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mold considerations

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.aceg.t68410151
EISBN: 978-1-62708-280-8
... Abstract This chapter discusses the various factors pertinent to gravity permanent mold (GPM) castings, along with their advantages, limitations, and significance. The discussion covers the geometric factors, process and manufacturing elements, gating practices, and feeding principles...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110067
EISBN: 978-1-62708-247-1
... attenuation varies considerably from one formulation to the next. Both the penetration and resolution are noticeably degraded by temperature shock damage to the mold compound. Depth (or axial) resolution is important for distinguishing reflections from closely spaced layers within the package. Depth...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1995
DOI: 10.31399/asm.tb.sch6.t68200115
EISBN: 978-1-62708-354-6
.... The chapter addresses the design of castings to reduce the occurrence of internal shrinkage. It provides a detailed discussion on design considerations for molding, cleaning, machining, and function. cleaning feeding aids foundry machining manufacturing design molding shrinkage steel castings...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 1998
DOI: 10.31399/asm.tb.ts5.t65900001
EISBN: 978-1-62708-358-4
... Abstract Tool steels are the ferrous alloys used to manufacture tools, dies, and molds that shape, form, and cut other materials, including steels, nonferrous metals, and plastics. This chapter explores the considerations that make tool steels a very special class of steels, the long historical...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2023
DOI: 10.31399/asm.tb.ceeg.t59370001
EISBN: 978-1-62708-447-5
... for casting nonferrous alloys such as aluminum. These are addressed in Chapter 8, “Aluminum Die Casting Equipment,”   Chapter 9, “Gravity Permanent and Semipermanent Mold Equipment,” and Chapter 10, “Low Pressure Permanent and Semipermanent Molding, and Counter Pressure Casting,” in this book. The casting...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780055
EISBN: 978-1-62708-281-5
... process is governed by the material behavior, part geometry, and processing conditions. Estimating the flow length of the resin into a mold of a given thickness is an important manufacturing consideration for the design engineer. One example of a generic tool (Diskflow) is capable of analyzing radial flow...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1995
DOI: 10.31399/asm.tb.sch6.t68200133
EISBN: 978-1-62708-354-6
... with radiographic inspection results. Their quick response and user friendliness are important factors in regards to Concurrent Engineering. Fluid Flow Simulation Another major consideration to the foundry engineer is that of designing mold filling methods that will minimize a large array of casting quality...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120039
EISBN: 978-1-62708-269-3
... implants Design Considerations There are a number of broad guidelines to be followed when designing titanium castings: The supplier and customer must work together to identify the desired properties and to define the intended shape. The design must ensure that the mold is filled...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780064
EISBN: 978-1-62708-281-5
... that states “knockout witness to be flush to or 0.125 mm (0.005 in.) below the molding surface.” Draft Draft is the angle in the wall design that facilitates ejection from the mold ( Fig. 7 ). Fig. 7 Types of draft in plastic injection-molded parts Details and Design Considerations...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1995
DOI: 10.31399/asm.tb.sch6.t68200164
EISBN: 978-1-62708-354-6
... The type of pattern equipment to be constructed should be determined by consideration of the following factors: Number of castings to be produced Mold processes to be employed Dimensional tolerances required Casting design Pattern cost Before the final casting design is determined...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.aceg.t68410021
EISBN: 978-1-62708-280-8
... Abstract This chapter provides information on comparative attributes of sand molds and metal molds for aluminum casting. The cooling rates and microstructures obtained with each mold type are discussed. In addition, the chapter explains why sand castings work successfully in certain...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780051
EISBN: 978-1-62708-281-5
... mold design contribute to part design? In subsequent assembly operations, can the properties of the plastic be used further, as in snap fits or spin welding? Part Geometry After the preliminary study, the designer has to define the part geometry. This usually progresses through several...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 1998
DOI: 10.31399/asm.tb.ts5.t65900291
EISBN: 978-1-62708-358-4
... Abstract Mold steels are used for plastic molding and certain die-casting applications and are designated as group P steels in the AISI classification system. The fabrication and performance requirements that differentiate them from other types of tool steels are described in this chapter...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2000
DOI: 10.31399/asm.tb.aet.t68260119
EISBN: 978-1-62708-336-2
... casting process. The direct chill (DC) continuous casting process developed in 1933 by W.T. Ennor is the method used today to cast aluminum extrusion billets. Figure 3 illustrates the principle of the DC casting process. Molten aluminum is poured into a shallow, water-cooled mold normally of a round...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870119
EISBN: 978-1-62708-314-0
.... 5.1 , a dry reinforcement, usually a woven glass cloth, is placed manually on the mold. A low-viscosity liquid resin is then applied to the reinforcement by pouring, brushing, or spraying. Squeegees or rollers are used to densify the lay-up, thoroughly wetting the reinforcement with the resin...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060085
EISBN: 978-1-62708-261-7
... the part that is cast does not undergo hot or cold working operations subsequent to casting. These alloys are cast into a mold cavity and the resulting cast shape, with minor surface finishing, represents the shape of the finished product. Cast materials typically require less labor and fewer...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 1998
DOI: 10.31399/asm.tb.ts5.t65900007
EISBN: 978-1-62708-358-4
... with different compositions and properties. Selection of a single tool steel for a specific operation must be based on two major considerations: (1) predicting the performance of a steel for an application and (2) analyzing the limitations associated with the manufacture of a tool, die, or mold with the selected...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.aacppa.t51140021
EISBN: 978-1-62708-335-5
...: expendable mold gravity-feed casting, nonexpendable (permanent) mold gravity feed casting, and pressure die casting. Next, the chapter describes the technologies used to produce premium engineered castings and when such castings may be relevant. The chapter concludes with descriptions of other process...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1995
DOI: 10.31399/asm.tb.sch6.t68200158
EISBN: 978-1-62708-354-6
... and mold assembly. The six castings were machined and bolted into the final assembly. In the case of ring 2, a comparative study showed that the shrouds, with cast-on welding stubs for the blades, could be produced as a simple casting without cores, while the blades could be cast separately as slabs...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290111
EISBN: 978-1-62708-319-5
... a component. In some approaches, the voids between particles are saturated with binder. In other approaches, a volatile solvent phase is added to reduce viscosity, allowing shaping at low pressures. Many shaping processes require tooling, including a mold cavity. The mold is created to generate the target...