Patent ID: 7533553
Filing Date: 2009-05-19
Classification: B21D,C21D

Abstract:
1. A press for hot-shaping and hardening a hot steel workpiece that is at or above its AC3 temperature, the press comprising: a movable upper die and a stationary lower die having lower and upper confronting faces; means for positioning the hot workpiece between the confronting faces of the dies; a coolant bath at a temperature below the workpiece AC3 temperature and having a liquid level wholly above the face of the lower die; and means for moving the upper die from an upper position wholly above the bath toward the lower die and into a lower position at least partially immersed in the bath and thereby pressing the hot workpiece with the upper die down against the lower die and deforming the workpiece so that it conforms to the shapes of the faces and that it is at least partially immersed in the bath.