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Foundry practice

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c9001490
EISBN: 978-1-62708-232-7
... Abstract A steel pot used as crucible in a magnesium alloy foundry developed a leak that resulted in a fire and caused extensive damage. Hypotheses as to the cause of the leak included a defect in the pot, overuse, overheating, and poor foundry practices. Scanning electron microscopy...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0047297
EISBN: 978-1-62708-235-8
... ferrite. This anomalous structure is caused by shortcomings in the foundry practice of chemical composition, solidification, and inoculation control. Judging from the microstructure, the strength of the material was lower than desired for class 30 gray iron, and the suspected heat treatment further...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c0089696
EISBN: 978-1-62708-220-4
... castings be properly inspected before machining. Revision of foundry practice to reduce or eliminate porosity was also recommended. ASTM A148 grade 105-85 (Medium-carbon steel casting) UNS D50800 Joining-related failures Casting-related failures Fatigue fracture Background The cast steel...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001089
EISBN: 978-1-62708-214-3
... that crosshead castings be properly inspected before machining. Revision of foundry practice to reduce or eliminate porosity was also recommended. Compressors Porosity Repair welding Welded joints Welding parameters ASTM A148 grade 105-85 UNS D50800 Joining-related failures Casting-related failures...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001026
EISBN: 978-1-62708-214-3
... before further processing and that foundry practices be reviewed to correct deficiencies leading to excessive hydrogen absorption during melting and casting. Castings Cleavage Martensitic stainless steels Military planes Supports Transgranular fracture Wings (aircraft) 17-4 PH UNS S17400...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c0089572
EISBN: 978-1-62708-218-1
... that were formed before the castings were heat treated. Recommendations included the following changes in processing: better gating and risering in the foundry to achieve sounder castings; better shakeout practice to avoid mechanical damage; better inspection to detect imperfections; and normalizing...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001522
EISBN: 978-1-62708-235-8
... process. Foundry practice Gating and risering Housings Permanent mold castings Porosity A357 UNS A13570 Casting-related failures A concerted research effort undertaken to improve the strength properties of cast aluminum forward housing assemblies for guided munitions may improve...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001375
EISBN: 978-1-62708-215-0
... that the manufacturer work with the foundry to evaluate the criticality of core placement and to eliminate the undesired thin section. Foundry practice Sprinklers Valves Class 30 Casting-related failures Background Three gray iron dry pipe valve castings were submitted for metallurgical analysis. Two...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0089646
EISBN: 978-1-62708-235-8
... the failure. Recommendations included establishing closer control of chemical composition and foundry casting practices to alleviate the carbon-flotation form of segregation. Additionally, some nonmetallurgical practices in journal-finishing techniques were suggested to ensure optimal surface finish...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c0089617
EISBN: 978-1-62708-232-7
... sticking to the bore surface. Recommendations included reducing the pouring temperatures of the molten metal and spraying a thicker insulating coating onto the mold surface. Centrifugal casting Foundry practice Molds Overheating 4130 UNS G41300 Casting-related failures The forged 4130...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006831
EISBN: 978-1-62708-329-4
... and the foundry engineers. Foundry personnel are an invaluable source of information on what can be produced in cast form, both in terms of geometry and materials selection. This input should be sought early in the design process to incorporate the suggestions where practical. This can also have a dramatic impact...
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
... or imperfection is preferred when referring to deviations in less-than-perfect castings, the term casting defect is sometimes used for general imperfections as well. Unfavorable foundry practice can result in various casting imperfections that are detrimental in service and that may contribute to failure...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.9781627083294
EISBN: 978-1-62708-329-4
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006826
EISBN: 978-1-62708-329-4
...) failures: In-service part failures caused by undesired surface layers: Surface metallurgy, roughness or topography damage associated with metal-removal practices can lead to workpiece rejection during inspection or in-service part failure. In-service part failures caused by metallurgical factors...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001753
EISBN: 978-1-62708-241-9
... features of intergranular fracture. References References 1. Standard Specification for Aluminum-Alloy Sand Castings, B26/B26M, 2009 . ASTM International , West Conshohocken, PA ( 2009 ). 10.1520/B0026_B0026M-09 , www.astm.org 2. Standard Practice for Heat Treatment of Aluminum...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001082
EISBN: 978-1-62708-214-3
... with AISI 304L specification requirements for chemical composition and with AISI/ASTM grade CF 3 heat treatment requirements. Dimensional specifications were prepared by the pump owner and foundry, and were based on examination of four original nickel-aluminum bronze impellers. Performance of Other Parts...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006759
EISBN: 978-1-62708-295-2
... results. When chemical analysis techniques and practices are applied correctly, substantial information can be obtained, such as: Verification that appropriate materials were used per the component design and material specifications Identification of harmful contaminants in the system...
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
... if there was more than one frequency present. A 16:1 zoom plot of the vibration at one of the residences clearly showed the presence of several frequencies, all close to 300 cpm. The next step in the investigation was to make a survey of the vibration present at the nearby factory. The factory was a foundry...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001834
EISBN: 978-1-62708-241-9
... on the microstructure of the oxidation film of T91 steel tube under the high temperature and high pressure water vapor . Foundry Technol . 26 ( 3 ), 202 – 204 ( 2005 ) 5. Tu S.-T. , Zhang H. , Zhou W.-W. , Corrosion failures of high temperature heat pipes . Eng. Fail. Anal . 6 ( 6 ), 363...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003536
EISBN: 978-1-62708-180-1
..., and practical examples are provided. fracture profilometry quantitative fractography scanning electron microscope three-dimensional fracture surface reconstruction A FRACTURE SURFACE is generated by the deformation and fracture processes operative at numerous length scales ranging from nanometers...