HIGH-DENSITY MOLDING DEVICE AND HIGH-DENSITY MOLDING METHOD FOR MIXED POWDER

摘要

A first die is filled with a mixed powder that is a mixture of a basic metal powder and a low-melting-point lubricant powder, the internal dimension of the first die being smaller than the internal dimension (=100%) of a second die by 1 to 5%. A first pressure is applied to the mixed powder in the first die to form a mixed powder intermediate compressed body. The mixed powder intermediate compressed body is heated to the melting point of the lubricant powder. A second pressure is applied to the heated mixed powder intermediate compressed body in the second die that has been pre-heated to the melting point of the lubricant powder to form a high-density mixed powder final compressed body.

主权项

1. A mixed powder high-density molding method comprising:
filling a first die with a mixed powder that is a mixture of a basic metal powder and a low-melting-point lubricant powder, an internal dimension of the first die being smaller than an internal dimension (=100%) of a second die by 1 to 5%; applying a first pressure to the mixed powder in the first die to form a mixed powder intermediate compressed body; heating the mixed powder intermediate compressed body removed from the first die to a melting point of the lubricant powder; placing the heated mixed powder intermediate compressed body in a second die; and applying a second pressure to the mixed powder intermediate compressed body in the second die to form a high-density mixed powder final compressed body.