Abstract
Abstract To know more precise the value of overall heat transfer coefficient is on a special importance to programs (software) that models the solidification process for project casting technology in order to optimize them by dimensioning and appropriate placement both the gating system and the risers for eliminate casting defects, shrinkages. The paper aims to determin the value of overall heat transfer coefficient on the cooling curve recorded in casting-solidification real conditions. The values obtained for the overall heat transfer coefficient (2.34 to 25.41) · 10−4 [cal/s.grad.cm2]) for different casting conditions prove that this parameter can not be considered as a constant of the casting mould material.
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