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Unformatted text preview: sectional area at the base of the sprue is 400 mm 2 . The mold cavity has a volume = 0.002 m 3 . Determine (a) the velocity of the molten metal flowing through the base of the downsprue, (b) the volume rate of flow, and (c) the time required to fill the mold cavity. (6 marks) Problem 3 – Chapter 10 In casting experiments performed using a certain alloy and type of sand mold, it took 165 sec for a cube-shaped casting to solidify. The cube was 40 mm on a side. (a) Determine the value of the mold constant the mold constant in Chvorinov's Rule. (b) If the same alloy and mold type were used, find the total solidification time for a cylindrical casting in which the diameter = 30 mm and length = 55 mm. (10 marks) Problem 4 – Chapter 11 An aluminum-copper alloy casting is made in a sand mold using a sand core that weighs 22 kg. Determine the buoyancy force in Newtons tending to lift the core during pouring. (5 marks)...
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This note was uploaded on 03/21/2011 for the course ENGR 3190U taught by Professor Vquan during the Fall '10 term at UOIT.
- Fall '10