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u-shaped inductors

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Published: 09 June 2014
Fig. 8 (a) Non-encircling U-shaped inductors. (b) Close-up view of carbide guides that ride on the journal. Source: Ref 2 More
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Published: 09 June 2014
Fig. 9 Rotational-type crankshaft hardening machine with U-shaped inductors. Source: Ref 1 More
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Published: 09 June 2014
Fig. 45 Comparison of a conventional U-shaped inductor (top three images), which uses carbide guides to ride on a journal required to be hardened while a crankshaft rotates during the heating cycle, compared to a SHarP-C inductor (bottom two images) that is more rigid and robust, being CNC More
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005865
EISBN: 978-1-62708-167-2
... belong to the same group of the critical engine/powertrain components. This article focuses on induction technologies used for surface hardening and tempering of automotive crankshafts, and provides general information on U-shaped inductors with crankshaft rotation and clamshell or split inductors...
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Published: 01 November 2010
Fig. 9 Crankshaft hardening inductors made of copper bar or tube. Comparison of U-shaped inductors (top) versus C-inductors (bottom) More
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Published: 09 June 2014
Fig. 28 Comparison of power density distribution when applying a magnetic flux concentrator with a profiled single-turn inductor in selective heat treating. (a) Power density distribution generated by a bare coil (left) compared to coil with a U-shaped flux concentrator (right). (b) Coil More
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
... parameters selection, production rate, etc.). Special inductors comprise the large family of different designs, including pancake, hairpin, split-return, butterfly, U-shaped, passive-active, clamshell, as well as inductors with doors, doorless, channel, C-core, transverse flux, traveling wave inductors...
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Published: 09 June 2014
Fig. 31 Results of computer simulation (using Flux2D finite element software) of induction hardening of selected areas of cup-shaped component using 2 two-turn inductors and “U”-shaped magnetic flux concentrator after 8 s of heating. Source: Ref 35 More
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Published: 09 June 2014
Fig. 30 Selective hardening of end regions of cup-shaped component; (a) FEA mesh and (b) computer-simulated magnetic field distribution at the final stage of heating using 2 two-turn inductors and “U”-shaped magnetic flux concentrators. Only the right half of the component is shown due to its More
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Published: 09 June 2014
Fig. 23 Magnetic field distribution (a) without and (b) with a U-shaped magnetic flux concentrator located around the central leg of a split-return inductor. Source: Ref 19 More
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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
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Published: 09 June 2014
Fig. 54 Magnetic field distribution without (left) and with (right) a U-shaped magnetic flux concentrator located around the central leg of a split-return inductor (results of computer modeling). Source: Ref 36 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
... the efficiency of the hairpin inductors. If the two legs of the hairpin coil are close to each other, the proximity effect will cause much of the current in the two legs to flow on the inside surfaces of the coil legs facing each other. Application of U-shaped flux concentrators around the coil legs...
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
... with U-shaped inductors ( Fig. 23 ). The distance from the output of the transformer to the heating area of the coil must be relatively long to ensure that the counterweights of the crankshaft will not hit the transformer. This is a challenge, because in this style of coil the electrodynamic forces...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005902
EISBN: 978-1-62708-167-2
... ), 2008 , p 96 –98, 100–101, 103– 105 7. Nacke B. , Walther A.-M. , Eggers A. , and Lüdtke U. , Optimierung des Betriebsverhaltens von Rinneninduktoren , Elektrowärme International (Electroheat International) , Vol 49 ( No. B4 ), 1991 , p B176 – B187 8. Nacke B...
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
... mesh, and Fig. 1 ( b – e ) show the sequential dynamics of induction heating of a selected area of a steel rail prior to a sizing operation applying two two-turn butterfly inductors positioned on each side of the rail. Properly positioned, two U-shaped lamination stacks help to increase coil...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005892
EISBN: 978-1-62708-167-2
... ≤ x → k ≤ u k ,   k = 1 ,   n v Equations 1 , 2 , 3 , 4 are subject to the solution of the relevant direct problem; those referred to are boundary-value problems governed by Maxwell's equations of electromagnetic fields. When two or more physical domains coexist...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005893
EISBN: 978-1-62708-167-2
.... The maximum allowable value of inductor voltage U ( t ) (considered as lumped control input) is always restricted by maximum value U max (known a priori) defined by power supply limitations. The minimum value is always equal to zero (the power supply is switched off). Thus, it is reasonable to select...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005897
EISBN: 978-1-62708-167-2
... can be rewritten as: (Eq 1b) P w = H C × p r o d u c t i o n where production is measured in t / h . Figure 1 shows the heat content values for commonly used metals. As an example, the required power ( P w ) is calculated for the previous example using the heat...
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
... through it, leading to an increase in current-carrying area, reduced coil resistance and coil losses, and increased overall electrical efficiency. Fig. 9 Crankshaft hardening inductors made of copper bar or tube. Comparison of U-shaped inductors (top) versus C-inductors (bottom) As discussed...