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induction heating

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0047865
EISBN: 978-1-62708-225-9
... was revealed after etching with 1% nital. The presence of a crack, with typical oxides found in seams at its root, was disclosed by an unetched section through the shaft in an area unaffected by induction heating. The etched samples revealed similar decarburization as was noted on the fracture surface...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0048791
EISBN: 978-1-62708-234-1
...Abstract Abstract Linear indications on the outer surface of a cross in a piping system were revealed by dye-penetrant examination. The cross was specified to be SA403 type WP 304 stainless steel. The cross had been subjected to induction-heating stress improvement. The linear indications...
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
.... pipe hot cracking grain boundary segregation stainless steel tear ridges melt bridging microfractography induction heating frequency X6CrNiMoTi17-12-2 (titanium-stabilized austenitic stainless steel) UNS S31635 Introduction Large austenitic stainless steel piping used for manifolds...
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
..., and tensile stress, which would most likely lead to crack initiation. Firstly, the low melting metal or alloy contacted or attached to base metal before forming as shown in Fig. 4a . Secondly, the low melting metal or its alloy met the high temperature of nearly 1000 °C during the induction heating, at which...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001260
EISBN: 978-1-62708-235-8
... through hardening and heat treatment does not present any serious difficulty. Care is still required in processing to avoid decarburization. In an application of track pins for tracked vehicles, bars about 22 mm diam were required in heat treated and centerless-ground condition prior to induction...
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
... ). The conical section contained one longitudinal and two circumferential welds. Three independently controlled induction coils, which coupled directly to the platinum, were used to heat the CIM. The first coil surrounded the vertical section of the melter, and the second set of coils was used to heat...
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
... heat treat hardening specifications. The mode of failure was tooth profile spalling. By definition, spalling originates at a case/core interface or at the juncture of a hardened/nonhardened area. The cause of this failure was either insufficient or no induction-hardened case along the active profile...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001846
EISBN: 978-1-62708-241-9
..., bearing bush, and journal surface. The excessive heat also softened the induction-hardened case on the journal surface, decreasing its fatigue strength. Fatigue crack initiation occurred at the root fillet of the groove because of stress concentration. rotary shaft bearing sleeve fracture...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c0047406
EISBN: 978-1-62708-232-7
...Abstract Abstract A cast countershaft pinion on a car puller for a blast furnace broke after one month of service; expected life was 12 months. The pinion was specified to be made of 1045 steel heat treated to a hardness of 245 HRB. The pinion steel was analyzed and was a satisfactory...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001597
EISBN: 978-1-62708-236-5
... for making the steel, forging the shape, and preliminary heat treatment; and (3) a supplier that provided induction hardening, finish machining, and inspection. An independent engineering firm was subsequently involved, but because each party had its own agenda, there was no agreement on the metallurgical...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001762
EISBN: 978-1-62708-241-9
.... There is also a change in geometry which must be handled by the induction heating and quenching unit. Figure 3 shows a typical flange radius fracture. The fracture starts perpendicular to the axle surface. However, as the crack front nears the back surface, it bends over to follow a tensile stress path...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001808
EISBN: 978-1-62708-180-1
... grinding damage, machining marks or nicks, and quench cracks resulting from heat treating operations. Frequently, stress concentrators are introduced during hot or cold forming of shafts; these include surface discontinuities, such as laps, seams, pits and forging laps, and internal imperfections...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001056
EISBN: 978-1-62708-214-3
.... Simulation Tests Figure 8 depicts the specimens used in thermal fatigue simulation tests. The temperature cycle was achieved by means of a 10 kW induction heating furnace, increasing the temperature from 100 to 300 °C (212 to 570 °F) in 30 s and cooling it back down to 100 °C (212°F) in 17 s...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001301
EISBN: 978-1-62708-215-0
... resistance. Considering the large size of these gears, induction heat treatment may be advantageous. Selected References Selected References • Failures Related to Casting , Failure Analysis and Prevention , Vol 11 , ASM Handbook , ASM International , 2002 , p 103 – 155 10.31399/asm.hb.v11...
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
.... An induction furnace in a steel mill was used to heat and diffuse galvanize (zinc) into the steel strips. A loud, high pitch frequency would radiate from the steel plate during the induction heating process. When the sound began, vertical stripes would also appear on the plating. The stripes on the galvanized...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003510
EISBN: 978-1-62708-180-1
... in undesirable grain growth. Heating and Atmosphere Control Localized overheating is particularly a potential problem for inductively heated parts ( Ref 28 , 29 ). Subsequent quenching of the part leads to quench cracks at sharp corners and areas with sudden changes in cross-sectional area (stress...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003570
EISBN: 978-1-62708-180-1
... than 12% Cr steel. All of the commonly used blade alloys are protected from liquid-droplet impingement in the last blade row by local hardening (by flame or induction heating), brazed-on shields of Stellite 6B, or welded-on hard facing. Helicopter rotors are made of titanium sheet laid over...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006766
EISBN: 978-1-62708-295-2
.... The discussion covers the operating principles, applications, advantages, and disadvantages of optical emission spectroscopy (OES), inductively coupled plasma optical emission spectroscopy (ICP-OES), X-ray spectroscopy, and ion chromatography (IC). In addition, information on combustion analysis and inert gas...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001818
EISBN: 978-1-62708-180-1
... been subjected to an induction-heating stress improvement-induction heating the outer wall of the pipe to 550 to 600 °C (1020 to 1110 °F) maximum for a maximum of 12 min while the inside is cooled with water. This treatment leaves a residual tensile stress on the outer surface and a residual...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001809
EISBN: 978-1-62708-241-9
...Abstract Abstract A brackish water pump impeller was replaced after four years of service, while its predecessor lasted over 40 years. The subsequent failure investigation determined that the nickel-aluminum bronze impeller was not properly heat treated, which made the impeller susceptible...