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furan binders

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Published: 31 August 2017
Fig. 2 (a) and (b) Tested furan binder/silica sand molds. Temperature evolution for the tested molds (A356 castings) at superheats of (c) 100 °C (212 °F) and (d) 200 °C (390 °F). Reprinted with permission from John Wiley & Sons, Inc., who reserves all rights. Source: Ref 11 More
Image
Published: 31 August 2017
Fig. 3 Furan binder pyrolysis determined by thermogravimetric analysis for two samples taken at two different times. Source: Ref 10 More
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006298
EISBN: 978-1-62708-179-5
... Abstract Modeling of gas evolution during sand mold castings is one of the most important technical and environmental issues facing the metal casting industry. This article focuses on describing the capability of numerically predicting gas evolution for the furan binder/silica sand 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
... binders, namely, furan no-bake resins, phenolic no-bake resins, and urethanes. The article provides an overview of gas-cured organic binders. It also illustrates the three commercial systems for sand reclamation: wet reclamation systems, dry reclamation systems, and thermal reclamation. inorganic...
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
... with binders based on acid-cured resins of furan or resoles (phenolic), alkaline phenolic (phenolic ester), acrylic epoxies, and phenolic urethane, which is probably the most significant in North America Thermally cured organic binders such as alkyd oil (also known as alkyd urethane or oil sand...
Image
Published: 31 August 2017
Fig. 11 Influence of the type of binder and coatings on the casting surface. (a) Effect of binder. Source: Ref 10 . (b) Effect of coating on furan sand. Source: Ref 4 More
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
.... No-bake molds usually are not 100% cured even at the stage of casting. Self-setting systems can be used with different types of organic resins and inorganic binders, as described subsequently ( Ref 11 , 23 ). Furan No-Bake Systems Furan no-bake systems were first introduced to automotive foundries...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003172
EISBN: 978-1-62708-199-3
... Chromite sand Zircon sand Heat-cured resin binder processes Shell process (Croning process) Furan hot box Phenolic hot box Warm box (furfuryl/catalyst) Oven bake (core oil) Cold box resin binder processes Phenolic urethane Furan/SO 2 Free radical cure (acrylic/epoxy...
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
... were developed using furan binders. Phenol is sometimes substituted for all or part of the furfuryl alcohol in some formulations. This has made available several binder systems for the hot box process, among which are the furan hot box system (furfuryl alcohol, urea-formaldehyde), the phenol hot box...
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
... for use with acid-catalyzed binders such as furan resins; it tends to accelerate the curing of phenolic urethane binders. Being a crushed rock, it is highly angular and consequently requires high binder additions. Thermal expansion is uniform over the temperature range and is quite low compared to silica...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006571
EISBN: 978-1-62708-290-7
.... The selection of binder systems for sand printing is straightforward, taking advantage of the fact that foundries use various inorganic and organic binders, such as furan, phenolic, and silicate, which can be readily formulated in liquid form. However, the effectiveness of these traditional binder systems...
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
... the skin thickness of an iron of eutectic composition at all cooling rates ( Fig. 11b ), although it does not improve roughness. Fig. 11 Influence of the type of binder and coatings on the casting surface. (a) Effect of binder. Source: Ref 10 . (b) Effect of coating on furan sand. Source: Ref 4...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006569
EISBN: 978-1-62708-290-7
.... Typically, curing is done overnight. For other binder systems such as the two-part furan system used in sand printing for castings, no post-curing is necessary as the part cures during the print itself. The most involved portion of the binder-jet cycle is depowdering, which comes after the curing step...
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 process, known today as lost-foam casting (using loose, unbonded sand), is patented a short time later. Phenolic and furan acid-catalyzed no-bake binder systems are introduced. Ductile iron desulfurization via shaking ladles is developed in Sweden. 1959—General Electric uses the transient heat-transfer...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005735
EISBN: 978-1-62708-171-9
... systems have been used, including carnauba wax, epoxies, polyesters, furans, anaerobics (which harden in the absence of air), sodium or potassium silicates, phosphates, and even sugar (heated to turn it into carbon). The nature of coating morphology assures a very high length-to-diameter ratio...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.9781627082907
EISBN: 978-1-62708-290-7
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003052
EISBN: 978-1-62708-200-6
... products; materials carbonize on firing in reducing atmosphere; pitches also used to impregnate slide-gate refractories Byproduct of coke plants and petrochemical refineries Phenol formaldehyde resins, and furane resins … Bonding systems for magnesia graphite, alumina graphite, and zirconia graphite...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005334
EISBN: 978-1-62708-187-0
... binder materials used in the modern chemically bonded sands. Automated sand-mixing equipment, with delivery of the sand mix to the point of use, is commonly employed. Molding Sands It is essential to carry out various sand control tests, as described elsewhere, to maintain a consistent sand mix...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004204
EISBN: 978-1-62708-184-9
... Graphite Impervious graphite is made of raw graphite impregnated under pressure with phenolic, furan, or fluorocarbon resins. The resulting nonporous graphite is impermeable to gases and liquids and is highly corrosion resistant in acids and many solvents. Impervious graphite is dimensionally stable...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004184
EISBN: 978-1-62708-184-9