| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an extrusion molding machine capable of obtaining a molding with fewer remaining bubbles by sufficiently deaerating a raw material inside a vacuum chamber. <P>SOLUTION: The extrusion molding machine 1 has a vacuum chamber 6 between an upper stage screw 4 and a lower stage screw 8 for kneading and extruding the raw material, and in the extrusion molding machine 1, a shredding tool 5 for shredding the raw material crossing the flowing direction of the raw material is provided in front of the vacuum chamber 6. When the extrusion molding machine 1 is used, since the raw material can be sufficiently deaerated inside the vacuum chamber 6 by shredding the raw material, the molding with fewer remaining bubbles is obtained. Thus, the molding has fewer risks of producing cracks during baking or producing defects of a pinhole or the like in an obtained sintered body. <P>COPYRIGHT: (C)2013,JPO&INPIT |
