ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
An original three-dimensional (3D) model of solidification is used to describe the processof solidification and cooling of massive 500x1000x500 mm cast-iron castings in sand moulds. Thecalculated model of the kinetics of the temperature field of the casting is verified during castingwith temperature measurements in selected points. The following dependences are later determinedaccording to the experimental and calculated data: the average size of the graphite spheroids rg,graphite cells Rb and the average distances among the particles of graphite Lg – always as a functionof the local solidification time θ [xi, yi, zi]. Furthermore, it has been found that the given basiccharacteristics of the structure of the cast-iron (rg, Rb and Lg) are a linear function of the logarithmof the local solidification time θ. The original spatial model of solidification can therefore be usedin its first approximation for the assessment of the pouring structure of massive cast-iron castings
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/18/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.567-568.109.pdf
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