METHOD FOR MANUFACTURING A MULTI-CLOSED SECTION TYPE ELEMENT WITH SUPERIOR SHOCK ABSORPTION PERFORMANCE SING HYDROFORMING AND A MULTI-CLOSED SECTION TYPE PARTS MANUFACTURED BY THE SAME

摘要

PURPOSE: A method for manufacturing a multi-closed section type element using hydroforming and a multi-closed section type parts manufactured by the same are provided to reduce the weight of parts and integrate multiple elements.;CONSTITUTION: A method for manufacturing a multi-closed section type element using hydroforming comprises a step of preparing a hydroforming material(30) by joining one or more second elements(20) to a first element(10) and making into a pipe and a step of manufacturing a multi-closed section type element through hydroforming that applies liquid pressure to at least one side of the pipe and between the first and second elements. The first element is a plate to be formed into a pipe. The second elements are reinforced plates to be joined to the first element in a fixed pattern.;COPYRIGHT KIPO 2012