| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a sprue component for casting, for example, a sprue bush, which has excellent cooling efficiency, can shorten the cycle time of casting, has long service life, and can reduce the exchange frequency of components. <P>SOLUTION: The sprue bush 10 having a hollow cylindrical shape is made into an integral structure without being fitted with a ring in its outer peripheral part and a temperature control circuit 13 for passing a temperature regulating fluid, such as cooling water, is formed in a continuous state having preferably and substantially no branching and confluent points along an inner peripheral surface 12 coming into contact with molten metal. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
