Evaluating Effects of the Gating Ratio on the Casting Quality of a Steel Pump Body Using the Simulation

مهندسی متالورژی و مواد

Volume 35, Issue 1 - Serial Number 33, April 2024, Pages 23-34   

Document Type: Original Article

DOI: 10.22067/jmme.2024.83486.1116

Author

Morteza Azarbarmas^*

Research Center for Advance Materials, Faculty of Materials Engineering, Sahand University of Technology, Tabriz, Iran.

Abstract

Due to effects of the gating ratio on the amount of shrinkage porosities and thereby on mechanical properties of steel components, optimizing the gating system is one of the interested fields for scientists focused on the casting industry. In this paper, the casting of a steel centrifugal pump body has been simulated and influences of the gating ratio on the casting quality of the obtained component have been evaluated. Investigated parameters involve the place of formed hot-spots, the speed of the liquid flowing from gates and its uniformity. The obtained results show that in the case of the evaluated component, both of the suggested gating ratios of 2:1.15 and 1:3:3 can distribute the melt well in such a way that the last solidified parts are far from the portions experiencing high stresses during the service. However, using the gating ratio of 1:2:1.5 lets that the sprue to be full of the liquid metal. So, the sprue can compensate the occurred shrinkage and almost prevent the entrance of the out gases. Moreover, it was observed that the symmetry of gates with respect to each other does not have an important effect but with respect to the position of the sprue has a crucial role to ensure a similar speed and behavior of the metal flowing in the different gates.

Keywords

Casting Simulation; Gating System; Pump Body; Steel Casting

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