Pengaruh curing time dan pemanasan cetakan pasir kering terhadap kadar air, kuat tekan, dan lost of ignition (LOI) untuk aplikasi sand casting

Sand molding has the advantage of being able to cast metals with high melting points, such as steel and nickel. for mold media generally uses a lot silica sand. Some sand molds contain alphaset binders well other binders. Alphaset is technique making metal casting cores that use resin binder catalyst between sands. The addition mixture resin. process specimens test using SiO 2 weight 1000 g 2.1% alphaphenolic 25% from additional elements hardening process. manual mixing sample diameter 50mm in form silencer tests carried out are water content, lost ignition compressive strength size distribution. Good moisture content data on shown temperature variations heating. results testing value increasing heating curing time 30, 60, 90 get 20.45, 22.8 31.85. 30 2.05 distribution suitable castings large, medium small sizes castings, 120, more than 1%, namely 1.06 factors causing mixin above shows an increase temperature. often used produces higher LOI value.