Patent ID: 6460596
Filing Date: 2002-10-08
Classification: B22D

Abstract:
A method of coating a powder lubricant in a metallic injection molding machine including a die including a stationary die and a movable die, a sprue hole formed in the stationary die, a runner groove, a gate hole and a cavity being formed on parting faces of these dies, a cold plug catcher in the form of a recess communicating with the sprue hole when the movable die is clamped to the stationary die, the cold plug catcher being formed in the movable die, comprising the steps of:decompressing the inside of the sprue hole, the runner groove, the gate hole and the cavity; and introducing the powder lubricant, via the cold plug catcher, into the sprue hole, the runner groove, the gate hole and the cavity, and coating the powder lubricant on the inside of cold plug catcher the sprue hole, the runner groove, the gate hole and the cavity.