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flaskless molds

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Published: 30 November 2018
Fig. 10 Vertically parted flaskless molding, the Disamatic machine. Source: Ref 8 More
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
... and disadvantages of green sand molding. The article discusses the primary control parameters for the sand system formulation. It describes two basic types of green sand molds: flask molds and flaskless molds. The article provides a discussion on molding problems, including springback and expansion defects...
Image
Published: 01 December 2008
Fig. 14 Automatic pouring into molds on continuously moving line. (a) Pouring into flaskless molds on an indexing line from bottom-pour unit with stopper rod. (b) Synchronized pouring on a continuously moving line with mechanized ladles capable of x -axis and y -axis travel More
Image
Published: 01 December 2008
Fig. 3 Automatic flaskless high-production molding machine More
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006533
EISBN: 978-1-62708-207-5
... ±0.01–4 The aggregate-binder mixture is used to make the molds through a variety of molding processes. The simplest is making horizontally parted two mold halves in flasks. The mold halves are assembled with or without cores to create the final mold. Other developments, including flaskless...
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
... or without flasks (flaskless). Resin-bonded sand mold processes (called cold box, hot box, warm box, and shell molding) were originally based on organic resin binders, although lately even inorganic binders are mixed with the sand and then hardened (or cured) by chemical or thermal reactions to fixate...
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
..., and para-toluene sulfonic acid are stronger acids and are used when faster curing and improved strength are desirable. Excellent hot strength values make flaskless molding possible. Unfortunately, sulfur is environmentally unfriendly because of the emission of toxic gases during the decomposition...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005352
EISBN: 978-1-62708-187-0
... for automatic control of melt level ( Fig. 15 ). Fig. 14 Automatic pouring into molds on continuously moving line. (a) Pouring into flaskless molds on an indexing line from bottom-pour unit with stopper rod. (b) Synchronized pouring on a continuously moving line with mechanized ladles capable of x -axis...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003172
EISBN: 978-1-62708-199-3
.... Fig. 4 Pressure wave molding machine that compacts sand by the rapid release of air pressure or an explosive combustible gas mixture. Part (a) shows the mold filled by gravity prior to being compacted by the pressure wave at (b). Flaskless molding machines are popular, using either horizontal...
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
... or manufactured ceramic) and binder. The aggregate-binder mix surrounds the pattern and is then compacted and bonded or mechanically held together, so that a mold cavity remains intact when the pattern is removed from the flask (or, in the case of a flaskless mold, produced in a chamber that is integral...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005186
EISBN: 978-1-62708-187-0
...—The first Betatron is installed in a U.S. foundry at ESCO Corp., Portland, Ore., for radiography of heavy steel castings. 1957—The vertically parted flaskless green sand molding production machine is invented by Vagn Aage Jeppesen, a 40 year old professor at the Technical University of Denmark. He...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.9781627081993
EISBN: 978-1-62708-199-3