5. You are a Technologist at casting station at University of Johannesburg. You have been given...

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5. You are a Technologist at casting station at University of Johannesburg. You have been given a task to conducted casting experiment to determine total heat required to accomplish the casting. In addition, determine the casting mould constant used during casting. Use the information in this document to calculate. The experiment done at the following condition. 1. Conducted at room temperature of 25°C 2. Heat certain type of steel scrap in the furnace 130°C above melting point, 3. The amount of metal heated was be 30% more than what is need to fill the mould cavity. 4. Record time taken to solidify was 20 min. Given: Properties of steel kg "/07 Psoap = 2710 (*9/) Density: m Specific heat capacity (solid): C1 = 0.21 (/kg°c) Specific heat capacity (liquid): G-018 (비/kgrc) kg°C, hy = 389 (*/ka) Heat of fusion: kg Melting Temperature = 990 °C Heat required H = pV{C,(Tm – T.) – H; + C(Tp- Tm)} Solidification and Cooling, Chvorinov's Rule: TTS Cm )" A 5. You are a Technologist at casting station at University of Johannesburg. You have been given a task to conducted casting experiment to determine total heat required to accomplish the casting. In addition, determine the casting mould constant used during casting. Use the information in this document to calculate. The experiment done at the following condition. 1. Conducted at room temperature of 25°C 2. Heat certain type of steel scrap in the furnace 130°C above melting point, 3. The amount of metal heated was be 30% more than what is need to fill the mould cavity. 4. Record time taken to solidify was 20 min. Given: Properties of steel kg "/07 Psoap = 2710 (*9/) Density: m Specific heat capacity (solid): C1 = 0.21 (/kg°c) Specific heat capacity (liquid): G-018 (비/kgrc) kg°C, hy = 389 (*/ka) Heat of fusion: kg Melting Temperature = 990 °C Heat required H = pV{C,(Tm – T.) – H; + C(Tp- Tm)} Solidification and Cooling, Chvorinov's Rule: TTS Cm )" A

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