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evaporative pattern casting

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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
...Abstract Abstract The Replicast process is developed to overcome the formation of lustrous carbon defects and carbon pickup observed in conventional evaporative pattern casting processes. This article provides a discussion on the pattern production, process capabilities, advantages...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006508
EISBN: 978-1-62708-207-5
...Abstract Abstract Lost foam casting is a sand casting process in which the mold consists of an evaporative polystyrene foam pattern embedded in sand. It is especially well suited for making complex parts with convoluted features such as engine blocks, transmission cases, and cylinder heads...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.9781627082075
EISBN: 978-1-62708-207-5
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005254
EISBN: 978-1-62708-187-0
... as evaporative pattern casting, evaporative foam casting, the lost pattern process, the cavityless expanded polystyrene casting process, expanded polystyrene molding, or the full mold process. The most significant breakthrough in the lost foam process came in 1964 with the issuance of a patent to T.R. Smith...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001061
EISBN: 978-1-62708-162-7
...Factors affecting selection of casting process for aluminum alloys Table 7 Factors affecting selection of casting process for aluminum alloys Factor Casting process Sand casting Permanent mold casting Die casting Cost of equipment Lowest cost if only a few items required Less...
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
..., clay/water-bonded sand, chemically bonded sand, plaster mold, and investment casting. Important variations include 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...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003172
EISBN: 978-1-62708-199-3
... Gypsum bond No bond Magnetic molding Vacuum molding Expendable mold processes/Expendable patterns Foamed patterns Evaporative foam casting Replicast process Wax patterns (investment casting) Ethyl silicate bonded block molds Ethyl silicate bonded ceramic shell...
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
.... The mold is made by placing a flask (an open metal box) over the cope pattern plate. Before molding can begin, risers are added to the pattern at predetermined points to control solidification and supply liquid metal to the casting to compensate for the shrinkage that takes place during cooling...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006556
EISBN: 978-1-62708-290-7
.... Their burnout involves melting, evaporation, and oxidation (combustion). During melting, an appreciable proportion of the pattern can escape the investment as a liquid, which leaves a passageway for air to enter, and this helps to facilitate evaporation and combustion. Investment casting using wax has been...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.9781627081702
EISBN: 978-1-62708-170-2
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
.... Alternatively, the pattern may be expendable, as in the case of lost foam patterns that evaporate during casting. In lost foam casting, the expendable foam pattern can be placed in one flask or container to form the mold. This eliminates the need for cope and drag sections that are required in removing...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003127
EISBN: 978-1-62708-199-3
... the sequence of solidification from one part of the casting to another, providing increased soundness and strength with good dimensional control. Evaporative (Lost-Foam) Pattern Casting (EPC) Evaporative (lost-foam) pattern casting (EPC) is a sand casting process that uses an unbonded sand mold...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003755
EISBN: 978-1-62708-177-1
..., and vacuum system. It discusses the contrasts mechanisms used for imaging and analyzing materials in the SEM. These include the topographic contrast, compositional contrast, and electron channeling pattern and orientation contrast. Special instrumentation and accessory equipment used at elevated pressures...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0001830
EISBN: 978-1-62708-181-8
... – 145 10.2307/3101414 10. de Réaumur R.A.F. , L'Art de Convertir le Fer Forgé en Acier, et L'Art d'Adoucir le Fer Fondu, (The Art of Converting Wrought Iron to Steel and the Art of Softening Cast Iron) , Brunet Michael , 1722; see translation by Sisco A.G. , Réaumur's...
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
... finely reproduced detail. The article describes three generally recognized plaster mold processes, namely, conventional plaster mold casting, the Antioch process, and the foamed plaster process. Ceramic molding techniques are based on processes that employ permanent patterns and fine-grained zircon...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005204
EISBN: 978-1-62708-187-0
... at each of the locations can be scanned to create spot patterns as required by the application. With such systems, the required heating can be achieved without unnecessary power consumption and evaporation of alloying elements. Process observation is accomplished with a video monitoring system...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005354
EISBN: 978-1-62708-187-0
... in patternmaking with wood and, in some cases, plastic (instead of with metal patterns that would be required with the high pressures of high-density green sand molding). Likewise, when very large castings require the use of floor molding, this can be done by nobake as a manual operation with pneumatic tools...
Book Chapter

By Samuel M. Purdy
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003750
EISBN: 978-1-62708-177-1
... for porthole defects as well as defects in forgings, castings, bars, and sheet products. Procedures Sampling The choice of the sample and its orientation to the workpiece are crucial to obtaining good results. In most cases, the problem in hand will point to the location and orientation...
Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001050
EISBN: 978-1-62708-161-0
...: Ref 7 . (e) Larson-Miller stress-rupture curves for selected cobalt-base superalloys. Source: Ref 8 Fig. 7 Evaporation of elements from an 80Ni-20Cr alloy during VIM Fig. 6 Vacuum induction refining process Fig. 10 Influence of casting variables on intermediate...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005244
EISBN: 978-1-62708-187-0
... of sand that are placed in the mold to provide castings with contours, cavities, and passages that are not otherwise practical or physically obtainable by the mold. In general, the principles that apply to sand molding from a pattern also apply to molding a sand core. The core must be freed from the core...