公开(公告)号：US5850868A

公开(公告)日：1998-12-22

申请号：US609673

申请日：1996-03-01

申请人： Yuji Okada ,  Masamichi Okada ,  Tsutomu Ishikawa ,  Takumi Yamamoto ,  Tatsuhiko Sawamura ,  Norio Hayashi ,  Takayuki Ito

发明人： Yuji Okada ,  Masamichi Okada ,  Tsutomu Ishikawa ,  Takumi Yamamoto ,  Tatsuhiko Sawamura ,  Norio Hayashi ,  Takayuki Ito

IPC分类号： B22D18/02 ,  B22C9/10 ,  B22D17/22 ,  B22D29/00 ,  B22D30/00

CPC分类号： B22D29/001 ,  B22D30/00

摘要： A casting method is disclosed in which a resin core is fabricated by using a resin which maintains a mechanical strength satisfying a shape accuracy required for a cast product until solidification of molten metal in contact with the core and is softened when heated beyond the core temperature at which the molten metal in contact with the core was solidified. The removal of the resin core from the cast product after the cast product containing the core from a die, includes a step of forcedly cooling the cast product containing the core down to a predetermined temperature at which the resin core can be removed from the cast product without being broken apart by pulling one of its ends, and a step of withdrawing the core at the predetermined temperature from the cast product having been forcedly cooled down. It is thus possible to cool the core down to a predetermined temperature suited for the withdrawal and preclude the inconvenience that the core being pulled is broken apart.

摘要翻译： 公开了一种铸造方法，其中通过使用树脂来制造树脂芯，所述树脂保持机械强度满足铸造产品所需的形状精度，直到熔融金属与芯接触固化，并且当加热超过芯温度时软化 其中与芯接触的熔融金属固化。 在从模具中含有芯的铸造产品之后，从铸造产品中去除树脂芯包括将包含芯的铸造产品强制冷却到可以从铸造产品中去除树脂芯的预定温度的步骤 通过拉动其一个端部而不会分开，并且在预定温度下从已被强制冷却的铸造产品中取出芯的步骤。 因此，可以将芯冷却到适合于退出的预定温度，并且排除被拉动的芯分离的不便。

公开(公告)号：US5957191A

公开(公告)日：1999-09-28

申请号：US707455

申请日：1996-09-04

申请人： Masamichi Okada ,  Tatsuhiko Sawamura ,  Norio Hayashi ,  Takayuki Ito

发明人： Masamichi Okada ,  Tatsuhiko Sawamura ,  Norio Hayashi ,  Takayuki Ito

IPC分类号： B22D17/22 ,  B22C9/02 ,  B22C9/10 ,  B22D17/24 ,  B22D21/00 ,  B22D21/04

CPC分类号： B22D21/007 ,  B22C9/10 ,  B22D17/24

摘要： A casting method and apparatus using a resin core wherein a portion of a wall of the resin core that receives a greater heat and/or load than other portions of the wall of the resin core, is increased in thickness. As a result, even if the resin core receives more heat and/or load in places, a local deformation or breakage of the resin core is effectively prevented.

摘要翻译： 使用树脂芯的铸造方法和装置，其中树脂芯的壁的比树脂芯的壁的其它部分更大的热和/或负载的壁的厚度增加。 结果，即使树脂芯在某处受到更多的热量和/或负荷，也能有效地防止树脂芯的局部变形或断裂。