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mold-metal interface interaction

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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
... Abstract The appearance, morphology, and extent of the casting skin are the consequence of mold-metal interface interaction. This article discusses the classification of the mold-metal interaction based on severity: mild mold-metal interaction and severe mold-metal interaction. The casting...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005227
EISBN: 978-1-62708-187-0
...-reinforced aluminum and aluminum alloy (Al-4.5Cu, Al-11.8Si, and Al-4.8Mg) composites Type of composite Metal mold temperature, K Time between pouring and pressurizing, s Applied pressure Pressure time, s Casting temperature, K MPa ksi Plate type 573 10 49 7.1 90 1073 Tubular type...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005510
EISBN: 978-1-62708-197-9
... by the plasma arc. It also receives the metal droplets from the melting bottom face of the electrode, and a molten pool forms below the surface. The use of this reference frame allows accurate treatment of the interactions at the top surface, the behavior of the molten pool, and the heat loss to the mold...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005420
EISBN: 978-1-62708-196-2
... lifetime was predicted to increase by lessening constraint of the mold by loosening bolts ( Ref 38 , 39 ). Often, the prediction of mold cracks requires consideration of the chemical interaction of the liquid metal with the mold, such as formation of brass in copper molds by the preferential absorption...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0009014
EISBN: 978-1-62708-187-0
... interaction involves the flow of molten metal into the mold cavity. As mentioned previously, turbulent flow through gates and other channels can effect the amount of oxidation and consequent dross formation that occurs. Another consideration is the force generated by the molten metal as it flows into the mold...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003402
EISBN: 978-1-62708-195-5
... = τ xyB , which can also be written as μ A ∂ u xA /∂ x = μ B ∂ u xB /∂ x at y = h A for Newtonian fluids. Fig. 5 Boundary condition (bc) at a liquid-liquid interface The boundary conditions of mold filling during the resin transfer molding process are illustrated...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005544
EISBN: 978-1-62708-197-9
... AnyCasting AnyCasting is applicable to all casting processes, including sand mold casting, permanent casting, low- and high-pressure die casting, tilt casting, and investment casting. AnyCasting Co., Inc. www.anycasting.com www.anycasting.com/en/software/anycastingtm.php CAPCAST CAPCAST is a suite...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001338
EISBN: 978-1-62708-173-3
... conditions. These differences and their effects are described below. First, by its very nature, a sound weld must attach to the metals being joined, whereas a casting must not adhere to the mold wall. To achieve this, the mold is treated to prevent adherence, whereas the joint to be welded...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005531
EISBN: 978-1-62708-197-9
... to 70 MPa (10 ksi) and then solidified into the part shapes. The mold material is a hard alloy, such as beryllium-copper, that has high conductivity for rapid heat removal. Fig. 11 The steps in powder injection molding In PIM, metal or ceramic particles are mixed into a polymer binder...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005210
EISBN: 978-1-62708-187-0
... structure in a mold, and both columnar and equiaxed dendrites may be present in a casting ( Fig. 9 ). As the liquid metal is poured into the mold, solid nuclei appear at the mold wall that give rise to a chilled zone. Some of these crystals are then favorably oriented for growth under directional heat flow...
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
... demonstrated the use of wireless communication for data acquisition of hard-to-access mold components such as cores. In other notable work, Sama et al. ( Ref 49 ) reported a case study of mold design optimization based on molten metal flow simulation analysis. Different segments of a casting mold, including...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006488
EISBN: 978-1-62708-207-5
... main methods of MMC solidification processing. It describes the MCC casting methods, such as sand and permanent mold casting, centrifugal casting, compocasting, and high-pressure die casting. The article discusses the MMC infiltration processes in terms of pressure infiltration casting and liquid metal...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005238
EISBN: 978-1-62708-187-0
... in those relations is a daunting task. The coupling between the thermal and the mechanical problems is an additional difficulty. This coupling comes from the mechanical interaction between the casting and the mold components, through gap formation or the buildup of contact pressure, locally modifying...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005501
EISBN: 978-1-62708-197-9
..., such as stress and deformation, microstructure determination, defect formation, and mechanical properties. The primary phenomenon controlling casting is the heat transfer from the metal to the mold. The heat-transfer processes are complex. The cooling rates range from an order of one-tenth to thousands...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005525
EISBN: 978-1-62708-197-9
... ~ k s Δ T δ ~ k s Δ T α s   t Given the assumption that there is no noticeable temperature drop in the metal during this process, all of the heat entering the mold in Eq 29 must be generated by the latent heat release (LHR) at the moving solid-liquid interface...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006572
EISBN: 978-1-62708-290-7
... be categorized into broad functional areas: Solid metal parts and materials Embedded channels Embedded materials Dissimilar materials Some examples of UAM-fabricated parts are shown in Fig. 3 . Figure 3(a) shows the mold (or cavity) component of an injection molding die, made from...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005234
EISBN: 978-1-62708-187-0
.... Application of VOF Models in Casting Simulations Because of their wide use in modeling of casting processes, a more detailed account of how VOF methods are used is provided here. As an example, modeling a basic mold-filling operation involves the tracking of the liquid metal-gas interface...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002482
EISBN: 978-1-62708-194-8
... at the interface through a heat transfer coefficient: (Eq 12) q = − k d T d x | x   =   bound = h ( T − T o ) where h is the effective heat transfer coefficient across the mold-metal interface, T is the casting surface temperature, and T o is the mold...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005522
EISBN: 978-1-62708-197-9
... of the surface temperature distribution over an engine car block immediately after mold filling. For such a large piece of metal, the temperature varies considerably because the cooling rate is high close to the surface. Courtesy of H. Fecht. (c) Cutaway view of the Engine Alliance GP7200 engine for the Airbus...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005669
EISBN: 978-1-62708-198-6
... ). The proprietary method used for casting the open-pored, crucifix-like features within the bone-interfacing implant surface region presumably involves the use of an appropriate mold design during investment casting. Investment casting (also known as the lost wax process) is used to make cast CoCrMo implants...