6/13/2012

EDM Surface, Relations between surface roughness and draft angle

Relations between surface roughness and draft angle
Surface roughness (EDM surface) Draft angle
AGIE VDI Carmilles Ra (um) PA PC ABS
             
10 42 39 11 4 5.5 4.5
9 39 36 7 3 4.5 3.5
8 36 33 5 2 3.5 2.5
  33 30 3.15 1.5 2 2
7 30 27 2.24 1 2 1.5
6 27 24 1.6 0.5 1.5 1
5 21 18 0.8 0.5 1 0.5
ESS (Ericsson Surface Standard) is roughly VDI*5

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