-199-3
... current can be selectively concentrated in the rim area by proper polepiece selection to provide full coverage (rim area) in a single processing step. The pole pieces depicted in Fig. 11 (b) are hollow and cylindrical, with one on each side of the disk. The pole pieces direct the magnetic flux through...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006468
EISBN: 978-1-62708-190-0
... ring, magnetized bar, circular magnetization, longitudinal magnetization, and effects of flux direction. General applications, advantages, and limitations of the various magnetizing methods used in magnetic-particle inspection are listed in a table. The article discusses the items that must...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001109
EISBN: 978-1-62708-162-7
..., penetration loss, eddy current loss, and radio frequency loss. Furthermore, the article describes the flux pinning phenomenon and Josephson effects. flux pinning Josephson effect magnetic properties power loss stabilization superconductivity superconductors SINCE ITS DISCOVERY in the early...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005896
EISBN: 978-1-62708-167-2
...: Induction heating professionals generally come ss ferrimagnetic materials only when dealing with magnetic flux concentrators and not the heated workpieces. In strong magnetic fields, the magnetization of ferromagnetic materials approaches a definite limit called magnetic saturation . The saturation...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003153
EISBN: 978-1-62708-199-3
..., transformers, magnetic shielding, and so on. Important characteristics of magnetically soft materials include: (a) high permeability, (b) high saturation induction, (c) low hysteresis-energy loss, (d) low eddy-current loss in alternating flux applications, and (e) constant permeability at low field...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005857
EISBN: 978-1-62708-167-2
... particle technique is suitable only for ferromagnetic metals and requires the application of a strong magnetic field, but it provides a more sensitive and even more certain means of detection. Ultrasonic and eddy-current testing, quantitative magnetic flux leakage techniques, and the alternating...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005516
EISBN: 978-1-62708-197-9
... ( P loss sur ) and can be determined as: (Eq 12) P loss el = P loss turns + P loss sur The value of P loss sur represents an undesirable heating of tools, liners, flux concentrators, magnetic shunts, fixtures, enclosures, support beams...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006442
EISBN: 978-1-62708-190-0
... and dislocations ( Ref 7 ), and the presence of residual stress ( Ref 8 ) and plastic deformation ( Ref 9 ). In addition, the evolution of the domain structure is affected by the previous magnetization state, the presence of direct current bias fields that may arise due to remnant flux ( Ref 10 ), the rate...