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rammed graphite molding

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Published: 01 December 2008
Fig. 2 Wood pattern to produce a rammed graphite mold. Source. Ref 2 More
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005241
EISBN: 978-1-62708-187-0
... resins; shell molding of sand with a thin resin-bonded shell; no-bond vacuum molding of sand; plaster-mold casting; ceramic-mold casting; rammed graphite molding; and magnetic (no-bond) molding of ferrous shot. The article tabulates a general comparison of casting methods and discusses the basic...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005337
EISBN: 978-1-62708-187-0
.... It discusses the types of molding methods, such as rammed graphite molding and lost-wax investment molding. The article provides information on the casting design, melting, postcasting, and pouring practices. It describes the microstructure and mechanical properties of Ti-6AI-4V alloy. The article examines...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001082
EISBN: 978-1-62708-162-7
.... It discusses the various types of molding methods, namely, rammed graphite molding, and lost-wax investment molding. The article provides information on the casting design, melting, and pouring practices, and describes the microstructure, hot isostatic pressing, heat treatment, and mechanical properties of Ti...
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
... covers primarily the rammed graphite process because it is the most widely used process for zirconium cast parts. Processes discussed include mold preparation, melting techniques, static and centrifugal casting, final evaluation, and testing processes, in addition to information on the mechanical...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005306
EISBN: 978-1-62708-187-0
... <xref rid="a0005306-ref3" ref-type="bibr">(Ref 3)</xref> Titanium castings have been cast in machined graphite molds, rammed-graphite molds, and proprietary investments used for precision investment casting. The principal technology that allowed the proliferation of titanium castings in the aerospace market was the investment casting...
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 the phenolic (novolac) of the shell process (see the article “Shell Molding and Shell Coremaking” in this Volume). Rammed graphite for casting highly reactive metals such as titanium or zirconium Of these, the three most important sand molding methods are shell molding, no-bake molding (phenolic...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003175
EISBN: 978-1-62708-199-3
... vacuum arc remelting (skull melting) or a vacuum induction melting technique in which a magnetic field is arranged to partially levitate the melt and keep it from touching the sides of the metal crucible. Rammed Graphite Molding Large heavy-section titanium castings can be made in rammed graphite...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005187
EISBN: 978-1-62708-187-0
... Unlimited Outstanding  Rammed graphite Reactive 1 Yes Unlimited …  Nonbonded sand processes   Vacuum molding Aluminum 1 NA Unlimited …   Magnetic molding Ferrous 1 NA Unlimited … Expendable mold with expendable patterns  Lost foam Aluminum 3 NA Medium to large...
Book Chapter

Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006338
EISBN: 978-1-62708-179-5
... contract during freezing. In gray iron, however, expansion occurs during the formation of the austenite-graphite eutectic. This expansion increases if the iron is highly nucleated, a state that is produced by inoculation. Molds, particularly green sand molds, that are not rammed to sufficient hardness...
Book Chapter

By G. Keough
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005203
EISBN: 978-1-62708-187-0
... castings were made in 1953. In the late 1950s, this technology was applied by research institutes, which were looking for a practical means of liquefying and pouring uranium into graphite molds, for example, to produce uranium carbide. An early industrial vacuum arc skull melter was built in 1963...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002165
EISBN: 978-1-62708-188-7
... detail is required. Graphite electrodes can be redressed many times by both methods. Because of the cost of making the master, the method is most economical for repetitive work. Tooling systems to maintain location between EDM machine and abrading machine are used. Molded Copper Tungsten Molded...
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
... surface exhibits some roughness, which depends on the molding materials used in the casting process. The article describes the effects of the casting skin in spheroidal graphite (SG) and compact graphite (CG) irons, as well as the mechanism of casting skin formation. It discusses the physics of liquid...
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
... or batch mixers, where intensive mixing is ensured by the application of shear forces ( Ref 1 ). Compaction is achieved either by hand ramming or automated molding (see the section “ Nonpermanent Mold Processes ” in this article). The most important advantage of green sand is the fast production rate...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005299
EISBN: 978-1-62708-187-0
... explains the sand casting and permanent mold casting of steel. The process design and casting of thin sections are also discussed. thin-wall steel castings castability graphite molds induction melting permanent mold castings sand mold castings steels solidification characteristics melting...
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
.... These frames are called core arbors. Figure 4 shows a cross-sectional view of a mold for casting a cored shell. Note the core arbor, wrapped with burlap, on which the sand has been rammed to form the core. Here, the arbor is used to support the core in an upright position and to center it precisely...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003172
EISBN: 978-1-62708-199-3
... in the casting, or in the drag half of the mold where metallostatic pressure is higher. Penetration defects are generally the result of using a too coarse molding sand or not ramming it tightly enough. However, in cast iron, the most common cause of penetration is graphite expansion near the end...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006831
EISBN: 978-1-62708-329-4
... perpendicular to parting line Mold expansion during baking F 125 Excessive metal thickness at irregular locations on casting exterior Soft or insufficient ramming, mold-wall movement F 126 Thin casting walls over general area, especially on horizontal surfaces Distorted casting F 200...
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
... boxes, which are rammed with a mixture of sand and core binder (see the article “Coremaking” in this Volume). If the cores must be assembled from separately made components, they are pasted together after curing. They are then ready to be inserted into the sand mold. The mold is made by placing...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003508
EISBN: 978-1-62708-180-1
... locations on casting exterior Soft or insufficient ramming, mold-wall movement F 126 Thin casting walls over general area, especially on horizontal surfaces Distorted casting F 200: Casting shape incorrect overall or in certain locations F 210: Pattern incorrect F 211 Casting...