1-20 of 36 Search Results for

precision hot forging

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006835
EISBN: 978-1-62708-329-4
... are covered. discontinuities hot forming ingot casting metalworking defects nonferrous forging steel forging wrought metal products Introduction to Failures Related to Hot Forming Processes Imperfections from the Ingot Imperfections in Wrought Forms Steel Forging Defects Defects...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c9001535
EISBN: 978-1-62708-232-7
...Abstract Abstract Although a precise understanding of roll failure genesis is complex, the microstructure of a broken roll can often unravel intrinsic deficiencies in material quality responsible for its failure. This is especially relevant in circumstances when, even under a similar mill...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006818
EISBN: 978-1-62708-329-4
... the ring forging revealed decarburization around the cracks. Original magnification: 0.75×. (b) Etching of a polished section with a hot alkaline chromate solution revealed oxygen enrichment indicative of a defect open during forging. Original magnification: 80× Fig. 37 Failure caused...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001814
EISBN: 978-1-62708-180-1
... in cold-working and hot-working applications. It reviews problems introduced during mechanical design, materials selection, machining, heat treating, finish grinding, and tool and die operation. The brittle fracture of rehardened high-speed steels is also considered. Finally, failures due to seams or laps...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001724
EISBN: 978-1-62708-234-1
... by flattening and edging. Hot expanding is carried out on a mandrel in two stages. The forgings are cooled and then rough machined. Expanding (by forging under the press on a mandrel) is carried out after heating the ring to 1925° F., then allowing to cool to 900° F. when expanding commences. Stress...
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 Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001601
EISBN: 978-1-62708-235-8
...Abstract Abstract Flow forming technology has emerged as a promising, economical metal forming technology due to its ability to provide high strength, high precision, thin walled tubes with excellent surface finish. This paper presents experimental observations of defects developed during flow...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006824
EISBN: 978-1-62708-329-4
... methods used in the laboratory portion of the failure investigation are mentioned in the failure examples. The topics covered are creep, localized overheating, thermal-mechanical fatigue, high-cycle fatigue, fretting wear, erosive wear, high-temperature oxidation, hot corrosion, liquid metal embrittlement...
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
... the surface and the core, shown at the bottom right in Fig. 10 ( Ref 9 ), is obtained. If the surface stresses exceed the hot yield strength of the material, it plastically deforms, resulting in thermally induced dimensional changes. Cooling with Transformation...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006765
EISBN: 978-1-62708-295-2
..., or photographed. An etchant should be used that reveals all of the structure at first. Later, it may be useful to use a selective etchant that reveals only the phase or constituent of interest or at least produces strong contrast or color differences between two or more phases present, to improve the precision...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003532
EISBN: 978-1-62708-180-1
... all of the structure at first. Later, it may be useful to use a selective etchant that reveals only the phase or constituent of interest, or at least produces strong contrast or color differences between two or more phases present, to improve the precision of microstructural measurements or to better...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003553
EISBN: 978-1-62708-180-1
... rolled, extruded, or forged products are stressed in the short-transverse direction. In wrought austenitic stainless steels, crack paths are usually transgranular if proper heat treatment has been employed. However, if thermal processing has produced sensitization because of carbide precipitation...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006812
EISBN: 978-1-62708-329-4
... analysis revealed that the cast alloy 400 coupling had a silicon content of 1.97%, whereas the wrought alloy 400 piping had a silicon content of 0.10%. Castings of high-silicon alloy 400 generally have poor weldability and are often hot short, or sensitive to cracking in the weld HAZ. Fissures in the cast...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006800
EISBN: 978-1-62708-329-4
... is to determine whether each design concept will be made from metal, plastics, ceramic, composite, or wood and to narrow it to a group of materials. The precision of property data needed is rather low. If an innovative choice of material is to be made, it should be done at the conceptual design step. Materials...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003501
EISBN: 978-1-62708-180-1
... Design At the concept level of design, materials and processes are considered rather broadly. The decision is to determine whether each design concept will be made from metal, plastics, ceramic, composite, or wood and to narrow it to a group of materials. The precision of property data needed...
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
... in planes related to direction of mold assembly (precision casting with waste pattern); principal casting dimensions change Cracked or broken mold A 200: Massive projections A 210: Swells A 212 (a) Excess metal in the vicinity of the gate or beneath the sprue Erosion, cut, or wash...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006820
EISBN: 978-1-62708-329-4
..., there are dimensional changes to the teeth. Some gears experience tooth surface wear of less than 0.01 mm (0.0004 in.), yet the change in precision motion or the increased noise may be enough to declare the gears as failed. In other cases, there may be 50% (or more) of the tooth thickness worn away, yet the owner...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006838
EISBN: 978-1-62708-329-4
... to a machine, and control the build. A solid model is obtained by computer-aided-design software or 3D object scanners, and the part is additively built, typically layer upon layer, into the precise geometric shapes of the digital model. Polymers were used first in the development of modern AM technology...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006753
EISBN: 978-1-62708-295-2
... to manufacture at normal production rates … Material discontinuities that cause failures in metal products Table 2 Material discontinuities that cause failures in metal products Metal product form Types of discontinuities Forgings Laps Bursts Cracks Flow-through defects Extrusion-type...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003509
EISBN: 978-1-62708-180-1
... at the weld toe Cracks—hot or cold, longitudinal or transverse, crater and at weld toe Gas porosity Arc strike Spatter Backing piece left on: failure to remove material placed at the root of a weld joint to support molten weld metal Subsurface features that are causes for rejection...