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heat flow

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Image
Published: 01 June 1983
Figure 4.9 Schematic of axial heat-flow apparatus. Thermal grounding is indicated by Δ. More
Image
Published: 01 December 2018
Fig. 6.19 (a) Heat transfer between the die and injected metal, (b) metal flow analysis More
Image
Published: 01 March 2000
Fig. 2 Flow chart of heat balance in direct extrusion More
Image
Published: 01 March 2000
Fig. 9 Flow diagram of heat treatment variables of soft alloy extrusions More
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Published: 01 March 2000
Fig. 10 Flow diagram of heat treatment variables of harder alloys More
Image
Published: 01 December 2016
Fig. 1.33 Model of the (αAl + Si) eutectic solidification in the cast part. (a) Growth of the zone of the eutectic columnar cells from wall to the center. Both main and local heat flows are opposite to the growth direction. Unmodified alloy. (b) Growth of the zone of the equiaxed eutectic More
Image
Published: 01 December 2016
Fig. 1.34 The (αAl + Si) eutectic nucleation and growth in AlSi alloys. (a) Unmodified alloy. Eutectic grain nucleates at the αAl solid solution dendrite tip; local heat flow is consistent with the growth direction. (b) Alloy modified with strontium. Eutectic nucleates individually More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420429
EISBN: 978-1-62708-310-2
..., cellular, and dendritic growth, the basic freezing sequence for an alloy casting, and the variations in cooling rate, heat flow, and grain morphology in different areas of the mold. It also describes the types of segregation that occur during freezing, the effect of solidification rate on secondary...
Image
Published: 30 April 2020
Fig. 3.15 Outline of the differential thermal analysis test, where a sample and reference standard are heated in the same furnace. The temperature for each is recorded by thermocouples, and any difference in temperature is an indication of heat flow in the sample, with thermal lag associated More
Image
Published: 01 August 2005
of the thin fin members. The thickness of the braze preform is adjusted so that there is sufficient braze to form fillets that have adequate dimensions to effect good heat flow between the fins and the face-plates without unduly obstructing the passageways. More
Image
Published: 30 September 2023
Figure 4.8: A wear map for steel on steel using a pin-on-disk arrangement. The normalized load is the load divided by the nominal area of contact times the indentation hardness of the softer material; the normalized velocity is the ratio of sliding velocity to velocity of heat flow [ 2 ]. More
Image
Published: 01 January 2015
Fig. 2.1 Smooth, planar crystal growth is observed at the solid-liquid interface when liquid metals are not undercooled. Growth of long individual grains and protuberances into the liquid are prevented whenever the liquid is above the freezing point. Arrows indicate the direction of heat flow More
Image
Published: 01 November 2013
to the heat flow direction will advance most rapidly. Other orientations tend to be overgrown, due to mutual competition, leading to the formation of a columnar zone . (b) Beyond a certain stage in the development of the columnar dendrites, branches that become detached from the latter can grow independently More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1996
DOI: 10.31399/asm.tb.phtpclas.t64560307
EISBN: 978-1-62708-353-9
... composition of the steel. Fig. 9-2 (a) The thermal conductivity and (b) thermal diffusivity of steels as a function of temperature. (From J.B. Austin, Flow of Heat in Metals , American Society for Metals, Metals Park, Ohio (1942), Ref 1 ) Fig. 9-3 Film heat transfer coefficient...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1983
DOI: 10.31399/asm.tb.mlt.t62860133
EISBN: 978-1-62708-348-5
... and parameters that may be encountered. The examples refer specifically to thermal conductivity but are generally applicable to thermal diffusivity as well. The definition of thermal conductivity is based on empirical observations relating heat flow and temperature gradient. For steady-state, unidirectional...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 1997
DOI: 10.31399/asm.tb.wip.t65930023
EISBN: 978-1-62708-359-1
... rectangular plate ( Fig. 8 ). After the anchor welds have cooled to room temperature, two test welds are made on the specimen. The fillet weld along the plate edges is made first. This weld, called the bithermal weld, has only two-dimensional heat flow. After this weld has cooled, the lap weld is made...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870183
EISBN: 978-1-62708-314-0
... into the pressure application zone for consolidation. If the material requires time for resin flow for full consolidation or crystallinity control, then the press may require heating. If a well-consolidated prepreg is used, then rapid cooling in a cold platen press may suffice. It should be pointed out...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050009
EISBN: 978-1-62708-311-9
.... Induction heating occurs when a strong electromagnetic force field is produced from an induction coil close enough to a part to produce an electric current in the part. The part is heated mainly due to the resistance of the flow of this electric current. The actual heating is a complex function related...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.aceg.t68410103
EISBN: 978-1-62708-280-8
... into the critical surfaces to avoid the potential for metal flow lines. While choosing gating at parting plane, avoid gate metal impingement on the die steel or a metal core. This is to minimize heat checking and poor metal flow pattern. Providing adequate parting plane periphery, to allow space for the gates...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290035
EISBN: 978-1-62708-319-5
... to 25 wt%, depending on the powder. The feedstock, consisting of mixtures of polymers and waxes dispersed between the particles, is heated and forced to flow into a mold or through a die. As the feedstock cools, the binder becomes rigid and holds the particles in place. Extrusion is applied to long...