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shell mold casting

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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 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: 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...
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
.... This article discusses the design problems and solutions of various castings, such as sand, shell mold, permanent mold, and investment castings, with illustrations. castings investment castings permanent mold castings sand castings premature freezing molten metal shell mold castings IN...
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...
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...
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
... beads, calcined rice hulls, or nut shells. It is important that the blasting not be overly aggressive so as not to distort mold details or lter dimensions. Dry ice blasting, although suitable for touchup or light removal of damaged coatings while in service, is not aggressive enough for full recoat. The...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005265
EISBN: 978-1-62708-187-0
..., countergravity pressure vacuum process, supported shell technique, loose sand vacuum process, and countergravity centrifugal casting process. countergravity centrifugal casting low-pressure countergravity casting mold filling countergravity low-pressure vacuum process vacuum process THE METHOD of...
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.a0005257
EISBN: 978-1-62708-187-0
... the preferred method for Babbitting medium- and thick-wall, half-shell or full-round (nonsplit) journal bearings, because it virtually eliminates porosity and allows close control of the cooling process to promote a strong bond. A disadvantage is the need for more extensive equipment and tooling than...
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: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006313
EISBN: 978-1-62708-179-5
... content in gray iron ( Ref 19 ). Small amounts of residual elements added to the ladle, such as 0.03% Sn, 0.02% Sb, and 0.15% Cu, virtually eliminated the ferritic layer in gray iron castings for green sand and shell mold casting. The addition of nitrogen-containing materials (0.013% N) to the ladle also...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006524
EISBN: 978-1-62708-207-5
... molding and pattern distinctions such as lost foam (evaporative pattern), shell and V-mold, and process derivatives such as squeeze casting, low-pressure permanent mold, vacuum riserless casting, and semisolid forming based on rheocasting/thixocasting principles. Of these casting methods, high-pressure...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005299
EISBN: 978-1-62708-187-0
... production closely split among green sand, chemically bonded sand, and permanent mold processes: Green sand molding, approximately 32% of cast steel tonnage Chemically bonded sand molding (principally shell molding and no-bake), approximately 30% of cast steel tonnage Permanent molding (32...
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
... blowers (see the subsection “ Core Blowing ” in the section “ Nonpermanent Mold Processes ” in this article) with gas or electrically heated core boxes are prevalent in high production. For medium and low production, heated pattern (shell molding) solutions or electric heating can be used. Compared to...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005296
EISBN: 978-1-62708-187-0
.... The initial liquid steel freezes onto a suitable attachment of the dummy bar so that the cast strand can be withdrawn down through the machine. Solidification of a shell begins immediately at the surface of the copper mold. The length of the mold and the casting speed are such that the shell thickness...
Book: 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
... made from inorganic compounds such as silicates or organic resins Shell molding of sand with a thin resin-bonded shell that is baked No-bond vacuum molding of sand, where molding media is held together with a vacuum source Plaster-mold casting Ceramic-mold casting Rammed graphite molding...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005258
EISBN: 978-1-62708-187-0
... machine Molds consist of four parts: the shell, the casting spout, roller tracks, and end plates. The mold assembly is placed on interchangeable carrying rollers that enable the use of different mold diameters and fine adjustments. Molds are cooled by a water spray, which can be divided into...
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
... Permissible weight of casting Up to approx. 900 kg (1 ton) 45 kg (100 lb) 40 kg (85 lb) Shell: g(oz)–115 kg (250 lb) g(oz)–45 kg (100 lb) CO 2 0.22 kg ( 1 2 lb)–Mg (tons) Thinnest section castable, mm (in.) 2.5( 1 10 ) 3.0( 1 8 ) 0.8( 1 32 ) 2.5( 1...