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ceramic shell molds

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Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005255
EISBN: 978-1-62708-187-0
... materials. It presents recommendations that which serve as a useful guide to the design of investment castings. The article tabulates the applications of the process and illustrates the Shellvest system for investment casting of small parts. It explains the manufacturing process of ceramic shell molds and...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006519
EISBN: 978-1-62708-207-5
... plastics, for investment casting. It describes the mold refractories, binders, slurry formulation, slurry preparation, cluster preparation, and coating and drying for the manufacture of ceramic shell molds. The article reviews postcasting operations, including knockout, cutoff, core removal, heat treatment...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005253
EISBN: 978-1-62708-187-0
... foam and investment casting. It discusses Replicast casting process involving patternmaking with polystyrene and a ceramic shell mold. The article contains a table that summarizes the differences in the steps of casting a part between the permanent pattern and the expendable pattern methods...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005252
EISBN: 978-1-62708-187-0
... Abstract Shell molding is used for making production quantities of castings that range in weight from a few ounces to approximately 180 kg (400 lb), in both ferrous and nonferrous metals. This article lists the limitations or disadvantages of shell mold casting. It describes the two methods for...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005242
EISBN: 978-1-62708-187-0
... molds, namely, ceramic shells and rammed graphite, for casting reactive metals such as titanium or zirconium. ceramic shells coremaking green sand operations titanium zirconium clay resin-bonded sand systems no-bake binder systems heat-cured binder systems cold box binder systems rammed...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005241
EISBN: 978-1-62708-187-0
...; shell molding of sand with a thin resin-bonded shell; no-bond vacuum molding of sand; plaster-mold casting; ceramic-mold casting; rammed graphite molding; and magnetic (no-bond) molding of ferrous shot. The article tabulates a general comparison of casting methods and discusses the basic requirements of...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003172
EISBN: 978-1-62708-199-3
... processes/Expendable patterns Foamed patterns Evaporative foam casting Replicast process Wax patterns (investment casting) Ethyl silicate bonded block molds Ethyl silicate bonded ceramic shell molds Colloidal silica bond Plaster bond Counter-gravity low-pressure casting...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006578
EISBN: 978-1-62708-290-7
... techniques, such as injection molding, die pressing, tape casting, throwing, and so on, it is difficult to satisfy the processing demand of ceramic parts with complex geometric design due to the limited fabrication capability ( Ref 2 ). For example, bioceramic-based scaffold is customized based on the shape...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003052
EISBN: 978-1-62708-200-6
... forming process, such as dry pressing or injection molding, can involve significant wet forming during slurry production prior to granulation and final-shape forming. Table 5 Viscoelastic properties required by various ceramic-forming processes Process Degree of saturation y = V...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005249
EISBN: 978-1-62708-187-0
... permanent patterns and fine-grained zircon and calcined, high-alumina mullite slurries for molding. Except for distribution of grain size, the zircon slurries are comparable in composition to those used in ceramic shell investment molding. Like investment molds, ceramic molds are expendable. However, unlike...
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
... capabilities of the metal (magnesium alloy AZ63A) or the process (shell molding) that was used in producing it. Rejection rate was less than 5% Castings produced in metal molds have an advantage, in one respect, over those produced in sand or ceramic molds. Water lines can be incorporated in the mold to...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002463
EISBN: 978-1-62708-194-8
... Abstract This article provides a discussion on various types of glasses, such as traditional glasses, specialty glasses, and glass ceramics. It provides information on glazes and enamels, and reviews the various broad classes of ceramic materials. The broad classes include whitewares...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005287
EISBN: 978-1-62708-187-0
..., shell mold casting, plaster casting, investment casting, permanent mold casting, squeeze casting, semisolid forming, centrifugal casting, and pressure die casting. The article presents several different factors on which the selection of a casting process depends. It discusses gating and risering...
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
... are shell molding and no-bake molding. The shell and no-bake methods are discussed in subsequent articles in this Volume. The base aggregates and types of binders are discussed in the article “Aggregates and Binders for Expendable Molds” in this Volume. Some advantages of green sand molding...
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
... metal. More complex cores are made of sand, plaster, ceramics, or even salt. When nonmetal destructible cores are used, the process is called semipermanent mold casting. Basically, the process involves the following steps: A refractory wash or coating is applied to the surfaces of the preheated...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006563
EISBN: 978-1-62708-290-7
... melting mechanism occurs when the input energy can only melt the shell of the ceramic particles, and the molten material serves as a binder between non-molten grains. Due to the low density and weak binding strength of parts formed by partial melting, the potential for their application is limited. Full...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005187
EISBN: 978-1-62708-187-0
... …   CO 2 sand All 2 Yes Unlimited …   Cold box All 2 Yes Unlimited …   Hot box All 2 Yes Unlimited …   Shell All 3 Yes Small to medium …  Slurry processes   Plaster Nonferrous 1 Yes Unlimited Outstanding   Ceramic All 1 Yes Unlimited Outstanding...
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
... spacing Casting process °C/s °F/s Range of dendrite arm spacing (DAS) μm in Green sand, shell 0.1–0.5 0.18–0.9 30–120 (a) 0.001–0.005 Permanent mold 0.3–1 0.54–1.8 20–70 (b) 0.0008–0.003 Die (high-pressure) 50–500 90–900 5–15 0.002–0.0006 (a) DAS in sand...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006313
EISBN: 978-1-62708-179-5
... ceramic of the molding aggregate or with the gases between the sand grains. If the iron in the metal is not oxidized, the interaction is considered mild and its consequence is subsurface damage ( Fig. 4a , b , Ref 2 ). Fig. 4 Severity and consequences of chemical mold-metal interaction. (a) Mild...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003413
EISBN: 978-1-62708-195-5
... shell mold with cast aluminum egg-crate stiffener. Courtesy of Ford Motor Company Monolithic metal tools are the only realistic option for high-volume work (greater than 40,000 parts). Aluminum is commonly used at the lower end of this range, where its machinability and low density provide some...