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permanent-mold castings

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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
...Abstract Abstract In the EMD-2 Joint Directed Attack Munition (JDAM), the A357 aluminum alloy housing had been redesigned and cast via permanent mold casting, but did not meet the design strength requirements of the previous design. Mechanical tests on thick and thin sections of the forward...
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
...Abstract Abstract A forged 4130 steel cylindrical permanent mold, used for centrifugal casting of gray- and ductile-iron pipe, was examined after pulling of the pipe became increasingly difficult. In operation, the mold rotated at a predetermined speed in a centrifugal casting machine while...
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
... causing a localized seam Oxide inclusion or skins, seams G 143 (a) Folded films of graphitic luster in the wall of the casting Lustrous carbon films, or kish tracks G 144 Hard inclusions in permanent molded and die cast aluminum alloys Hard spots (a) Defects that under some...
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
... of oxide skins, most often causing a localized seam Oxide inclusion or skins, seams G 143 (a) Folded films of graphitic luster in the wall of the casting Lustrous carbon films, or kish tracks G 144 Hard inclusions in permanent molded and die cast aluminum alloys Hard spots...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c9001543
EISBN: 978-1-62708-218-1
... . Because this material is extremely abrasive, it damaged both piston and cylinder walls when rubbing between them. The coarse grain size of the structure is an effect of permanent mold casting, and there was no evidence of grain growth due to high temperatures. Inasmuch as the surface temperatures were...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001760
EISBN: 978-1-62708-241-9
... Alloy Permanent Mold Casting Alloy Material Specification , Standard No. IK-150-11-1-0014 ( 2007 ) 3. Test Method for Brinell Hardness Test of Metallic Materials , Standard No. ASTM E10-06 ( 2006 ) 4. Properties and Selection: Nonferrous Alloys and Special-Purpose Materials , vol. 2 . ASM...
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 Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003536
EISBN: 978-1-62708-180-1
... length through Si particles was observed to be 0.16 in the vertical section fracture profile of a tensile fracture surface of chill cast A356 aluminum alloy having a volume fraction of Si particle equal to 0.074. In this case, as P f is significantly higher than the silicon particle volume fraction...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c9001591
EISBN: 978-1-62708-227-3
... the casting, care was taken to shield the molten steel from contact with the atmosphere. A tundish located directly above the continuous casting mold trapped inclusions and slag that floated in the molten stream of steel. The slabs were heated to the desired rolling temperature to produce a plate 1.25 cm...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003507
EISBN: 978-1-62708-180-1
... the Ingot Many flaws in wrought products can be traced back to the pouring and solidification of hot metal in molds during production of ingot. Except for forged powder metal components, the starting material in bulk working is a slab, ingot, billet, and so forth produced by casting into stationary...
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
..., age-hardening aluminum alloys, etc.), its general product form (e.g., wrought, cast, powder metallurgy, additive manufacture, etc.), and the processing method (e.g., forged, die cast, injection molded, etc.). All of these factors must be considered when the shape of a part is defined during...
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
..., stainless steel, age-hardening aluminum alloys, etc.), its general product form (e.g., wrought, cast, powder metallurgy, etc.), and the processing method (e.g., forged, die cast, injection molded, etc.). All of these factors must be considered when the shape of a part is defined during configuration design...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006816
EISBN: 978-1-62708-329-4
.... The major casting imperfections that may affect induction-hardened workpieces are blowholes or gas holes, which may appear as subsurface voids. These voids can cause nonuniform heating and hot spots. Inclusions may occur during the pouring of molten metal into a casting the mold. They become elongated...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003500
EISBN: 978-1-62708-180-1
..., neither may be “bad” if the analysis actually indicates the failed component met all requirements but was subjected to abuse in service. On completion of the failure analysis, judgmental terminology is often appropriate to use if the evidence supports it, such as in the example of a casting defect...
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
... in northeastern United States results in vehicle electrical problems, traced to corroded electrical contacts. Wear Incompatible wear couple is specified in the design of an injection mold/ejector pin assembly, resulting in galling and seizure. Improper melting and hot working processes lead to poor...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003548
EISBN: 978-1-62708-180-1
..., such as magnesium or zinc, may be introduced into the galvanic assembly. The most active member will corrode while providing cathodic protection to the other members in the galvanic assembly (for example, zinc anodes in cast iron waterboxes of copper alloy water-cooled heat exchangers). Cathodic protection...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006783
EISBN: 978-1-62708-295-2
... preferentially while providing cathodic protection to the other members in the galvanic assembly (for example, zinc anodes in cast iron waterboxes of copper alloy water-cooled heat exchangers). Cathodic protection is often used for the protection of underground or underwater steel structures. The use...
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
... If temporary or permanent repairs, physical modifications, or rating (pressure/temperature) changes are needed Satisfying code and regulatory requirements Good engineering and safe work practice considerations. Current risk to other similar equipment could also be identified. Often, the root cause...
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
... heads and an 8-mm ( 5 16 -in.) thick SA455A steel shell, ruptured after about 3 years of service, launching the body of the vessel into a neighboring house. The accumulator was used in a plastic molding operation and operated at a pressure of 827 kPa (120 psi), dropping to 780 kPa (113 psi...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003552
EISBN: 978-1-62708-180-1
... embrittlement, in classic form, is reversible, in that the damage should be eliminated by removing the hydrogen. However, hydrogen can also cause permanent damage from exposure to environmental hydrogen during service. Gaseous environments containing hydrogen are also damaging. Hairline cracking usually follows...