morQ

measurement object for roughness Qualification


What is the morQ?

The morQ is a new generation test specimen developed to assess and optimize the AM value chain with a specific emphasis on surface quality and geometrical accuracy.

Think #3DBenchy for powder bed fusion.

The test specimen contains a variety of flat surfaces with different build orientations and a wide range of geometries to form a challenging part to print and post-process. Additional features can be added to support specific application needs. The morQ functions to test the boundaries of AM and post-processing including the application of coatings. Engineers can employ this specimen to optimize processes for component performance.

How to use the morQ

Questions?  Contact us at am@oerlikon.com

  • Print/ Analyze
  • Features
  • Naming conventions
  • Measure/ verify
  • Case study

Get results

Surface roughness

  • Measure each surface with aerial surface texture measurement
    technologies according to ISO 25175.
  • Avoid using profile measurements, as the results may be ambiguous due to the complex surface morphologies on AM Parts.
  • The surfaces will exhibit many structures: melt tracks, embedded powder particles, layer effects, etc. and need to be quantified.
  • The measurements below were taken with the following parameters:
  • Measurement size 2.04 x 2.04 mm
  • Low-pass filter with nesting index S1 = 100 µm
  • Form removal with polynomial = 2
  • S and L filter with nesting index S2 = 10 µm
  • Geometry

    For the verification of surface quality it is important for the morQ to contain complex geometrical shapes that present difficult to reach positions, undercuts, inside and outside surfaces. This presents a challenge for the AM process and any finishing process that may be necessary and coating process. Below, there is information on all surface geometries, labelled according to the naming conventions explained on the previous tab.

    S-F Surface: Waviness
    Top Skin
    Up Skin
    Side Skin
    Down Skin

    Sa = 3.0 µm

    Sa = 12.6 µm

    Sa = 7.1 µm

    Sa = 36.8 µm

    Sz = 22.6 µm

    Sz = 130.1 µm

    Sz = 83.1 µm

    Sz = 307.6 µm

    Sku = 2.6

    Sku = 3.8

    Sku = 5.1

    Sku = 3.9

    Ssk = 0.1

    Ssk = 0.5

    Ssk = 0.6

    Ssk = 0.8

    S-L Surface: Roughness
    Top Skin
    Up Skin
    Side Skin
    Down Skin

    Sa = 0.7 µm

    Sa = 6.9 µm

    Sa = 5.6 µm

    Sa = 14.6 µm

    Sz = 38.5 µm

    Sz = 162.3 µm

    Sz = 92.8 µm

    Sz = 388.6 µm

    Sku = 68.2

    Sku = 9.4

    Sku = 6.2

    Sku = 11.4

    Ssk = 3.7

    Ssk = 1.5

    Ssk = 0.6

    Ssk = 0.5

    SEM Micrographs
    Top Skin
    Up Skin
    Side Skin
    Down Skin

    Unique Identifier
    Orientation
    Feature
    Dimensions (mm)

    L1-1

    SS (90°)

    Flat Surf

    10 x 10

    L2-1

    US (135°)

    Flat Surf

    10 x 10

    L2-2

    EMPTY

    L2-3

    SS (90°)

    Concave Surf

    10 x 10, R: 7.25, C: 2

    L2-4

    EMPTY

    L2-5

    DS (45°)

    Flat Surf

    10 x 10

    L2-6

    EMPTY

    L2-7

    SS (90°)

    Convex Surf

    10 x 10, R: 7.25, C: 2

    L2-8

    EMPTY

    L3-1 (X) TOP

    TS (180°)

    Flat Surf

    10 x 10

    L3-2

    US (135°)

    Trench Surf

    Depth: 2; 1.5:1, 1:1, 0.5:1

    L3-3

    SS (90°)

    Flat Surf

    10 x 10

    L3-4

    DS (40°)

    Tube

    ID: 5, OD: 7; C:11

    L3-5

    BS (0°)

    Flat Surf

    10 x 10

    L3-6

    DS (45°)

    Trench Surf

    Depth: 2; 0.5:1, 1:1, 1.5:1

    L3-7

    SS (90°)

    Flat Surf

    10 x 10

    L3-8

    US (135°)

    Multiple Holes
    (locations given
    from centre)

    ø1 (-3, 2.5), 2 (0, 2.5), 3 (3,
    2.5), 4 (0, -1.5); Depth: 3

    L4-1

    US (135°)

    Flat Surf

    10 x 10

    L4-2

    EMPTY

    L4-3

    SS (90°)

    Concave Surf

    10 x 10, R: 7.25, C: 2

    L4-4

    EMPTY

    L4-5

    DS (45°)

    Flat Surf

    10 x 10

    L4-6

    EMPTY

    L4-7

    SS (90°)

    Convex Surf

    10 x 10, R: 7.25, C: 2

    L4-8

    EMPTY

    L5-1

    SS (90°)

    Flat Surf

    10 x 10

    Want to learn more? Contact us!