Eka Surachman, Heny Hendrayati, Kus Hanaldi, Mochammad Achyarsyah
Numerical simulation is very necessary for predicting the process of freezing castings on gravity casting methods. Centreline shrinkage is often found in casting with a special form of grate-shaped defect due to the presence of an isolated liquid area. This study aims to get a gating system that can minimize the occurrence of centreline shrinkage defects in steel castings using the numerical simulation. Simulation results from several gating system designs show the minimum shape, position and size of centreline shrinkage. The analysis involved a critical fraction solid time, a Niyama criterion and a thermal modulus factor for each casting design. The position of the gating system from this research can be used as a reference for cast steel castings. © School of Engineering, Taylor’s University.
Universitas Pendidikan Indonesia, Jalan Setiabudhi, Bandung, Indonesia
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