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magnetic cores

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Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001093
EISBN: 978-1-62708-162-7
..., including motors, generators and transformers. It concludes with a short note on design and fabrication of magnetic cores. alloy classification corrosion resistance ferromagnetic properties magnetic cores magnetic testing methods magnetically soft materials power generation applications alloy...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006057
EISBN: 978-1-62708-175-7
... possible in metal injection molding parts. The article also discusses ferromagnetic cores used in alternating current applications and some permanent magnets, such as rare earth-cobalt magnets and neodymium-iron-boron (neo) magnets. ferritic stainless steel ferromagnetic cores hysteresis loss...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002475
EISBN: 978-1-62708-194-8
... electricity and magnetism branch of physics. The unwanted (parasitic) effects of magnetic field energy associated with a current flow are described elsewhere in this section. The desired effects can be classified into several major groups: those requiring flux enhancers—such as ferromagnetic cores—and those...
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
... cores gained widespread use in the transformer industry because they increased the amount of magnetic flux produced with the same alternating current. The higher the magnetic flux, the higher the emf, which results in an increase in energy transfer efficiency from the primary winding to the secondary...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005595
EISBN: 978-1-62708-174-0
..., followed by welding of flat sheet. Magnetic pulse welding of a tube to a solid core is shown in Fig. 7 . In this case, a tube and a core that are to be welded are placed inside a coil. The outer tube is accelerated by the Lorentz forces induced on it by the coil, and it impacts the inner core ( Ref 39...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003788
EISBN: 978-1-62708-177-1
... materials are typically used for applications where small, applied magnetic fields are used to switch the magnetization direction (i.e., transformer cores, filters, etc.). These materials typically have low coercivity, high permeability, and high magnetization. Magnetically soft materials include high...
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
... saturable-core reactor to control magnetizing-current output, a silicon-controlled rectifier is used in conjunction with phase control to control a saturable-core reactor that is in series with, and that controls the input to, the power transformer. Standard instruments and controls on mobile equipment...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003232
EISBN: 978-1-62708-199-3
... core of soft iron. The legs of the yoke are either fixed or adjustable. Adjustable legs permit changing the contact spacing and the relative angle of contact to accommodate irregular-shape parts. Unlike a permanent-magnet yoke, an electromagnetic yoke can readily be switched on or off, a feature that...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005858
EISBN: 978-1-62708-167-2
...: The magnetic field of the earth generated by currents of molten magma in the core. Depending on the latitude, its value varies from 30 to 55 µT. Radiation emitted by the stars The electric field on the earth's surface created by the positive electrical charges in the upper atmosphere (ionosphere...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005355
EISBN: 978-1-62708-187-0
... core knockout machine and the A-frame core knockout machine and lists the advantages and disadvantages of the knockout machines. The article describes the general factors in automated or manual gate removal process. It concludes with discussion on the various types of inspection, such as liquid...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005119
EISBN: 978-1-62708-186-3
... rotating machines M27 2.80 7.70 M22 3.20 7.65 Excellent permeability at low inductions, lowest core loss; small power transformers, high-efficiency rotating machines M19 3.30 7.65 M15 3.50 7.65 Oriented silicon steels M6 3.15 7.65 Highly directional magnetic properties with...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003329
EISBN: 978-1-62708-176-4
... reviews the semidestructive methods of residual stress measurement: blind hole drilling and ring coring, spot annealing, and X-ray diffraction techniques. Nondestructive methods such as neutron diffraction, ultrasonic velocity, and magnetic Barkhausen noise techniques, are also discussed. Barkhausen...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003153
EISBN: 978-1-62708-199-3
... 1946 to eliminate the wide variety in nomenclature formerly used. When originally adopted, the AISI designation number approximated ten times the maximum core loss in watts per pound, exhibited by 29 gage samples when tested at a flux density of 1.5 T (15 kG) and a magnetic circuit frequency of 60 Hz...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005877
EISBN: 978-1-62708-167-2
... good example is laminated magnetic core consisting of insulated sheets. The electric field intensity ( E ext ) is caused, for instance, by electrochemical, photovoltaic, or other types of forces. The continuity equation for the conduction current is obtained by applying divergence to Eq 6 and...
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
... workpiece surface toward its core is a substantially simplified assumption. It is important to remember that this classical assumption is appropriate only for a solid workpiece having constant electrical tivity and magnetic permeability. Therefore, realistically speaking, this assumption can be made for...
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
... – 534 10.1109/20.486543 37. Krause T.W. , Szpunar J.A. , et al. , Correlation of Magnetic Barkhausen Noise with Core Loss in Oriented 3% Si-Fe Steel Laminates , J. Appl. Phys ., Vol 79 ( No. 5 ), March 1996 , p 3156 – 3167 10.1063/1.361258 38. Krause T.W...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003062
EISBN: 978-1-62708-200-6
... Abstract Ceramic materials serve important insulative, capacitive, conductive, resistive, sensor, electrooptic, and magnetic functions in a wide variety of electrical and electronic circuitry. This article focuses on various applications of advanced ceramics in both electric power and...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005913
EISBN: 978-1-62708-167-2
... iron oxides, manganese ferrites, cobalt ferrites, and many other permutations and combinations of various oxides. The underlying characteristic of all these nanoparticles is that their central core is comprised of materials that are magnetic in nature. In addition these nanoparticles have to be...
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
... field intensity has its maximum value at the surface and then decreases exponentially toward the core. In reality, the magnetic permeability has a complex 3-D distribution within the workpiece, depending on the applied surface magnetic field intensity and temperature. Fig. 12 Distribution of...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006467
EISBN: 978-1-62708-190-0
... of flaws encountered in the inspection of steel bars, including porosity, inclusions, scabs, cracks, seams, and laps. Inspection methods, such as magnetic-particle inspection. liquid penetrant inspection, ultrasonic inspection, and electromagnetic inspection, of steel bars are also described. The...