Copper (>99.9%) is widely used for conductive and heat exchange parts due to its good conductivity of heat and electricity. Therefore, internal flow paths are required for copper parts.
Copper is recognized as a difficult material to apply AM process because the heat given by the beam diffuses instantly due to its high thermal conductivity, despite its low melting point (1,085℃).
JAMPT modify EBM process parameters (“recipe”) and succeeded to manufacture Copper(>99.9%) parts, by taking advantage of long experience since Koiwai’s time.
|Specific heat capacity* (J/kg･K)||411.233333||443.666667||459.76667||422.93333|
|Thermal Diffusivity* (m^2/sec)||0.00011016||0.00011137||9.789E-05||0.0001147|
|Thermal Conductivity (W/m･K)||401.9||438.0||399.8||433.8|
Angle of AM process
Even in the metal AM process, JAMPT could achieve high metal density by adjusting the processing parameters, and realize the expected material properties in terms of both thermal conductivity and electrical conductivity.