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Gießtechnik, Erstarrung
Dokumenten-Nummer: 57885
Zeitschriftenaufsatz
Hong, Jun-Ho; Choi, Young-Sim; Hwang, Ho-Young
Publikationssprache: Englisch
Diagnosis parameters of mold filling pattern for optimization of a casting system
Diagnoseparameter für das Gießformfüllen zur Optimierung des Gießprozesses
For optimal design of a gating system, the setting of diagnosis parameters is very important. In this study, the
permanent mold casting process was selected because most of the other casting processes have more complicated
factors that influence the mold filling pattern compared to the permanent mold casting process, such as the surface
roughness of mold, gas generation from the mold wash and binder of sand mold, and the gas permeability through a
sand mold, etc. Two diagnosis parameters (flow rate difference and arrival time difference) of molten metal flow pattern
in the numerical simulation are suggested for design of an optimum casting system with a permanent mold. The results
show that the arrival time difference can be used as one important diagnosis parameter of the complexity of the runner
system and its usefulness has been verified via making aluminum parts using permanent mold casting.
Korea Institute of Industrial Technology (KITECH), Incheon, KR
China Foundry
Erscheinungsjahr 2012
Heftnummer 4
S. S.376-380 (5 Seiten, 10 Bilder, 4 Quellen)
Gießtechnik, Erstarrung
Dokumenten-Nummer: 57870
Tagungsbeitrag
Inanlou, Arash; Seyedein, S. Hossein; Aboutalebi, M. Reza
Publikationssprache: Englisch
The Effect of Semi-Solid Parameters on the Microstructure and Hardness of High Chromium Cast
Irons
Einfluss der Semisolid-Parameter auf das Mikrogefüge und die Härte von chromreichen Gusseisen
High chromium cast iron samples of 14% Cr and 24% Cr were produced in sand and permanent mold using semi-solid
casting process. A series of experiments were carried out to clarify the effect of copper cooling plate and mold cooling
rate on microstructure, particularly morphology and sphericity of primary austenite, hardness and heat treatment
cycles. Results show that for 14% Cr and 24% cast irons casting at 10 and 15 deg of inclined plate result in better
sphericity and distribution of primary austenite and carbides. Moreover hardness comparison of both semi-solid iron
alloys using copper cooling plate at of this special morphologies resulted from cooling plate investigated by making
them heat treat at 1050 deg C for 1 and 2 hours. Hardness results show both heat treated 14 and 24% Cr alloy in 1
hours have hardness comparable with those alloys traditionally cast optimum angles with respect to conventional
casting show higher hardness in every condition. Effect but heat treated in 2 hours. Finally X-Ray diffraction pattern
taken from specimens before and after heat treatment confirmed with observed phases in optical microscopy before
and after heat treatment.
Iran University of Science & Technology (IUST), Tehran, IR
Erscheinungsjahr 2010
S. S.84-89
Seiten/Bilder/Tabellen/Quellen: 6S
Giesserei Literaturschau