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vacuum molding

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Image
Published: 01 November 1995
Fig. 3 Vacuum bag molding techniques. (a) Wipe-out process for wet lay-ups. (b) Seal-off method for prepreg lay-ups More
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005251
EISBN: 978-1-62708-187-0
... Abstract This article describes the process and advantages of no-bond methods of vacuum molding and magnetic molding, with schematic illustrations. It also discusses the characteristics of plastic film and dimensional specifications of vacuum molding. magnetic molding vacuum molding...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003172
EISBN: 978-1-62708-199-3
..., dry sand molds, resin-bonded sand molds, and sodium silicate bonded sand. The article describes the casting processes that use these molds, including the no-bake process, cold box process, hot box process, the CO2 process, lost foam casting process and vacuum molding process. The casting processes...
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...
Image
Published: 01 December 2008
Fig. 3 Fluidity tests. (a) Vacuum fluidity test. (b) Fluidity spiral in sand mold. (c) Multichannel fluidity test in metal mold More
Image
Published: 01 December 2008
Fig. 5 Typical setup for vacuum-assist pouring of a conventional plaster mold casting. (a) Side view of conventional plaster mold positioned between upper and lower plates for pouring with vacuum assist. (b) Details of a top plate (A) seen from the bottom showing vacuum channels More
Image
Published: 01 December 2008
Fig. 2 Cope-and-drag assembly of vacuum-bonded sand mold. The sand in the elevated cope mold is under vacuum and is held in place by the atmospheric pressure against the sand. Courtesy of Auburn University More
Image
Published: 01 December 2008
Fig. 6 Schematic showing the loose sand vacuum process. (a) Several molds, produced using any of the bonded sand technologies, are placed atop a sheet of aluminum foil and protrude slightly below an open bottom tube, with the mold fill runners facing downward. (b) The region between More
Image
Published: 01 November 1995
Fig. 1 Basic female mold thermoforming (straight vacuum forming). (a) Heated plastic sheet clamped over female mold cavity. (b) Vacuum pulls plastic sheet into mold, bringing it into contact with entire mold surface. Source: Ref 1 More
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
... Unlimited Outstanding  Rammed graphite Reactive 1 Yes Unlimited …  Nonbonded sand processes   Vacuum molding Aluminum 1 NA Unlimited …   Magnetic molding Ferrous 1 NA Unlimited … Expendable mold with expendable patterns  Lost foam Aluminum 3 NA Medium to large...
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
... vacuum process, countergravity low-pressure inert atmosphere process, 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...
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
... that use hard tooling and positive (superatmospheric) pressures to produce structures. The techniques include vacuum-assisted resin injection, vacuum infusion, resin-film infusion, and injection-compression molding. The article provides an overview of the materials that are commonly used together with some...
Image
Published: 01 December 2008
Fig. 3 Schematic showing, steps of the countergravity low-pressure inert atmosphere process. (a) Metal is melted in a vacuum or inert atmosphere, the chamber is filled with argon at +102 kPa (+1 atmt), and a hot mold is introduced into an independent mold chamber. (b) The mold chamber More
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003414
EISBN: 978-1-62708-195-5
... Abstract Vacuum infusion is a resin injection technique derived from resin transfer molding. This article discusses the characteristics of the technique and its applications. It presents the theory and background of the technique and provides an illustration of how parts are made. The article...