| 摘要 |
Surface treatment layer (11) is formed on surface (10) of through-hole (1) so that the surface (10) has an angle (X) of contact with solution (L) which is smaller than an angle (Y) of contact of die (2) per se with solution (L). Thus, at application of solution (L), the wetting of through-hole (1) with solution (L) is increased, so that the solution (L) can be extended over the surface treatment layer (11), namely, the entire surface of the through-hole (1). Consequently, the entire surface can be provided with a crystallization layer by performing water evaporation. As a result, molding at higher temperature can be realized, and high-density powder molding products can be stably obtained. Furthermore, a crystallization layer can be formed by applying solution (L) having a lubricant dissolved in a solvent into a homogeneous phase to molding part (1A) and evaporating the solution (L) to thereby effect crystallization on the molding part.
|
