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1-20 of 1932
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Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0009014
EISBN: 978-1-62708-187-0
... Abstract This article discusses issues that impact a good casting design. The focus is on the casting design in general, and on sand and permanent mold aluminum casting in particular. The article examines the casting design process from a variety of design and processing perspectives...
Abstract
This article discusses issues that impact a good casting design. The focus is on the casting design in general, and on sand and permanent mold aluminum casting in particular. The article examines the casting design process from a variety of design and processing perspectives. It summarizes several strategies for improving the traditional casting design process. The article also proposes some possible approaches for implementing these strategies. It presents a vision for the development of comprehensive casting design guidelines along with specific development objectives.
Book Chapter
Casting Design and Processes
Available to PurchaseBook: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0009015
EISBN: 978-1-62708-187-0
... Abstract This article provides a general introduction on casting processes and design techniques. It discusses the process steps and methods of the main categories of shape casting methods, namely, expendable molds with permanent patterns, expendable molds with expendable patterns, and metal...
Abstract
This article provides a general introduction on casting processes and design techniques. It discusses the process steps and methods of the main categories of shape casting methods, namely, expendable molds with permanent patterns, expendable molds with expendable patterns, and metal or permanent mold processes. The article lists the general guidelines of geometry in casting design. It describes the three separate contractions that are a result of cooling: liquid-liquid contraction, solid-solid contraction, and liquid-solid contraction. Factors influencing the solidification sequence of simple shapes, such as T-sections, X-sections, and L-sections, are discussed. The article also presents an overview of geometric factors that influence heat transfer and transport phenomena. It concludes with a description of the structure and properties of castings.
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0009020
EISBN: 978-1-62708-187-0
... Abstract Casting offers a great amount of component design flexibility. This article discusses six casting design parameters that drive the geometry of casting design from a process standpoint. It provides information on the design of junctions and addresses considerations of secondary...
Abstract
Casting offers a great amount of component design flexibility. This article discusses six casting design parameters that drive the geometry of casting design from a process standpoint. It provides information on the design of junctions and addresses considerations of secondary operations in design. The article describes the factors that control casting tolerances and presents specific tips for designing castings with uniform wall thickness, unequal sections, thin sections, economical coring, functional packaging, and core design. The article provides a framework for analyzing all manners of manufacturing as possible conversion candidates for casting. It concludes with a discussion on different metalcasting design projects.
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003176
EISBN: 978-1-62708-199-3
... Abstract This article provides general guidelines for casting design to provide progressive solidification, minimize heat concentration, eliminate cores, and prevent distortion. Casting design also affects tolerances. Casting tolerances depend on the alloy being poured, the size of the casting...
Abstract
This article provides general guidelines for casting design to provide progressive solidification, minimize heat concentration, eliminate cores, and prevent distortion. Casting design also affects tolerances. Casting tolerances depend on the alloy being poured, the size of the casting, and the molding method used. Designers can predict the effect of the design on the structure of the final part using solidification simulation models, namely finite element and finite difference models, and rapid prototyping. The article concludes with a short note on how the quality is assured in the foundry.
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Use of brackets in steel casting design (top). Lightening of a casting that...
Available to PurchasePublished: 01 December 2008
Fig. 35 Use of brackets in steel casting design (top). Lightening of a casting that is too massive by means of ribs and recessing (bottom)
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Good casting design, permitting ideal location of gates, made for efficient...
Available to PurchasePublished: 01 December 2008
Fig. 25 Good casting design, permitting ideal location of gates, made for efficient production of this aluminum permanent mold casting. Although this casting had a wall thickness of 0.093 in., the recommended minimum for the material and process ( Table 1 ), all surfaces were produced
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Casting design that would require different shrinkage allowances than those...
Available to PurchasePublished: 01 December 2008
Fig. 5 Casting design that would require different shrinkage allowances than those normally used. Dimension X can contract freely, while dimension Y is restrained by the core used to make the hole.
