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cavity molds

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Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0009072
EISBN: 978-1-62708-177-1
... methods and when each is advantageous Sample clamping—no mold Cavity mold—casting resin Hand mount Automated polishing X X … Hand polishing … X X Fragile features … X … Length/volume of specimens X z … Multiple amples per mount X z z Quick preparation X … X...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0009017
EISBN: 978-1-62708-187-0
...Abstract Abstract A gating system is the conduit network through which liquid metal enters a mold and flows to fill the mold cavity, where the metal can then solidify to form the desired casting shape. This article discusses various desirable design considerations for the gating system. Proper...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005244
EISBN: 978-1-62708-187-0
...Abstract Abstract Cores are separate shapes of sand that are placed in the mold to provide castings with contours, cavities, and passages that are not otherwise practical or physically obtainable by the mold. This article describes the basic principles of coremaking and the types of core sands...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0009022
EISBN: 978-1-62708-187-0
... be uniform or nearly uniform in thickness. Many problems in producing castings having walls of uniform thickness are associated with the premature freezing of molten metal before all parts of the mold cavity have been filled. This article discusses the design problems and solutions of various castings...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005420
EISBN: 978-1-62708-196-2
... Abstract Abstract This article focuses on the concepts involved in heat-transfer modeling, thermomechanical modeling, and microsegregation modeling of hot tearing. It discusses the modeling of solidification defects, namely, inclusion entrapment, segregation, shrinkage cavities, gas porosity, mold-wall...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0009019
EISBN: 978-1-62708-187-0
... the center configuration of this semipermanent mold aluminum casting. By increasing the wall thickness and placing the inner face of the wall in line with the inner edge of the flanges, defects were eliminated and a simple metal core produced the center cavity. Fig. 8 By eliminating a thin core...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003016
EISBN: 978-1-62708-200-6
.... The size of the parts that can be produced by continuous extrusion is limited by the hot-melt strength of the thermoplastic. In the continuous blow-molding process, single or multiple heads are used to produce one or more parisons at the same time. Single- or multiple-cavity molds are rotated...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005260
EISBN: 978-1-62708-187-0
... Aluminum Manufacturing Co. Fig. 2 Two types of manually operated permanent mold casting machines. (a) Simple book-type mold for shallow-cavity castings. (b) Device with straight line retraction for deep-cavity molds Fig. 14 Recommended dimensional standards for permanent mold castings...
Series: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0005976
EISBN: 978-1-62708-168-9
.... The cavity is machined and it may be used at this hardness. For maximum wear resistance, molds may be carburized or nitrided. This classification includes several grades which usually have similar material properties as P20 but better hardenability as a result of higher alloy contents. There also exist...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006141
EISBN: 978-1-62708-175-7
... What is Metal Injection Molding Part Selection Feedstock Tooling Injection Molding Debinding Consolidation Post Sinter Secondary Operations Advantages and Limitations of Metal Injection Molding Future Shrink Factor and Cavity Expansion Factor Mold Flow Analysis...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006513
EISBN: 978-1-62708-207-5
... component design requires multiple cores, movable mold components, or complicated inner cavities and undercuts. Sand cores become necessary when the design prohibits drawing the core after the casting solidifies. When sand cores replace part of the metal mold, the process is called “semipermanent mold...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003018
EISBN: 978-1-62708-200-6
... ( Fig. 1 ). The heated sheet is positioned over the mold cavity and is pulled into the cavity by vacuum. In basic female molding, the portion of the sheet that first makes contact with the mold is the thickest, while corners and edges are the thinnest. Fig. 1 Basic female mold thermoforming...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005503
EISBN: 978-1-62708-197-9
... characterizing a ratio of inertia force to viscous force) is low, and the flow is modeled as a creeping flow with lubrication, as treated with the Hele-Shaw formulation. With the Hele-Shaw model, the continuity and momentum equations for the melt flow in the injection molding cavity are merged into a single...
Book Chapter

Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006338
EISBN: 978-1-62708-179-5
... dimensions change Cracked or broken mold Cavities B 100: Cavities with generally rounded, smooth walls perceptible to the naked eye (blowholes, pinholes) B 110: Class B 100 cavities internal to the casting, not extending to the surface, discernible only by special methods, machining...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005261
EISBN: 978-1-62708-187-0
... the fill tube and through the mold. Complex molds may require several different “ramps” in the profile to account for changes in the cross-sectional area of the mold cavity as the metal fills. Innovations in predictive pressure control can now provide very accurate and repeatable control of a filling...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006303
EISBN: 978-1-62708-179-5
... metal. The article concludes with a discussion on feeding of ductile iron. compacted graphite iron ductile iron castings feeding systems filling gray cast iron THE GATING AND FEEDING SYSTEM in the casting of iron serves several purposes: Filling the mold cavity without turbulence...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003171
EISBN: 978-1-62708-199-3
... in Fig. 9 . Metal is poured into the pouring basin, down a sprue, where it enters the runner, which delivers it to gates, through which it flows into the casting cavity in the mold. Filters placed in the runners slow the metal and remove inclusions, and vents on the casting allow air to escape...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003019
EISBN: 978-1-62708-200-6
... closing, compressing material to fill cavity Fig. 5 Size of charge in relation to tool Abstract Abstract The compression molding process is most commonly called the sheet molding compound (SMC) process in reference to the precursor sheet molding compound material it uses. This article...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005251
EISBN: 978-1-62708-187-0
...–6 weeks Production: 2–6 weeks after approval Sand castings Treated sand is molded around a wood or metal pattern. The mold halves are opened and the pattern removed. Metal is poured into the cavity. The mold is broken and the casting removed. Tons 1–5° 635 25 All $800–4000 Samples: 2–6...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003172
EISBN: 978-1-62708-199-3
...) microstructures of aluminum alloy 357 (Al-7Si-0.5Mg). Both 200× Fig. 12 Elementary sequences in producing V-process molds Fig. 15 Book-type manually operated permanent mold casting machine, used principally with molds having shallow cavities Fig. 16 Automatic permanent mold casting...