Systematical Approach for Vent Design of Core Out-Gassing Through Development of an Inventive Evaluation Device

  • Heon-Joo KimEmail author


Casting defects caused by the core gas evolution impair the performance of a machine. The estimation of core gas evolution and core out-gassing are necessary for thin-wall high-pressure castings with complicated actual size core systems. The development of our patented device for core out-gassing made possible a systematical approach for the vent design of core out-gassing in the design stage of the core shape and the mold concepts of casting, such as engine parts with complicated core systems. Experimental procedures and analytical reviews on the relative performance evaluation of suction routes of core gas were attempted with aluminum thin-wall cylinder head casting. Also, two different distributions of particle sizes of core sand were evaluated in order to review effects of fine particle of core sand on core out-gassing. The device developed for core out-gassing in this study was composed of a chamber, a vacuum pump, pressure sensors, and a data logger.


core gas evolution core out-gassing suction route of core out-gassing device development for core design 



This work was supported by a Research Grant of Pukyong National University (2019year).


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Copyright information

© American Foundry Society 2019

Authors and Affiliations

  1. 1.Department of Metallurgical Engineering, College of EngineeringPukyong National UniversityBusanSouth Korea

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