Micro-Embossing of Micro-Patterns onto Aluminum Sheet by Table-Top CNC Pressing

摘要

Table-top CNC stamping system was developed to make fine precise forming onto thin work-sheet. Micro-embossing process was employed to investigate the imprinting behavior during precise stamping for various film thicknesses. A micro-patterned die was prepared by chemical etching and oxygen-plasma etching method. This micro-patterned die unit was inserted into a cassette mold-die for stamping test. Pure aluminum sheets with the thickness of 80 μm were employed as a thin film work-sheet in order to describe the imprinting behavior. Micro-grooving pattern was successfully imprinted onto DLC coating by oxygen plasma etching for various grooving widths from 3 to 100 μm and grooving pitches from 7 μm to 200 μm. Aluminum sheet with the aligned, square-wedged patterns was successfully fabricated, aiming at the heat-radiation device.