Sheet workpiece forming method, involves inserting sheet workpiece into molding tool at specific temperature, forming workpiece by molding tool, and extracting heat from workpiece during retention period

摘要

The method involves inserting a sheet workpiece into a molding tool at a temperature of 50 degree to 1000 degree and forming the workpiece by the tool, where retention period of the workpiece spent in the tool averages to 1 to 20 seconds. Heat is extracted from the workpiece during the retention period spent in the tool so that the workpiece leaves the tool at a temperature of 20 degree to 600 degree. Alloy elements are made of manganese, aluminum, carbon, silicon, titanium, tungsten, niobium, chromium, nickel, vanadium nitride and boron.