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gravity pouring

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.aceg.t68410151
EISBN: 978-1-62708-280-8
... the mold and gravity to feed the solidification shrinkage. The steel mold is used cycle after cycle for nearly 80,000 to 100,000 pours; recoating of the refractory coating occurs after a few hundred to a thousand pours. Although the process is termed “permanent mold,” molds have a finite life. Molds...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.aacppa.t51140021
EISBN: 978-1-62708-335-5
... mold processes. There is a commonality in practices and terminologies for gravity casting in both expendable and nonexpendable molds. Molten metal is normally introduced to the mold cavity in an arrangement referred to as the gating system ( Fig. 3.1 , 3.2 ). It consists of a pouring basin leading...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.aceg.t68410029
EISBN: 978-1-62708-280-8
.... A cluster of two or three tippers can run multiple jobs. One or two operators can operate a cell depending on the complexity and the coring. Gravity mold pouring cells are created for high-volume production, combining all these features for high-quality metal handing and pouring. Figure 4.15...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240095
EISBN: 978-1-62708-251-8
..., gravity, micro, and inverse. The chapter also provides information on grain refinement and secondary dendrite arm spacing and porosity and shrinkage in castings. It concludes with a brief overview of six of the most important casting processes in industries: sand casting, plaster mold casting, evaporative...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.aacppa.9781627083355
EISBN: 978-1-62708-335-5
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2016
DOI: 10.31399/asm.tb.ascaam.t59190089
EISBN: 978-1-62708-296-9
... the as-cast state observed in the gravity castings, poured into two kinds of mold: sand and metal ( Fig. 3.1 ). Fig. 3.1 Schema of the examined cast part, showing cutting points of the metallography specimens Characteristics of the solidification rate and primary structure are presented...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230253
EISBN: 978-1-62708-298-3
.... , and Flemings M.C. , 1970 . Interdendritic Fluid Flow and Macrosegregation; Influence of Gravity , Met. Trans. , Vol 1 ( No. 5 ), p 1209 – 1220 10.1007/BF02900233 Meyer G.E. , 1966 . “ Bi-Monthly Progress Report on Development of Solution Strengthened High Purity Beryllium Alloy Sheet...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740047
EISBN: 978-1-62708-308-9
... casting defects induction melting solidification IN METAL CASTING, a metal or an alloy is melted, poured into a mold, and allowed to solidify. It is one of the oldest manufacturing methods known to humankind, and one of the most versatile. Today’s foundries make use of statistical process control...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280041
EISBN: 978-1-62708-267-9
... chemistry is obtained, the charge in the arc furnace is poured from the front of the furnace into a transfer ladle. The transfer ladle is brought to the second piece of equipment involved in this process, the AOD vessel. The molten charge is transferred to the AOD vessel. The AOD vessel has no independent...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.aceg.t68410009
EISBN: 978-1-62708-280-8
... important, especially for gravity permanent and low-pressure permanent mold casting processes. The analysis is done in conjunction with a targeted casting process that involves suitable pouring temperatures and assumed cycle times, including the mold or die closing times, solidification duration, and mold...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420429
EISBN: 978-1-62708-310-2
... dendrite arm spacing, and the factors that contribute to porosity and shrinkage. dendrite metal shrinkage porosity segregation solidification structures ALMOST ALL METALS AND ALLOYS are produced from liquids by solidification. Sometimes, the liquid metal is poured in a mold with a shape...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290111
EISBN: 978-1-62708-319-5
... binder, >130 °C (265 °F) <40 MPa (6 ksi) Slip casting Slurry poured into porous mold Yes Room temperature Usually none Slurry casting Hot feedstock poured into solid mold No Heated to melt binder, >60 °C (140 °F) No Tape casting Slurry formed into sheet Yes Room temperature...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.aceg.t68410103
EISBN: 978-1-62708-280-8
..., and they need to be sturdy to prevent buckling. Ejector pads enable the design of slightly larger-diameter ejector pins. These are illustrated in Figures 6.8 and 6.9 . Fig. 6.8 Bump ejection schematic Fig. 6.9 Ejector pads Compared to gates used in gravity permanent molding, low...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300391
EISBN: 978-1-62708-323-2
... or rolling surfaces.” Professor Dowson and many others credit the Egyptians for the first documentation of the use of liquid lubrication. Archeologists discovered a tomb drawing depicting the construction of the pyramids, and it very clearly shows a worker pouring a liquid from a jar in front of a sledge...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060085
EISBN: 978-1-62708-261-7
... by continuous casting, although ingot casting is still the preferred method for certain specialty, tool, forging, and remelted steel grades. In foundry casting, metals parts are cast by pouring molten metal into a mold with complex cavities to make component shapes (hence the term, shape casting ). Molds...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.aacppa.t51140007
EISBN: 978-1-62708-335-5
... of a composition for solidification in a specific process to produce defect-free, sound castings. For gravity casting, the components of castability are generally considered to be fluidity as the measure of mold-filling capability, resistance to hot cracking during and after solidification, and feeding...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550457
EISBN: 978-1-62708-307-2
... for extrusion dies, where extremely high strength and wear resistance are necessary at elevated temperatures, such as extrusion of discontinuous MMCs. Virtually every casting method that can be used with unreinforced aluminum has been used with aluminum MMCs. These include the sand, gravity die (permanent...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170021
EISBN: 978-1-62708-297-6
... charge. If the ladle that receives the molten metal at the spout will pour the castings without a transfer, the alloying metal may be added to the stream at the spout. This practice generally provides reasonably thorough mixing, although the exact amount of iron tapped into the receiving ladle...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.aceg.t68410215
EISBN: 978-1-62708-280-8
... cores, because it is less expensive and reduces the tool build time. The importance of mold coating and its influence on solidification is addressed in Chapter 7, “Engineering of Gravity Permanent Mold Castings,” in this book. Similarly, the mold coating types and thicknesses play a vital role...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170432
EISBN: 978-1-62708-297-6
... alloying influences corrosion behavior, physical properties, weldability, and machinability. The number of alloys that can be successfully cast by die casting is much more restricted than gravity-casting alloys. The current commercial magnesium die...