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in-mold filtration

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Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005351
EISBN: 978-1-62708-187-0
... Abstract In the handling of molten aluminum, it is fairly common to use filters as a part of the melting unit and in the gating and/or riser system. This article describes the methods of in-furnace and in-mold filtration, with an emphasis on the filtration of molten aluminum. It discusses...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006535
EISBN: 978-1-62708-207-5
... reduce fuel usage to less than 0.57 kWh/kg of aluminum. Large commercial gas-fired furnaces are reported with efficiencies as high as 56% (0.58 kWh/kg). Smaller-volume melting operations, especially permanent mold foundries, may use electric radiantly heated melting furnaces. Energy efficiencies...
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
... Abstract This article discusses various molten-metal treatments, namely fluxing, degassing, and molten-metal filtration. It focuses on various molten-metal handling systems for transporting, holding, or delivering molten metal to the mold/die system. These include launders, tundishes, holding...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005340
EISBN: 978-1-62708-187-0
... of a 319 aluminum alloy melt was determined using the LAIS technique. Four different melt conditions were evaluated, and for each melt condition several test bars were cast using a permanent mold test bar mold. Figure 6 shows the variation in average percent elongation of a 319 aluminum alloy...
Image
Published: 01 January 1996
Fig. 1 Two stainless steels fabricated by P/M, as demonstrations of the microstructure variations possible by tailoring the powder, compaction, and sintering variables. (a) A high-porosity microstructure useful for filtration, formed by press and sinter. 1000×. (b) A closed-porosity, high More
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006099
EISBN: 978-1-62708-175-7
... is difficult in systems where the dihedral angle is zero and can even require confining the skeleton in a mold. There are numerous binary systems that satisfy the necessary infiltration conditions. General binary metal systems relevant to carbides are given in Table 1 , where a high-melting ceramic can...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006134
EISBN: 978-1-62708-175-7
... Floatation devices Fluidizer plates for fluid beds Friction reduction Material handling/transport Vacuum plates Mold release Gas/liquid contacting Aerators Spargers Bubblers Agitation of liquids Chlorine & oxygen bleaching Enhancing chemical reactions Oxygenation for fish...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002128
EISBN: 978-1-62708-188-7
... in cutting fluids that intentionally or inadvertently contain water. Bacteria, fungi, and/or mold will grow, depending on the growth conditions and the competition for nourishment among these organisms. Sulfate-reducing bacteria produce the well-known “Monday morning stink.” These microbes do not require air...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0009017
EISBN: 978-1-62708-187-0
... of iron) occurs in the mold Filter Area/Choke Area Ratio The size and number of ceramic filters required are determined by the rate of mold filling required and the volume of metal to be filtered. As filtration occurs, individual cells in a filter become blocked, and the rate at which the filter...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006074
EISBN: 978-1-62708-175-7
... shapes and their influence in determining tap density of the filled mold. It provides a discussion on process parameters, such as dwell time, depressurization rate, evaluation of green strength and density, and thermal processing, and illustrates a process flowchart for the production of CIP parts...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005344
EISBN: 978-1-62708-187-0
...: 8×. Blisters found are related to encapsulation of a carbonaceous material, such as a lubricant, during casting. Case Study 6 Figure 11(a) is a macrograph of the fracture surface (of a gravity permanent mold aluminum casting) revealing a dark gray stained area covering approximately 40...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001263
EISBN: 978-1-62708-170-2
... mold cavities, including those for compact discs (CD and video discs) rely on the virtually perfect surface reproduction found with the electroforming process. The average optical disc requires impressions having a mean diameter of about 0.2 μm, which is well within the range of the electroforming...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006303
EISBN: 978-1-62708-179-5
.... The latter system takes up a significant area of the mold and is expensive in terms of metal. The use of a filter is therefore the only option considered in the following details. Velocity Control by Filters Notice that no attempt is being made to use the filters for filtration. Filters...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005303
EISBN: 978-1-62708-187-0
... a few castings are made (die casting is more economical above ∼50,000 units). Virtually all copper alloys can be cast successfully by the centrifugal casting process. Castings of almost every size from less than 100 g to more than 22,000 kg (<0.25 to <50,000 lb) have been made. Permanent mold...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005221
EISBN: 978-1-62708-187-0
... Abstract This article introduces filling and feeding concepts from the general perspective of what constitutes a good casting practice. It briefly reviews the concepts that may help to clarify and quantify objectives for more effective mold-filling designs. The article describes the preprimed...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003053
EISBN: 978-1-62708-200-6
... at the ends of a cylindrical part, extends over a part or whole length of the circumference, and extends inward. Source: Ref 7 Uniform mold filling is perhaps the most crucial powder parameter governing dry pressing. Because of this fact, most dry-press operations require a consistent agglomerated...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005193
EISBN: 978-1-62708-187-0
...: Exogenous: those derived from external causes Indigenous: those that are native, innate, or inherent in the molten metal treatment process Exogenous Inclusions Slag, dross, entrapped mold materials, and refractories are examples of inclusions that would be classified as exogenous. In most cases...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005260
EISBN: 978-1-62708-187-0
... Abstract This article provides information on metals that can be cast in permanent molds. It describes the advantages, disadvantages, applications, and design of permanent castings. Following a discussion on the factors considered in mold design and material selection, the article details...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005287
EISBN: 978-1-62708-187-0
..., shell mold casting, plaster casting, investment casting, permanent mold casting, squeeze casting, semisolid forming, centrifugal casting, and pressure die casting. The article presents several different factors on which the selection of a casting process depends. It discusses gating and risering...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006485
EISBN: 978-1-62708-207-5
..., and particle ingot and powder. It describes the molten metal processing and ingot casting process in terms of open-mold casting and direct chill process. The article examines the continuous processes that provide commercial alternatives to conventional ingot casting. It reviews the postsolidification processes...