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Coil springs

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Published: 01 January 2002
Fig. 18 Stress versus depth profiles for different steel coil springs More
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Published: 01 June 2019
Fig. 1 Stress versus depth profiles for different steel coil springs More
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Published: 15 January 2021
Fig. 18 Stress versus depth profiles for different steel coil springs More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001547
EISBN: 978-1-62708-225-9
... for 17-7 PH CH900 and for Custom 455 CH850 stainless steels. Laboratory testing of these two materials in the form of compression springs confirmed the superiority of the 17-7 PH over Custom 455. Aerospace components Coil springs Surface defects 302 UNS S30200 17-7 PH UNS S17700 Custom 455...
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Published: 01 January 2002
Fig. 34 Coil spring made from AISI H12 tool steel that cracked after heat treatment. A tight seam that was not removed by centerless grinding before heat treatment opened during hardening (arrows). 0.3× More
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Published: 30 August 2021
Fig. 2 (a) Fatigue fracture surface of a coil spring that failed prematurely due to a subsurface inclusion; (b) as shown with SEM imaging More
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Published: 30 August 2021
Fig. 18 Automotive coil spring that fractured due to corrosion More
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Published: 30 August 2021
Fig. 34 Coil spring made from AISI H12 tool steel that cracked after heat treatment. A tight seam that was not removed by centerless grinding before heat treatment opened during hardening (arrows). Original magnification: 0.3× More
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006836
EISBN: 978-1-62708-329-4
... and were submitted for laboratory analysis. The springs were from a current production lot and had been made from air-melted 6150 pretempered steel wire. The springs were 50 mm (2 in.) in outside diameter and 64 mm (2.5 in.) in free length, had five coils and squared-and-ground ends, and were made of 5.5...
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Published: 15 January 2021
Fig. 17 Torsional fatigue failure of boron-containing alloy steel helical spring. Fatigue initiated at an abraded area marked by arrows. The material in compression coil springs is subjected to unidirectional torsion, so fatigue propagates on a single helical surface. Source: Ref 4 More
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Published: 01 January 2002
Fig. 17 Torsional fatigue failure of boron-containing alloy steel helical spring. Fatigue initiated at an abraded area marked by arrows. The material in compression coil springs is subjected to unidirectional torsion, so fatigue propagates on a single helical surface. Source: Ref 4 More
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Published: 01 January 2002
Fig. 26 Comparison of the residual stress on the inner diameter of shot-peened coil springs in new and used conditions using XRD More
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Published: 15 January 2021
Fig. 26 Comparison of residual stress on the inner diameter of shot-peened coil springs in new and used conditions using x-ray diffraction More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0048143
EISBN: 978-1-62708-235-8
... Figure 1(a) shows the surface of one spring at the origin of failure. The origin was at the outside surface of the coiled spring despite higher stress at the inside surface (due to the Wahl effect). Fig. 1 Fractured music-wire spring. (a) Fracture surface at 9.2×; arrow indicates fracture origin...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c0090626
EISBN: 978-1-62708-218-1
... for this component. Fig. 1 Stress versus depth profiles for different steel coil springs Acknowledgments The authors would like to thank Debbie Aliya, Clayton O. Ruud, Stan Berkley, Robert Drake, and Fred Tonch for their helpful insight and careful review of the ideas presented in the source article...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001267
EISBN: 978-1-62708-215-0
... fracture Background Music wire springs used in a printer return mechanism failed near the bend in the hook portion of the spring during qualification testing. Applications Music wire springs were specified for a new printer application. The springs were 21-coil music wire springs wound from...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c0051294
EISBN: 978-1-62708-221-1
... the cause of failure. The fatigue fracture origin was found on the inside surface of the legs at the point where they joined the coiled body of the spring. It was established that the tines after being wound up by loading with hay, sprung back through the neutral unloaded position and into the unwind...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001119
EISBN: 978-1-62708-214-3
... initiated from the spring inside coil surface. Examination of the fracture surface using scanning electron microscopy showed no evidence of fatigue. Final fracture occurred in torsion. X-ray diffraction analysis revealed high inner-diameter residual stresses, indicating inadequate stress relief from spring...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001118
EISBN: 978-1-62708-214-3
... Abstract Failure of AISI type 321 stainless steel internal springs from newly manufactured lip seals on a shaft between a turbine power unit and a pump in a commercial aircraft secondary unit was investigated. Examination of the coils from two failed springs showed that both had failed...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0048117
EISBN: 978-1-62708-235-8
... Abstract Two outer valve springs made from air-melted 6150 pretempered steel wire broke during production engine testing. The springs were 50 mm in OD and 64 mm in free length, had five coils and squared-and-ground ends, and were made of 5.5 mm diam wire. It was revealed that fracture...