Patent ID: 6562291
Filing Date: 2003-05-13
Classification: B22F,B30B

Abstract:
A process for the manufacture of compressed articles, particularly cemented-carbide cutting blade inserts, by compacting metallic powder and subsequently sintering the compact, by means of a press having a die-plate with a die-bore, a top ram and a bottom ram, both rams cooperating with the die-bore, comprising the steps of:charging a predetermined volume of the metallic powder into the die-bore, with the bottom ram taking a predetermined charging position within the die-bore, while the top ram is above the die-bore, displacing the top ram into the bore to a predetermined first position and displacing the bottom ram towards the top ram to a second position, displacing the bottom ram toward the top ram and simultaneously measuring the compressive force for the bottom ram with the shift of the bottom ram being effected along a predetermined curve desired for the compressive force, and terminating the movement of the bottom ram when a predetermined value for the compressive force is reached.