PRODUCTION OF HIGH TENSION SHEET STEEL PARTS OF POSTHEAT TREATMENT TYPE BY DETONATING PRESSURE

摘要

PURPOSE: To repeatedly operate safely and in short time and to manufacture high tension sheet steel parts of postheat treatment by the high pressure of detonation. ;CONSTITUTION: A combustion chamber 1 is so designed that the cross section gradually decreases from one end 1A as flame progresses, a convergence part having the smallest cross section is formed in the other end 1B, and the end face of a pressure medium in a pressure chamber 12 is faced at the opening of the other end 1B. Pressure is raised because the cross section of the combustion chamber becomes smaller as the flame inside the combustion chamber 1 progresses, and the pressure becomes extremely high at the other end 1B. This high pressure is converted to the pressure medium inside the pressure chamber 12. On a die 16, a high tension sheet steel which is made to have a high strength in a heat treatment after receiving a primary forming is arranged, and the high tension sheet steel P is pressed with the die 16 through the pressure medium and is formed (straightened) into the final prescribed shape.;COPYRIGHT: (C)1994,JPO&Japio