Patent ID: 6685880
Filing Date: 2004-02-03
Classification: B22F,B30B

Abstract:
A multi-axial method of making a cemented carbide insert, the method comprising the steps of:providing a press tool with a main cavity, the main cavity having a floor defined by a moveable lower punch; filling a main cavity of the press tool with a cemented carbide powder of a first grade; filling a second cavity of the press tool with a cemented carbide of a second grade, the cemented carbide of the second grade differing from the cemented carbide of the first grade in at least one of composition and grain size; withdrawing the lower punch of the main cavity; introducing the cemented carbide of the second grade directly on top of the cemented carbide powder of the first grade; compacting the powder of the cemented carbide of the first grade and the powder of the cemented carbide of the second grade to form a compact; and sintering the compact.