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公开(公告)号：US5850867A
公开(公告)日：1998-12-22
申请号：US843166
申请日：1997-04-14
IPC分类号： B22C7/06 , B22C15/23 , B22C15/264
摘要： A method of filling a core cavity, wherein the entire core cavity is uniformly filled with highly compacted sand for molding the core without the need of providing many ventholes. The method is characterized in that sand for molding the core is drawn into the core cavity through an inlet to preparatorily fill the cavity, and then the thus prepared sand is repeatedly and sequentially compacted by impulsively pressurizing the sand, starting with the sand farthest from the inlet and ending with the sand nearest to the inlet.
摘要翻译： 填充芯腔的方法，其中整个芯腔均匀地填充有用于模制芯的高度压实的砂，而不需要提供许多通气孔。 该方法的特征在于，用于模制芯的砂通过入口预先填充到空腔中，然后将由此制备的砂通过冲击式加压砂而反复并顺序地压实，从最远离 进口和最接近入口的沙子结束。
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公开(公告)号：US5558148A
公开(公告)日：1996-09-24
申请号：US435476
申请日：1995-05-05
申请人： Nagato Uzaki , Ukichi Oishi , Ryoji Kanayama , Hironobu Amano , Tokiya Terabe
发明人： Nagato Uzaki , Ukichi Oishi , Ryoji Kanayama , Hironobu Amano , Tokiya Terabe
IPC分类号： B22C15/23 , B22C15/276 , B22C15/28 , B22C15/264
CPC分类号： B22C15/28
摘要： Molding sand (5) is fed into a space defined by a pattern plate (2) and a flask (3) mounted on the pattern plate (2), and the space is enclosed at the upper part of the flask (3) by a cover (6). The air in the enclosed space is evacuated to reduce the air pressure between the grains of the molding sand in the enclosed space to 1 Torr to 150 Torr, and then air is introduced into the enclosed space from the upper part of the space so that the pressure in the space can increase at the rate of 15 atm/s to compress the molding sand (5). The method eliminates the need for vent holes and enables the mold to be crack-free since the air flow is not reflected.
摘要翻译： 将成形砂（5）进料到由图案板（2）和安装在图案板（2）上的烧瓶（3））限定的空间中，并且空间被封闭在烧瓶（3）的上部，通过 盖（6）。 封闭空间中的空气被抽真空以将封闭空间中的型砂颗粒之间的空气压力降低到1乇至150乇，然后空气从空间的上部引入封闭空间，使得 空气中的压力可以以15atm / s的速率增加以压缩型砂（5）。 该方法消除了对通气孔的需要，并且使得模具无裂纹，因为空气流不被反射。
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