1-20 of 245 Search Results for

silica sand system

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
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: 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
... and starches rather than seacoal (to prevent carbon pickup). Nonferrous sands usually use cellulose and starches. If low-expansion sands such as chromite, zircon, olivine, or ceramic aggregates are used, carbons are sometimes not necessary. Some nonferrous silica sand systems operate with no carbons...
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
... with acid demand greater than 10 to 15 mL are not suitable for acid-catalyzed binder systems. Aggregates Silica is an oxide of metal silicon (SiO 2 ), which is usually derived from mineral quartz and is the most common sand aggregate used in foundries. Silica is universally available and is easily...
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
... in both the internal and external areas of the foam pattern system. Sand System When sand is not reclaimed, the sand most commonly used for economic reasons is silica sand, subangular to round. However, a round synthetic mullite sand can fill a flask containing complex foam patterns 35% faster than...
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...
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
... of the flasks and castings is more readily automated with the lost foam process because locations are predictable. One-piece flasks are readily moved. The use of untreated, unbonded sand also makes the sand system economical and easy to manage. There is less maintenance on sand-handling equipment. Less sand...
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
Image
Published: 31 December 2017
Fig. 8 Comparison of slurry wear for flow-through and recycled-slurry systems using a low-alloy steel in a 2% silica sand slurry. Source: Ref 37 More
Image
Published: 01 January 2002
Fig. 4 Comparison of slurry wear for the flow-through and recycled slurry systems using a low-alloy steel in a 2% silica sand slurry. Source: Ref 13 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
... the reproducibility of the sand mixture. It often contains serpentine; in this case, the sand must be calcined to eliminate the water ( Ref 1 ). Due to the high acid demand, it is not suitable for acid-cured systems but is extensively used for green sand applications. The specific heat of olivine is close to silica...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003172
EISBN: 978-1-62708-199-3
... employed molding and casting processes. Classification system for foundry processes based on mold type Table 1 Classification system for foundry processes based on mold type Expendable mold processes/Permanent patterns Clay/water bonds (green sand molding) Silica sand Olivine sand...
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
... lower expansion than silica. All of these aggregates are generally more expensive than silica, but they reduce expansion, burn-in/burn-on, and dimensional-related casting defects. The sand in a green sand molding system is primarily made up of recycled, reclaimed, and reused sand. Sand for the green...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001225
EISBN: 978-1-62708-170-2
... the casting as the silica is removed from the shell or core. Sand Castings Sand castings are cleaned using a method similar to that used to clean investment castings. Again, the principal reaction is between silica (sand) and the alkalis present in the molten salt. When cleaning cast iron, however...
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
... silicate-carbon dioxide systems, and phosphate-bonded molds. Organically bonded systems include no-bake binders, heat-cured binders, and cold box binders. However, some molding processes do not use binders. Instead, the sand or mold aggregates are held together during pouring by the pattern itself...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001228
EISBN: 978-1-62708-170-2
... section. All types of abrasive may be handled with the pressure blast system in a variety of environments. In exceptional cases, air pressure blasting is performed in an open field with sand as the abrasive. Protective clothing and a helmet with air supply are the only health precautions taken. Quite...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003170
EISBN: 978-1-62708-199-3
... is usually made of a material with a higher melting point than that of the alloy, such as a refractory aggregate (e.g., silica sand) or a high-temperature alloy. There are a wide variety of mold-making methods used in casting, depending on the alloy to be poured, the number of castings to be made...
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
... and molding, but they are perhaps more widely used for coremaking than molding. Thus, the term cold box often is used to refer to vapor-cured no-bake systems. The no-bake methods also include self setting with liquid catalysts (see the preceding article, “No-Bake Sand Molding,” in this Volume...
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
... of Shell Sands The most common base aggregate for shell sand is silica sand. Sieve analyses and other characteristics of typical sands used for shell molding are given in Table 1 . The silica and zircon contents of these sands are high, which suggests that the sands are generally low in organic...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005355
EISBN: 978-1-62708-187-0
... solidification and cooling of castings in sand molds, the casting must be removed from the sand mold. In the case of green sand or resin-bonded sand molds, a considerable amount of energy is required to remove castings and break up lumps of sand still strongly bonded together. In contrast, unbonded sand systems...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006563
EISBN: 978-1-62708-290-7
.... ( Ref 55 ) investigated direct laser sintering of silica sand for the casting industry. The build process using a CO 2 laser is shown in Fig. 2 . Fig. 2 Flowchart of casting process using direct CO 2 laser sintering of silica sand to build the mold. Source: Ref 16 The surface...