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ceramic-mold casting

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Published: 01 December 2008
Fig. 1 A 17-4 PH stainless steel ceramic mold casting, the wall thickness of which was reduced, from the presumed practicable minimum of 0.150 to 0.080 in., without appreciably affecting the soundness of castings produced More
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
... resins; 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...
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
... Abstract This article discusses slurry molding that encompasses two distinct processes: plaster molding and ceramic molding. Plaster mold casting is a specialized casting process used to produce nonferrous castings that have greater dimensional accuracy, smoother surfaces, and more finely...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005256
EISBN: 978-1-62708-187-0
... of the investment casting process in terms of molding but with an expendable pattern made from high-quality expanded polystyrene (EPS) as in lost foam (instead of the lost wax pattern of investment casting). The EPS pattern is coated in ceramic slurry and then fired to produce the ceramic mold. The firing process...
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 the Replicast casting process that involves 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 expendable pattern methods...
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
... of the ceramic filters. fluid flow physical properties gating system Bernoulli's theorem law of continuity effect of momentum casting appearance ceramic filters gating design A GATING SYSTEM is the conduit network through which liquid metal enters a mold and flows to fill the mold cavity...
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
... is critical to the accuracy of the final casting. A number of dimensional changes occur during the investment casting process. When wax is injected into the mold, it contracts upon solidification. When the ceramic shell or solid molds are heated for dewaxing and firing, expansion of the cavity occurs. Finally...
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
... and cluster formulation pattern removal methods drying wax IN INVESTMENT CASTING, a ceramic slurry is applied around a disposable pattern, usually wax, and allowed to harden to form a disposable casting mold. The term disposable means that the pattern is destroyed during its removal from the mold...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006297
EISBN: 978-1-62708-179-5
... Abstract Aggregate molding, or sand casting, is the gravity pouring of liquid metal into a mold that is made of a mixture molded against a permanent pattern. This article summarizes the most important materials in the process of sand casting of cast iron, including different types of molding...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003053
EISBN: 978-1-62708-200-6
... insoluble mandrels attached to a mold. One example is fugitive wax slip casting, which is based on the much older technology of investment casting ( Ref 22 , 28 ). Functionally gradient ceramics, which contain a continuously varying property, have also been prepared using sequential sip casting...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003172
EISBN: 978-1-62708-199-3
... that use ceramic molds include investment casting, and plaster casting. Metallic molds are used in permanent mold casting, die casting, semisolid casting, and centrifugal casting. centrifugal casting ceramic molds CO2 process cold box process die casting hot box process investment casting lost...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002481
EISBN: 978-1-62708-194-8
... permanent patterns and those using expendable patterns. Sand Casting Sand casting is used as a generic term for all processes in which an expendable mold is formed of a granular ceramic (ranging from natural sand to synthetic ceramics) by consolidation around a permanent pattern (wood, metal...
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
... Abstract This article discusses the categories and subcategories of shape casting processes. These include single-use processes such as sand, plaster, ceramic, and graphite molding; essentially unpressurized multiuse processes, such as permanent mold; and high-pressure metal mold methods...
Image
Published: 31 August 2017
Fig. 12 (a) Tensile and yield strength and (b) elongation as a function of the cooling rate. ●, ○: experimental points for silica molding sand (SMS) mold; ▪, □: experimental points for insulation sand (low-density alumina-silicate ceramic [LDASC] mold). (c) Stress-strain curves of the castings More
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005351
EISBN: 978-1-62708-187-0
.... molten aluminum flotation inclusions sedimentation in-furnace filtration in-mold filtration positive filtration bonded-particle filters cartridge filters ceramic foam filters filtered metal quality molten metal filtration FILTRATION has become a primary means of removing solid impurities...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005257
EISBN: 978-1-62708-187-0
... and properly designed. Mold Heating and Coating Techniques The centrifugal casting mold must be heated and coated with ceramic mold wash, mold powder, sand, resin sand, or graphite. The most widely used mold coating is water-based mold wash, which is consistently replacing the other coating materials...
Image
Published: 01 December 2008
Corporation. (c) Aircraft fuel sensor strut cast in 17-4-PH stainless steel. Both ceramic and soluble cores were used to produce the complex internal passages. Courtesy of Northern Precision Casting Company. (d) Aircraft combustion chamber floatwall. The large number of small posts required high mold More
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005745
EISBN: 978-1-62708-171-9
... offer significant benefits to cast metal products by serving as thermal barriers. Thermal barrier coatings (TBCs) can control the flow of heat within a permanent mold and retard rapid chilling, which gives rise to defective microstructures. Also, with TBCs, initial casting runs to preheat the mold...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002490
EISBN: 978-1-62708-194-8
... pores a larger liquid reservoir. Slip casting most commonly uses a low viscosity, clay-based ceramic slurry, but can also be used for nonclay ceramics with suitable additives for rheological control. Water is the common liquid vehicle. A layer of the slurry deposits on the mold surface as water is drawn...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006330
EISBN: 978-1-62708-179-5
... solidification induces a complex volumetric change. As the casting is created by pouring liquid iron into a mold, the solidifying cast iron interacts with the mold aggregate, which undergoes a volume change due to the thermal interchange between the casting and mold. This interaction makes it even more complex...