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发明公开
CN107398543A 镶铸部件及其制造方法 有权 转让

镶铸部件及其制造方法
摘要：
本发明涉及能够容易地拔出在浇铸铸件部时插入的型芯的镶铸部件及其制造方法。覆盖管部(25)的一端侧的内部形成内侧覆盖部(37)。在浇铸铸件部(26)时，使内侧覆盖部(37)介于管部(25)的一端侧的内表面与插入的型芯的顶端侧的外表面之间，能够防止因铸件部(26)的成型收缩引起管部(25)缩小从而导致咬住型芯的现象。由于内侧覆盖部(37)的凹部(38)侧为从管部(25)的一端侧向另一端侧逐渐扩大的锥面(39)，因此，在铸件部(26)成型后，与型芯的顶端侧的外表面接触的内侧覆盖部(37)的凹部(38)侧的锥面(39)相对于型芯的插入方向向相反方向逐渐扩大，从而能够在铸件部(26)成型后容易地拔出型芯。
摘要（英）：

A cast-in insertion member out of which a core inserted during casting of cast portion can easily be pulled, and production method thereof are provided. Inside covering portion is formed to cover the interior of one end of pipe. During the casting, inside covering portion is interposed between the inner surface of the one end of pipe and the outer surface of the tip of the core put into pipe, so that a bite between pipe and the core by contraction of pipe due to molding shrinkage of cast portion can be prevented. Inside covering portion includes tapered surface on the side of recess, which gradually widens from the one end to the other end of pipe. After molding of cast portion, tapered surface making contact with the outer surface of the tip of the core gradually widens in the direction opposite to that of putting the core into pipe.

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