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Published: 01 December 2008
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Published: 01 December 2008
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Casting design and solidification of a simple wedge. (a) Riser placed at na...
Available to PurchasePublished: 01 December 2008
Fig. 19 Casting design and solidification of a simple wedge. (a) Riser placed at narrow end of wedge; shrinkage occurs at wide end. The crosshatched region represents the approximate area of the casting where solidification is first complete, thus cutting off the feeding path of the casting
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Good casting design permitting ideal location of gates enabled efficient pr...
Available to PurchasePublished: 30 November 2018
Fig. 33 Good casting design permitting ideal location of gates enabled efficient production of this aluminum permanent-mold casting. Although casting wall thickness is only 2.36 mm (0.093 in.), all surfaces were produced to a finish of at least 125 micro-in.
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Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002484
EISBN: 978-1-62708-194-8
... Abstract Casting offers the cost advantages over other manufacturing methods for most components. This article reviews the aspects of castings with which designers should be familiar, as well as the methods used by foundries to produce high-integrity castings. It discusses the design concepts...
Abstract
Casting offers the cost advantages over other manufacturing methods for most components. This article reviews the aspects of castings with which designers should be familiar, as well as the methods used by foundries to produce high-integrity castings. It discusses the design concepts that designers and foundries can use to obtain maximum performance from cast parts. The article describes the effects of casting discontinuities on properties, including porosity, inclusions, hot tears, metal penetration, and surface defects. A discussion on hot isostatic pressing treatment of castings is also provided. The article concludes with information on solidification simulation and its use in designing castings.
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General design rules for riser necks used in iron casting applications (sid...
Available to PurchasePublished: 01 December 2008
Fig. 24 General design rules for riser necks used in iron casting applications (side view and top view, respectively). (a) General type of side riser. (b) Side riser for plate casting. (c) Top round riser. Source: Ref 33
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This aluminum casting illustrates good design for the permanent mold proces...
Available to PurchasePublished: 01 December 2008
Fig. 24 This aluminum casting illustrates good design for the permanent mold process. There is adequate metal around the cast-in-place inserts, and the web is heavy enough to permit feeding of the center section.
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Good design facilitated production of this permanent mold casting from alum...
Available to PurchasePublished: 01 December 2008
Fig. 13 Good design facilitated production of this permanent mold casting from aluminum alloy 355. (See text.)
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Improved design that eliminated one core and eight ribs from a sand casting...
Available to PurchasePublished: 01 December 2008
Fig. 29 Improved design that eliminated one core and eight ribs from a sand casting. This resulted in a stronger, more economical part.
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Design of a casting for automatic degating. A two-cavity die is used to mak...
Available to PurchasePublished: 01 December 2008
Fig. 9 Design of a casting for automatic degating. A two-cavity die is used to make electrical conduit connector castings. Use of thin gates and placement of the mass of the casting at the end of a runner allow the use of tumbling to automatically degate this high-volume part. Zinc casting
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Redesign of casting to minimize heat concentration. (a) Design has numerous...
Available to PurchasePublished: 01 December 2008
Fig. 4 Redesign of casting to minimize heat concentration. (a) Design has numerous hot spots (X junctions) that will cause the casting to distort. (b) Improved design using Y junctions.
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The effects of design on distortion of castings. (a) Top view of casting; n...
Available to PurchasePublished: 01 December 2008
Fig. 17 The effects of design on distortion of castings. (a) Top view of casting; numbers indicate moduli of the two sections. (b) Distortion caused by solidification stresses
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Redesign of a casting to avoid waterfalling. (a) In this design, waterfalli...
Available to PurchasePublished: 01 December 2008
Fig. 42 Redesign of a casting to avoid waterfalling. (a) In this design, waterfalling results when casting is filled from the bottom. (b) Improved design provides a path for the metal to follow as it fills the mold.
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