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induction coils

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c9001598
EISBN: 978-1-62708-232-7
... from cumulative service at elevated temperature. A recommendation was made to implement a support for the conical section of the CIM and to increase the wall thickness of the drain tube. Thus, the possibility of drain tube misalignment in the induction coils and localized over heating will be minimized...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001836
EISBN: 978-1-62708-241-9
... at JCOE Induction coil used in hot induction bending (HIB) Fig. 5 Prominent possibilities of copper entrapment Copper Molds Used during Continuous Casting Stage The copper entrapment in the steel during the continuous casting ( Fig. 6 ) stage from the water-cooled copper mold...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001502
EISBN: 978-1-62708-234-1
.... The cause was activated by a nonfunctioning induction hardening coil that did not or was not allowed to harden the midprofile of several teeth. Hardness Induction hardening Mining Motor trucks Spur gears 4147H UNS H41470 Heat treating-related failures Spalling wear A portion of two large...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0091690
EISBN: 978-1-62708-234-1
... copper alloy C23000 (red brass, 85Cu-15Zn), began subjecting the crimped ferrules to a stress-relief anneal using an induction coil, and made long-range plans to change to plated steel ferrules. ...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c0047392
EISBN: 978-1-62708-221-1
... tempered during a hot-straightening operation. Rather than attempt to identify and segregate tempered and untempered roadarms, all production arms were tempered, including those already installed. A split induction coil was used to encompass the region of the weld and the adjacent hardened HAZ, thus...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001838
EISBN: 978-1-62708-241-9
... or an induction coil, at temperatures well below the melting point of the alloy. In austenitic stainless steels, the melting of these grain boundary films can start at temperatures as low as 900 °C [ 4 ]. Chemical Composition Mechanical Properties Testing for Sensitivity to Intergranular Corrosion...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001302
EISBN: 978-1-62708-215-0
... if the temperature of the blank is below about 1149 °C (2100 °F). Such blanks are also set aside, but can be re-inserted into the heating line after cooling. This forging was made in two steps. After the blank left the induction coil, it dropped through a chute and an operator placed it in a hammer forge...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c9001578
EISBN: 978-1-62708-233-4
... of the current being supplied to the induction coils. In all three cases the frequency was 7250 cycles/s. Since the plate vibration frequency corresponded to the operating frequency of the induction furnace, the furnace frequency was increased to 9000 Hz to see whether a change in frequency would eliminate...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003533
EISBN: 978-1-62708-180-1
... quickly result, producing a conductive layer across the entire surface of the sample. The heating is usually achieved in a wire filament by passing an electric current through it or, in a small metal sample, by using a levitation induction coil. Carbon evaporation is also possible using a slightly...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006769
EISBN: 978-1-62708-295-2
... monolayers of atoms can quickly result, producing a conductive layer across the entire surface of the sample. The heating is usually achieved in a wire filament by passing an electric current through it or, in a small metal sample, by using a levitation induction coil. Carbon evaporation is also possible...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006764
EISBN: 978-1-62708-295-2
... of the sample ( Fig. 8 ). The conducting coil carries a high-frequency alternating current that establishes an electromagnetic field around the coil. This primary field causes eddy currents to flow in the part as a result of electromagnetic induction. The eddy currents are affected by all characteristics...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001595
EISBN: 978-1-62708-235-8
... ASTM A 232. It was opined that the failure had occurred via hydrogen embrittlement during a nickel plating process after quenching, tempering, and coiling. The spring had a lower than average calculated D I of 96.5 mm (3.8 in.) with a grain size of 7, but it had an elevated surface hardness because...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006761
EISBN: 978-1-62708-295-2
.... An electronic induction coil measures the velocity of the impact device before and after it contacts the sample. The portable nature of these testers allows for fast, reliable hardness testing in the field. One of the limitations of the technique is that a minimum mass and thickness is required for accurate...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006816
EISBN: 978-1-62708-329-4
... volumes of the ASM Handbook series: Steel Heat Treating Fundamentals and Processes , Volume 4A (2013); Induction Heating and Heat Treatment , Volume 4C (2014); Heat Treating of Irons and Steels , Volume 4D (2014); and Heat Treating of Nonferrous Alloys , Volume 4E (2016...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006830
EISBN: 978-1-62708-329-4
... Hook Example 9: Fatigue Fracture of a Grade 1040 Steel Coil Hook Example 10: Fatigue Fracture of an Eye Bolt Low-carbon steel chains are in wide use and are generally acceptable. However, to ensure a greater margin of safety, alloy steel chains with a hardness of 302 to 352 HB...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003528
EISBN: 978-1-62708-180-1
... relief, induction hardening, service temperature, thermal strains, etc.) X-Ray Diffraction Theory and Residual Stress Measurement The XRD technique uses the distance between crystallographic planes, that is, d -spacing, as a strain gage. This method can only be applied to crystalline...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006768
EISBN: 978-1-62708-295-2
... in service (mechanical or thermal fatigue) May have been subject to improper processing on manufacture (shot peening, grinding, milling, etc.) May have been subject to inappropriate heat treatment (stress relief, induction hardening, service temperature, thermal strains, etc.) The XRD technique...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003554
EISBN: 978-1-62708-180-1
... intergranular crack propagation. 554×. Source: Ref 11 Spacecraft separation springs were cold coiled from 13 mm (0.5 in.) 9254 alloy steel high-strength rod ( Ref 12 ). The springs were electroplated with tin and subsequently given a hydrogen embrittlement relief heat treatment at 200 °C (400 °F). Dye...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003524
EISBN: 978-1-62708-180-1
... an alternating current is placed around or near the surface of the sample, it will set up eddy currents within the material by electromagnetic induction. These eddy currents affect the impedance in the exciting coil or any other pickup coil that is nearby. Cracks or flaws within the sample will cause distortions...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006786
EISBN: 978-1-62708-295-2
... propagation. (c) SEM micrograph showing an area similar to (b) at higher magnification. (a, b) Original magnification: 554×. (c) Original magnification: 1953×. Source: Ref 11 Spacecraft separation springs were cold coiled from 13 mm (0.5 in.) 9254 alloy steel high-strength rod ( Ref 12 ). The springs...