| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a core capable of satisfying both of pressure resistant strength and the disintegrative property, a method of manufacturing the core for manufacturing a hollow cast product by high pressure casting, and a light alloy high pressure casting method using the core. <P>SOLUTION: In the method of manufacturing the core of light alloy high pressure casting, a binding sand filled core 33 used for a mold 31 is made in order to form a hollow part in the cast product. In a pipe forming process, a metal pipe 24 is plastically machined to be a shape in accordance with the hollow part. In a process for forming sand with a binder, sand to be put into the metal pipe and the binder collapsing a clod of the sand 42 with the binder at a desired temperature are stirred, and the sand with the binder can be prepared. In a filled core forming process, the sand with the binder is filled in the metal pipe, is cured, and then, is sealed by first and second caps 44 and 45, and thus, the binding sand filled core can be obtained. In the light alloy high pressure casting method, molten metal 36 is injected to the mold having the binding sand filled core in a core set injecting process. In a sand removing process, the sand is removed from the metal pipe. <P>COPYRIGHT: (C)2012,JPO&INPIT |
