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Shot cleaning

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Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001377
EISBN: 978-1-62708-215-0
... into the normally sealed bearing cap chamber surrounding the bolt shank. A complete absence of fractures in bolts from one of the two vendors was attributed primarily to surface residual compressive stresses produced on the bolt shank by a finish machining operation after heat treatment. Shot cleaning, with fine...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0006402
EISBN: 978-1-62708-217-4
... Abstract New aircraft wing panels extruded from 7075-T6 aluminum exhibited an unusual pattern of circular black interrupted lines, which could not be removed by scouring or light sanding. The panels, subsequent to profiling and machining, were required to be penetrated inspected, shot peened...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001381
EISBN: 978-1-62708-215-0
... inclusions UNS G43406 Ductile fracture Background During assembly, a helicopter main rotor made of AISI E4340 steel failed while being torqued. The torque being applied reached approximately 100 N . m (900 lbf . in.) when the pitch horn bolt sheared and shot across the hangar. No other bolts were...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001679
EISBN: 978-1-62708-229-7
... direction. Since the EB weld is a shrink fit, the surface is in compression, thereby eliminating crack propagation. In addition, shot peening has been employed to produce a compressive material surface since fatigue usually originates at the surface. Pitting was observed down the throat of the venturi...
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
... manufactured according to specification SAE J157, “Oil Tempered Chromium-Silicon Alloy Steel Wire and Springs.” Shot peening and a surface coating were also required. The nominal wire diameter was 4.9 mm (0.192 in.). Investigation Figure 9 shows a helical spring that completely fractured, and Fig. 10...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001731
EISBN: 978-1-62708-217-4
... the cylinder and it was given a magnetic particle inspection. No indications of flaws were observed. All edges were reworked to a radius of 0.050 to 0.100 in. It was then shot peened, cadmium plated, given another magnetic particle inspection, and painted. After the overhaul it was installed in a landing-gear...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001813
EISBN: 978-1-62708-180-1
... that there was sliding motion over a region about 0.1 mm (0.004 in.) in length. It was concluded that fretting in this area had lowered the fatigue strength. In this instance, and in many others, the proximity of one coil to another does not permit some areas to be shot peened properly, and this can contribute...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001041
EISBN: 978-1-62708-214-3
... fatigue strength improvement techniques have been developed, such as toe grinding ( Fig. 19 ) and tungsten-inert gas (TIG) dressing ( Fig. 20 ). These techniques remove the microscopic intrusions at the weld toe. Other techniques, such as hammer peening, shot peening, or overloading, rely...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006864
EISBN: 978-1-62708-395-9
... be difficult to clean and purge because abrasive purging compounds can damage the teeth of the gear pump and reduce output accuracy. Fig. 11 Operation of a gear pump. Adapted from Ref 1 Webline Handling The postextrusion handling of extruded products is called the webline unit...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006829
EISBN: 978-1-62708-295-2
... fretting fatigue (i.e., crack nucleation and crack propagation) ( Ref 10 , 15 – 18 ). Fortunately, new surface treatments combining shot and laser peening with a thick self-lubricant plasma coating are now applied to prevent any critical damage process ( Ref 17 ). Fig. 3 Fretting wear damage...
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
... on the outboard generator. The first balance shot was installed in that rotor. The balancing reduced the vibration levels in the horizontal direction and increased the levels in the vertical direction. Therefore, the influence coefficients indicated that it would not be possible to balance the unit in that rotor...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003562
EISBN: 978-1-62708-180-1
... shows that a rougher surface suffers less damage ( Ref 38 ). Shot peening is a widely applied surface treatment that produces roughening, work hardening, and a residual compressive stress in the surface. The author showed that shot peening a steel surface reduced the coefficient of friction...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001536
EISBN: 978-1-62708-229-7
.... In some cases, the transition region of the pump cover has been modified to reduce the thermal gradient responsible for the cyclic stresses. In addition, the surfaces of new and repaired shafts are being shot peened to produce residual compressive stresses before they are placed into service. 4.4 Nickel...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001812
EISBN: 978-1-62708-180-1
... surfaces where SCC is most likely to originate. Cold rolling and shot peening are two means of keeping static tensile stresses at the operating surface below the safe maximum. However, the beneficial effects of either of these will be negated if the fastener is subsequently heat treated, if the normal...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003508
EISBN: 978-1-62708-180-1
... to insufficient metal poured Poured short E 123 Casting incomplete due to loss of metal from mold after pouring Runout E 124 Significant lack of material due to excessive shot-blasting Excessive cleaning E 125 Casting partially melted or seriously deformed during annealing Fusion...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006805
EISBN: 978-1-62708-329-4
... is most likely to originate. Cold rolling and shot peening are two means of keeping static tensile stresses at the operating surface below the safe maximum; however, the beneficial effects of either of these will be negated if: The fastener is subsequently...
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
... of material, mechanical properties, heat treatment, test locations, nondestructive examination used, and other processing requirements should also be noted. Special processing or finishing treatments, such as shot peening, fillet rolling, burnishing, plating, metal spraying, and painting, can influence...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006927
EISBN: 978-1-62708-395-9
... if the process cannot be repeated consistently shot after shot. Another example that can illustrate the benefit of process consideration during visualization is found in designing parts for the thermoforming process. Thinking through the process while creating the part design must also include the post...
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
..., and/or wear conditions are being investigated. In an analysis of a fracture, the following steps are described: Selection, identification, preservation, and/or cleaning of critical specimens Macroscopic examination and analysis (fracture surfaces, secondary cracks, and other surface phenomena...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003527
EISBN: 978-1-62708-180-1
... of Color Photography , Focal Press , 1998 • Hicks R. and Schultz F. , Pro Lighting, Product Shots, A Guide to Professional Lighting Techniques , Quarto Publishing , Rotovision, Inc., 1994 • Hicks R. and Schultz F. , Pro Lighting, Special Effects, A Guide...