1-20 of 126 Search Results for

green sand media preparation

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
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
... sand media preparation mold finishing shakeout GREEN SAND MOLDING is one of many methods available to the foundryman for making a mold into which molten metal can be poured. Green sand molding and chemically bonded sand molding are considered to be the most basic and widely used moldmaking...
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 type of binder depends on the size and number of cores or molds required, production rates, and equipment. Green (clay-bonded) sand molding and chemically bonded sand molding are considered to be the most basic and widely used moldmaking processes. The molding media for the two methods are prepared...
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
... of each layer or after the entire part is fabricated. The resulting parts usually exhibit sufficient mechanical strength for handling but insufficient for use in many load-bearing applications and therefore are termed “green parts.” In addition, in some variants of BJAM, as-fabricated green parts require...
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
... foam coatings lost foam casting expandable polystyrene lost foam pattern casting quality THE LOST FOAM CASTING PROCESS originated in 1958 when H.F. Shroyer was granted a patent for the cavityless casting method using a polystyrene foam pattern embedded in traditional green sand, 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
... extensive to be discussed in this article. The optimum amount of water that gives the sand its best workability often is called the temper point. During green sand preparation, strength increases rapidly as the amount of added water increases. Molding sand can hold the water in two forms: combined and free...
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
... occurring fireclay (kaolinite), most of the prepared system sands use bentonite (montmorillonites), which are the best bonding clays. These can have either a calcium or a sodium base. Sodium bentonites occur naturally. Green sand produced with this clay has medium green strength and high dry strength...
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
...). For coremaking, the self-setting resin binders are simply referred to as no-bakes. Fig. 2 Cold box (vapor-cured) coremaking process. The wet sand mix, prepared by mixing sand with the two-component liquid resin binder, is blown into the core box. The core box is then situated between an upper gas input...
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
... Tolerances Like bonded sand molds, dimensional tolerances are strongly influenced by the type of mold medium. Lost foam casting with silica sand media yields the dimensional precision similar to that of green sand molding. Dimensional precision of silica sand molds during casting is limited because...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003172
EISBN: 978-1-62708-199-3
... Abstract This article discusses classification of foundry processes based on the molding medium, such as sand molds, ceramic molds, and metallic molds. Sand molds can be briefly classified into two types: bonded sand molds, and unbonded sand molds. Bonded sand molds include green sand molds...
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
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
... as green and dry strength, permeability, and castability. These include cement, ceramic talc, fiberglass, sand, clay, wollastanite, pearlite, and fly ash. Cores are typically made of the same material and by the same process as molds, but cores are sometimes made of other materials, such as shell...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003052
EISBN: 978-1-62708-200-6
... a description of the comminution process (wet and dry milling methods), it discusses batching and mixing operations and granulation methods. The article also deals with the effect of process variables and the steps involved in chemical synthesis, including preparation from solution and gas-phase reactions...
Book Chapter

By Barry Law
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006060
EISBN: 978-1-62708-172-6
... Abstract This article presents a background of green chemistry and green coatings, and a summary of the key concerns of the green coating procurement process. It includes a discussion on green marketing and the seven sins of greenwashing, an overview of the environmental certification standards...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001310
EISBN: 978-1-62708-170-2
..., castings are blasted immediately after shakeout to reveal any major surface defects. After gates, sprues, and risers are sawed off and other operations are performed to prepare the castings for shipment, a final abrasive blast with sand or steel grit is given just before pickling. Under conventional...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005338
EISBN: 978-1-62708-187-0
.../mold reaction. The typical reaction layer is 0 to 0.13 mm (0 to 0.005 in.) thick, but large masses of metal will be prone to greater metal/mold reaction ( Ref 5 ). Sand Systems Sand systems have been identified as having potential use as mold media for zirconium. The first is zircon sand...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006335
EISBN: 978-1-62708-179-5
... passageways of the castings under the vibration of the vibratory machine and literally scrub the surface walls of the internal cavities. The in-and-out movement of the media also carries core wash and sand from the internal passages of the castings, allowing removal of the material and providing a clean...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006014
EISBN: 978-1-62708-172-6
... of aluminum is intended, the natural or anodized oxide layer must be sufficiently prepared to allow for adequate coating adhesion. Typical methods of surface preparation are mechanical abrasion (e.g., abrasive blast cleaning or power sanding), use of wash primers and chemical cleaning, or etching solutions...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006327
EISBN: 978-1-62708-179-5
... it was shown that 3 mm (0.12 in.) thick ductile iron plates can be produced carbide-free in green sand using MgFeSi treatment alloys by using a magnesium residual controlled to 0.035% and strong post-inoculation with 1.25% Fe75Si ( Ref 39 ). Another study ( Ref 40 ) recommended a final composition of 3.7% C...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003175
EISBN: 978-1-62708-199-3
... in the Section “Aluminum and Aluminum Alloys” in this Handbook (see Table 2 in the article “Chemical Compositions and International Designations” ). Aluminum alloys are cast in all casting processes, including green sand, dry sand, composite mold, plaster mold, investment casting, permanent mold, counter...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004108
EISBN: 978-1-62708-184-9
... expensive unless they can be recycled. Silica sand is generally not used because of the possibility of silicosis, its friable nature, and its rounded shape, which is not conducive to high productivity. Safety issues related to surface preparation should be given due consideration including: abrasive dust...