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liquid front stop

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Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005277
EISBN: 978-1-62708-187-0
... Abstract This article provides a discussion on ten rules for the effective production of reliable castings. These rules include good-quality melt, liquid front damage, liquid front stop, bubble damage, core blows, shrinkage damage, convection damage, segregation, residual stress, and location...
Book Chapter

Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006474
EISBN: 978-1-62708-190-0
..., on a liquid surface. A pulsed laser captures the diffraction image of the liquid surface, giving an image of the part with a video rate frame of 50 to 60 per second. In Dassault’s system, specimens to be inspected were placed in front of a 10 cm (4 in.) diameter ultrasonic transducer, which can give discrete...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005222
EISBN: 978-1-62708-187-0
..., the solidification shrinkage of this liquid will inevitably produce pores, since feeding becomes impossible. Experimental measurements indicated that feeding stops before the end of solidification at a solid fraction of 0.9 to 0.99, equivalent to a liquid fraction of 0.01 to 0.1 ( Ref 5 ). Taking a volumetric...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005202
EISBN: 978-1-62708-187-0
... is a function of the local solidification rate and the temperature gradient at the liquid-solid interface. To achieve a directed dendritic primary structure, a relatively high temperature gradient at the solidification front must be maintained during the entire remelting process. The growth direction...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006137
EISBN: 978-1-62708-175-7
... is remote. Toxicity Hazards Ammonia, carbon monoxide, and methanol, which are highly toxic, are used routinely in the sintering and heat treating industries. Liquid ammonia produces dissociated ammonia or ammonia vapor, which is used in nitriding. Carbon monoxide is a constituent of exothermic...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005759
EISBN: 978-1-62708-171-9
... to increase the safety awareness and the use of safety practices for gas and liquid piping and electrical equipment within thermal spray installations. construction materials dust dust collector ergonomics piping system piping system integrity monitoring preventive maintenance safety interlocks...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005518
EISBN: 978-1-62708-197-9
... columnar dendrites) and grow in an equiaxed manner in the undercooled region ahead of the columnar front ( Fig. 4 ). If this equiaxed free solid occupies a high volume fraction or has sufficiently enriched the liquid in front of the columnar dendrites, it can block the growth of the columnar structure...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005814
EISBN: 978-1-62708-165-8
... of a liquid quenchant. The rewetting process marks the end of the vapor blanket stage and the beginning of the nucleate boiling stage; the loci of positions where this transition takes place is known as the wetting front. A related quantity is the Leidenfrost temperature ( Ref 41 ); in the context of metal...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003020
EISBN: 978-1-62708-200-6
... quality, process economics, equipment, and tooling. Process Description Resin Transfer Molding Resin transfer molding is a closed-mold, low-pressure process in which a preplaced, dry reinforcement preform is impregnated with a liquid resin in an injection or transfer process ( Fig. 1...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003058
EISBN: 978-1-62708-200-6
... happens to disturb the propagation of this front (e.g., the fracture stops, or the local stress field changes direction). Brittle materials, such as glasses and ceramics, fail in tension. Even when the applied stresses are not tensile, resolved tensile stresses act on discontinuities in the material...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003171
EISBN: 978-1-62708-199-3
.... The distribution of liquid and solid in a casting section during freezing depends on the freezing range of the alloy. Pure metals, which freeze at a single temperature, freeze with a well-defined solidification front. In that part of the casting in which the temperature is below the freezing point, the casting...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006374
EISBN: 978-1-62708-192-4
... physical vapor deposition toxicity wear BRAKES are made of friction materials that are designed to stop the moving object, such as a vehicle, by converting kinetic energy into thermal energy (heat) based on the mechanism of friction between sliding components. The conversion product, heat...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005212
EISBN: 978-1-62708-187-0
... phases of the eutectic structure are organized in the solid in such a way that diffusion in the liquid occurs effectively at a duplex solid/liquid front ( Ref 8 , 12 , 13 , 14 , 15 ). Regions of coupled growth are shown schematically in Fig. 3 for both a symmetric and an asymmetric hypothetical...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006677
EISBN: 978-1-62708-213-6
... for the ion source part of the ion column vary depending on source type, with ultrahigh vacuum required for gas field ion sources, high vacuum for liquid metal ion sources, and medium vacuum for plasma sources. It is typical for the sample chamber to be 1 × 10 6 torr or better (lower pressure), but some...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005112
EISBN: 978-1-62708-186-3
... Double Triple Crank Front-to-back crank Eccentric Toggle Screw Cam Rack and pinion Piston Over direct Geared, overdrive Under direct Geared, underdrive One-point Two-point Four-point Single Multiple Solid Open Adjustable Bench X X … … … X … X … X X X … … X … X...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005355
EISBN: 978-1-62708-187-0
... core knockout machine and the A-frame core knockout machine and lists the advantages and disadvantages of these machines. The article describes the general factors in automated or manual gate removal process. It concludes with discussion on the various types of inspection, such as the liquid penetrant...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003209
EISBN: 978-1-62708-199-3
... the need for a liquid interface (brazing) or the creation of a cast product via melting and resolidification (welding). In its most narrow definition, which is used to differentiate it from other joining processes such as deformation bonding or transient liquid phase joining, diffusion bonding is a process...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006498
EISBN: 978-1-62708-207-5
..., permanent mold, and investment casting, attempt to fill the die cavity in a nonturbulent manner. Using low-viscosity fully liquid metal, typically the metal front velocity must be kept below 0.5 m/s (1.6 ft/s) or so to minimize turbulence ( Ref 4 ). However, attempting to fill a thin-walled steel die cavity...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001484
EISBN: 978-1-62708-173-3
... Provide better cooling of the torch front end Reduce accumulation of metal spatter on the torch Reduce top-edge rounding of the workpiece Permit easier piercing Minimize double arcing In gas-cooled, rather than liquid-cooled, torches, it is the secondary gas that provides the cooling...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005257
EISBN: 978-1-62708-187-0
..., and virtually any material that can be made into liquid or pourable slurries. Centrifugal castings can be best described as isotropic, that is, having equal properties in all directions. This is not true of a forging, rolling, or extrusion. The centrifugal technique is used primarily for the production...