Catalog FATH US Industrial Hardware 3.0 - Catalog - Page 333
Information
> Technical
>> Surfaces
SURFACE SPECIFICATIONS AT FATH (Excerpt from FATH norm 0073)
1.8 Barrel Finishing
Preparatory treatment for further finishing (coloring, powder coating...). For bulk ware with smaller irregularities.
1.9. Sandblasting – Glass Bead Blasting
Preparatory treatment for further finishing (coloring, powder coating...). For single parts.
1.10 Roughness and Function Specification of Surfaces
1.10.1 Erosion Structure on visible Plastic Surfaces
All visible surfaces of plastic parts have an eroded structure according to VDI 3400.
Ejectors may not be placed on visible surfaces if not indicated
otherwise.
This is a Ra value of approximately 6.3.
Comparison table VDI 3400 – DIN EN ISO 1302 (approx. values)
Value VDI
Value DIN EN ISO 1302 [μm]
18
0.8
ISO 1302
N6
25
30
36 6.3
42 12.5
45 18
1.6
3.2
N7
N8
N9
N10
N10
1.10.2 Surface Specifications According to DIN EN ISO 1302
Drawings created at FATH usually provide no surface specifications. Manufacturers are
intended to be “as free as possible” in manufacturing as far as all dimensions are correct.
In case surface specifications are made on the drawing these are related to DIN ISO 1302.
If not indicated otherwise, surface specifications refer to the Ra-value.
Visible surfaces erode VDI 3400; Ref. No. XX according to FATH 0073
©2021 | fath24.com
331
SOLUTIONS FOR INDUSTRIAL ECOSYSTEMS
