The passageway through which the molten metal from the pouring basin reaches the mold cavity is known as: Group of answer choices Sprue Gate Flask Riser
Added by Sean J.
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- Pouring basin: where molten metal is initially poured. - Sprue: the vertical passage through which molten metal flows downward from the pouring basin. - Gate: the channel that connects the sprue to the mold cavity, allowing molten metal to enter the Show more…
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7. During pouring into a sand mold, the molten metal can be poured into the downsprue at a constant flow rate during the time it takes to fill the mold. At the end of pouring the sprue is filled and there is negligible metal in the pouring cup. The downsprue is 6.0 in long. Its cross-sectional area at the top = 0.8 in2 and at the base = 0.6 in2. The cross-sectional area of friction.
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A sprue is 12 inches long and has a diameter of 5 inches at the top, where the metal is poured. The molten metal level in the pouring basin is taken as 3 inches from the top of the sprue for design purposes. If a flow rate of 40 inches/sec is to be achieved, what should be the diameter of the bottom of the sprue? Neglect friction losses and use g = 386 inches/sec^2 (adapted from Kalpakjian and Schmidt, Manufacturing Processes, Pearson)
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Molten metal is poured into the pouring cup of a sand mold at a steady rate of 400 cm3/s. The molten metal overflows the pouring cup and flows into the downsprue. The cross section of the sprue is round, with a diameter at the top = 3.4 cm. If the sprue is 20 cm long, determine the proper diameter at its base so as to main- tain the same volume flow rate.
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