| abstract |
(57) [Abstract] [Purpose] Especially when preforming a finely divided raw material, it is possible to prevent leakage of this raw material and shorten the filling time into the mold, and to improve strength and quality. It is possible to obtain an excellent molded product. [Structure] After a raw material 20 is filled in a cavity 14 of a die 12, a first preforming body 22 is obtained by uniaxially applying a first molding pressure with an upper punch 18 and a lower punch 16. Next, the liquid additive is added to the cavity 14, A second molding pressure larger than the first molding pressure is applied to obtain a second preform 24, and the second preform 24 is fired to obtain a compact. |