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sand molds

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Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006298
EISBN: 978-1-62708-179-5
... Abstract Modeling of gas evolution during sand mold castings is one of the most important technical and environmental issues facing the metal casting industry. This article focuses on describing the capability of numerically predicting gas evolution for the furan binder/silica sand system...
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Published: 31 August 2017
Fig. 2 (a) and (b) Tested furan binder/silica sand molds. Temperature evolution for the tested molds (A356 castings) at superheats of (c) 100 °C (212 °F) and (d) 200 °C (390 °F). Reprinted with permission from John Wiley & Sons, Inc., who reserves all rights. Source: Ref 11 More
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
... plastic film SAND MOLDING PROCESSES are classified according to the way in which the sand is held (bonded). Most sand casting employs green sand molds, which are made of sand, clay, and additives. Binders are also used to strengthen the cores, which are the most fragile part of a mold assembly...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005354
EISBN: 978-1-62708-187-0
... Abstract No-bake sand molds are based on the curing of inorganic or organic binders with either gaseous catalysts or liquid catalysts. This article reviews the major aspects of no-bake sand bonding in terms of coremaking, molding methods, and sand processing. It discusses the points to be noted...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005243
EISBN: 978-1-62708-187-0
... Abstract Green sand molding and chemically bonded sand molding are considered to be the most basic and widely used mold-making processes. This article describes the sand system formulation, preparation, mulling, mold fabrication, and handling of green sand molds. It lists the advantages...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0009018
EISBN: 978-1-62708-187-0
... Abstract This article begins with a schematic illustration of basic principles of sand molding. It discusses the general design factors, such as parting lines, location of radii, bosses and undercuts, and rib locations, of sand molding. The article schematically demonstrates alternative design...
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Published: 01 December 2008
Fig. 8 Sizes of pores in faces of molds made from coarse sand and from fine sand. Original magnification: 35× More
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Published: 01 December 2008
Fig. 2 Cope-and-drag assembly of vacuum-bonded sand mold. The sand in the elevated cope mold is under vacuum and is held in place by the atmospheric pressure against the sand. Courtesy of Auburn University More
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Published: 01 December 2008
Fig. 1 Schematic of a sand mold. The pattern is used to form the mold cavity, the core print for locating the core, the gate, the runner, the riser, and the sprue. A separate core box is used to make the sand core that is inserted into the parted mold before pouring. More
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Published: 01 December 2008
Fig. 28 Cost of shell molding versus green sand molding for production of a chair seat bracket in ascending quantities. Pattern costs not included More
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Published: 01 December 2008
Fig. 30 Cast section of crankshaft from green sand molding and shell-mold casting More
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003172
EISBN: 978-1-62708-199-3
... Abstract This article discusses classification of foundry processes based on the molding medium, such as sand molds, ceramic molds, and metallic molds. Sand molds can be briefly classified into two types: bonded sand molds, and unbonded sand molds. Bonded sand molds include green sand molds...
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Published: 01 December 2008
Fig. 6 Schematic showing the loose sand vacuum process. (a) Several molds, produced using any of the bonded sand technologies, are placed atop a sheet of aluminum foil and protrude slightly below an open bottom tube, with the mold fill runners facing downward. (b) The region between More
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Published: 01 December 2008
Fig. 15 Sand slinger for filling large floor molds More
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Published: 01 December 2008
Fig. 2 Major components of a sand mold (a) pattern assembly for cope and drag sections. (b) Cross section of mold with core More
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Published: 01 December 2008
Fig. 25 Section of a typical sand mold with pouring basin More
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Published: 01 December 2008
Fig. 3 Fluidity tests. (a) Vacuum fluidity test. (b) Fluidity spiral in sand mold. (c) Multichannel fluidity test in metal mold More
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Published: 01 December 2008
Fig. 2 Flow chart of cast iron processing with sand molding. (a) Annealing required for malleable irons. Adapted from Ref 2 More
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Published: 01 December 2008
Fig. 1 Major components of a sand mold. (a) Pattern assembly for cope and drag sections of a mold. (b) Cross section of sand mold assembly with core More
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Published: 01 December 2008
Fig. 1 Basic steps of sand molding in a flask with permanent pattern More