PERFORATED SANDWICH PANEL AND A MANUFACTURING METHOD THEREOF IN WHICH THE POROSITY IS CONTROLLED BY REGULATING THE PARTICLE DIAMETER OF POWDER CONSTITUTING A PREFORM

摘要

PURPOSE: A perforated sandwich panel and a manufacturing method thereof are provided to produce a sandwich panel having porosity through a simple process, thereby reducing manufacturing costs and improving productivity. ;CONSTITUTION: A method for manufacturing a perforated sandwich panel(100) is as follows. A perforated preform(120) made from a single kind of metal powder 100weight% and a metal plate(140) made from the same metal are prepared. The metal plate is laminated on the outer side of the perforated preform. The laminate is heated in a vacuum atmosphere so that a sandwich panel having porosity is obtained.;COPYRIGHT KIPO 2011