| 摘要 |
PROBLEM TO BE SOLVED: To provide a simple method of manufacturing a hardly cracked extrusion molding, capable of restraining a direction of a reinforcing fiber from being oriented along an extrusion direction, and capable of enhancing a strength, and an extrusion molding device. SOLUTION: This method is a method of manufacturing the extrusion molding by extruding a molding material defined hereinafter, from an extrusion port 11 of a die 10 of the extrusion molding device 20 joined with an extruder having a flow passage 2 forcibly fed with the molding material, and the die 10 having sequentially a diameter contracted part 12, a straight pipe part and the extrusion port 11 in a tip of the flow passage of the extrusion molding device 20, the extrusion molding device 20 is provided in a portion to separate an orifice plate 17 having a hole from the extrusion port 11 in an inside of the die 10, by an opening part diameter (d) of the extrusion port, and S2/S1 is 0.9 or less, where S1 represents an opening part area of the extrusion port 11 and S2 represents an opening part area of the hole of the orifice plate. The molding material hereinbefore contains raw material powder, the reinforcing fiber and a solvent. COPYRIGHT: (C)2011,JPO&INPIT |
