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sodium silicates

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Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003172
EISBN: 978-1-62708-199-3
... molds, 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...
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
... to be noted in handling sand-resin mixtures for no-bake molds or cones and lists some advantages of no-bake air-set cores and molds. The article describes the process procedures, advantages, and disadvantages of gas curing and air-setting hardening of sodium silicates. It examines the members of the air...
Image
Published: 31 August 2017
Fig. 8 Effect of surface condition and nodularity on fatigue properties of CG iron plates (8 mm, or 0.3 in.) cast in sodium silicate sand. AC, as-cast; M, machined. (a) S - N curves for 15% nodularity. (b) S - N curves for 40% nodularity. (c) Effect of nodularity on the skin factor. Source More
Image
Published: 01 December 2004
Fig. 16 Effect of sodium modification on microstructure of sand-cast aluminum-silicon hypoeutectic alloy 356-F. Both specimens were etched in 0.5% hydrofluoric acid and are shown at 100×. (a) As-cast structure in unmodified alloy consists of a network of silicon particles (sharp gray), which More
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003693
EISBN: 978-1-62708-182-5
... are packaged separately. If elevated baking temperatures can be achieved, the curing solution may not be necessary. The earliest postcured zinc-rich coatings were based on a sodium silicate vehicle, and the most popular commercial products available have essentially the same chemistry. There are other...
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
...). Inorganic bonding can also be obtained with thermosetting silicates (warm box, Table 1 ) and self-setting (no-bake) inorganic compounds such as sodium-silicates, aluminates (cement), and phosphates ( Table 1 ). Comparison of mold and binder system characteristics Table 1 Comparison of mold...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006049
EISBN: 978-1-62708-172-6
..., Victor Charles John Nightingall of Victoria, Australia, began to develop a zinc-rich product based on a sodium silicate binder. His developments led to an Australian patent, dated March 20, 1937 ( Ref 3 ), and British patent 505,710 in May 1939. He applied for another patent on September 26, 1940, which...
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
... hardness. In Europe, where calcium bentonite is available only naturally, soda ash also is used to convert it to sodium bentonite ( Ref 1 , 17 ). Special additives, such as iron oxide or fly ash, chemically react with silica sand at high temperatures, forming viscous semiliquid silicates...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003684
EISBN: 978-1-62708-182-5
... the years with growing technology to meet industry needs. The first silicate cements were composed of a sodium silicate (Na 2 SiO 3 ) liquid and a combination of fillers, such as silica flour, clay, silica aggregates, and barytes, and were formulated as chemical-resistant mortars for use in ambient or high...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003066
EISBN: 978-1-62708-200-6
... not scale simply with the atomic mass of the added ion. Although sodium-silicate glasses are significantly more dense than the corresponding lithium-silicate glasses, potassium-silicate glasses have densities that are almost identical to those of the corresponding sodium-silicate glasses. The densities...
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
... Effect of surface condition and nodularity on fatigue properties of CG iron plates (8 mm, or 0.3 in.) cast in sodium silicate sand. AC, as-cast; M, machined. (a) S - N curves for 15% nodularity. (b) S - N curves for 40% nodularity. (c) Effect of nodularity on the skin factor. Source: Ref 12...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001339
EISBN: 978-1-62708-173-3
... Dolomite MgO · CaO · (CO 2 ) 2 Fluorspar, fluorite CaF 2 Cryolite Na 3 AlF 4 Lime CaO Limestone, calcite, marble CaCO 3 Zirconia ZrO 2 Feldspar (a) K 2 O · Al 2 O 3 · 6SiO 2 Clay (a) Al 2 O 3 · 2SiO 2 · 2H 2 O Sodium silicate SiO 2 /Na 2 O (ratio-3.22...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005255
EISBN: 978-1-62708-187-0
... silicate, and sodium silicate. Hybrid binders have also been developed, and alumina or zirconia binders are used for some processes. Colloidal Silica Colloidal silica is the most widely used. It is manufactured by removing sodium ions from sodium silicate by ion exchange. The product consists...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001222
EISBN: 978-1-62708-170-2
... cleaners use a blend of different salts chosen from: Orthophosphates, such as trisodium phosphate Condensed phosphates, such as sodium pyrophosphate and sodium tripolyphosphate Sodium hydroxide Sodium metasilicate Sodium carbonate Sodium borate The corresponding (and more...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001308
EISBN: 978-1-62708-170-2
... or greases, but not mineral oils or greases. Therefore, they can sometimes remove fresh buffing compounds and the lard oils used in spinning operations. Nonetching cleaners can be classified as either silicated or nonsilicated. The silicated cleaners are based on aqueous solutions of sodium carbonate...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006504
EISBN: 978-1-62708-207-5
.... The silicated cleaners are based on aqueous solutions of sodium carbonate, trisodium phosphate, or other alkalis, to which small amounts of sodium silicate are added to inhibit etching. The main disadvantage of the silicated types, aside from their inability to emulsify and remove mineral oils...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005571
EISBN: 978-1-62708-174-0
... sodium silicate and potassium silicate. The second type of binding agent does function as a hydrogen source. The binders used for high-hydrogen electrodes can be organic in nature and include gum arabic, sugar, dextrine, and other specialized synthetic organic binders. Attempts are ongoing to identify...
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
... Ingredient Weight kg lb Washed silica sand (AFS 50 is typical) 20.0 45 White molding plaster 18.6 41 Ceramic talc 3.6 8.0 Portland cement 0.2 0.4 Sodium silicate 0.4 0.8 Western benonite 1.1 2.5 Terra alba 1.5 3.4 Note: Slurry is made by mixing 45 kg (100 lb...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006521
EISBN: 978-1-62708-207-5
...       Sodium silicate 0.75–4.5 0.1–0.6       Alrok Sodium carbonate 20 2.7 90–100 190–212 20 Final treatment for aluminum products Potassium dichromate 5 0.7       More recently, a proprietary product (Chemidize 727 ND, MacDermid Enthone Inc.) forms a thin structured oxide...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003701
EISBN: 978-1-62708-182-5
... the undesirable charge species from water. Cation resins only exchange positively charged ions or cations, whereas anionic resins exchange anions, or negatively charges ions. Softening, the most common ion-exchange process, removes hardness ions by replacing them with sodium ions. For complete removal of all...