Kardo Rajagukguk, Suyitno Suyitno, Harwin Saptoadi, Indraswari Kusumaningtyas, Budi Arifvianto, Urip Agus Salim, Muslim Mahardika, Eko Pujiyulianto, Laurens Katgerman
This research aims to evaluate horizontal and vertical constrained rod casting (CRC) molds on hot tearing susceptibility (HTS) of Al-xCu casting alloys with 2.2, 3.6, 7.5, and 12.5 percent Cu. The hot tears on the casting product were observed using a macroscopic approach. In addition, the hot tearing susceptibility of each casting product prepared using these molds was evaluated using the HTS formula. The results show that the vertical CRC mold has a higher HTS value than the horizontal CRC mold. The rod length is a significant factor in causing hot tearing. Longer rods are more susceptible to hot tearing. The horizontal CRC mold provides a clearer effect of rod length and Cu composition on the average HTS value. In the vertical CRC mold, the effect of Cu composition on the average HTS value is less clear. Therefore, it is highly recommended to use horizontal CRC mold for HTS testing of aluminum casting alloys. © American Foundry Society 2024.
Department of Mechanical and Industrial Engineering, Faculty of Engineering, Universitas Gadjah Mada, Jl. Grafika 2, Yogyakarta, 55281, Indonesia; Center for Innovation of Medical Equipment and Devices (CIMEDs), Universitas Gadjah Mada, Jl. Teknika Utara, Yogyakarta, 55281, Indonesia; Department of Mechanical Engineering, Institut Teknologi Sumatera (ITERA), Jl. Terusan Ryacudu, South LampungLampung, 35365, Indonesia; Department of Mechanical Engineering, Faculty of Engineering, Universitas Tidar, Jl. Kapten Suparman 39, North Magelang, 56116, Indonesia; Center for Innovation of Medical Equipment and Devices (CIMEDs), Universitas Gadjah Mada, Jl. Teknika Utara, Yogyakarta, 55281, Indonesia; Department of Materials Science and Engineering, Delft University of Technology, Mekelweg 2, Delft, 2628CD, Netherlands; Katgerman Aluminium Technology, van Beuningenlaan 10, Leiden, 2334CC, Netherlands