Sprue structure for low-pressure casting device and low-pressure casting device having said sprue
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United States of America Patent
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May 14, 2019
Grant Date -
Jan 25, 2018
app pub date -
Feb 19, 2015
filing date -
Feb 19, 2015
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Abstract
A sprue for a low-pressure casting device includes a stalk connection part to be connected to a stalk, a molten metal reservoir and a cavity connection part to be connected to the cavity. The shape of the molten metal reservoir is such that the perimeter of the cross section perpendicular to the flow direction of molten metal gradually increases toward the cavity connection part while the area of the cross section remains constant.
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