pISSN : 1598-706X / eISSN : 2288-8381
한국주조공학회지 (40권2호 34-42)
Effect of Process Parameters on Thick-wall Thickness Casting Characteristics in Counter Pressure Casting Process
차압주조공정에서 공정변수가 후육 주조품의 주조특성에 미치는 영향
Ho-jung Kang*,**, Pil-hwan Yoon*, Gyu-heun Lee*, Eok-soo Kim** and Jin-young Park*,†
Korea Institute of Industrial Technology*, Pusan National University**
The effects of the initial balancing pressure, filling pressure and maximum build-up pressure on the casting characteristics of the thick-wall thickness casting during the counter-pressure casting process were investigated. Water model experiment and a computer simulation were carried out to evaluate the characteristics during the filling and solidification stages in counter-pressure casting (CPC); as a reference, the low-pressure casting (LPC) process was used. The average dendrite cell size decreased with an increase in the solidification rate and maximum build pressure casting (LPC) process was used. The average dendrite cell size decreased with an increase in the solidification rate and maximum build-up pressure. A turbulent flow occurred during the filling stage of the LPC process, resulting in the formation of inner gas, while a lamellar flow pattern dominated during the CPC process and was more evident with an increase in the initial balancing pressure, improving the mechanical properties of the castings.
Counter pressure casting (CPC), Casting characteristics, Water model experiment, Initial balancing pressure, Max. build-up pressure