Altana Byko-Cut Universal Manual Manual de usuario descargar pdf (Pagina 15)

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6.2.3 How to do the measurement for lm thickness

Step 1: Marking

Make a perpendicular mark to the scratch direction

with a black marker on the panel

Step 2: Cutting

Select the cutter based on predicted lm thickness

and make a vertical cut.

Step 3: Adjustment of microscope

• Place the microscope of the byko-cut Universal

over the cut

• Adjust the top lens for focusing the scale

• Adjust the lower lens for focusing the surface

Step 4: Result

Count the line increments and multiply them with

the appropriate factor given in the conversion table.

Determination according to ASTM method uses the

mils scale

The cut is usually frayed. To increase the precision,

measure several parts of the cut and calculate an

average. For best results the individual coating

layers should have a different color.

The following lm thickness calculation example is

using cutting tool #3.

a = Substrate

b = E-coat ~ 12 x 2 = 24 µm

c = Primer ~ 20 x 2 = 40 µm

d = Base coat ~ 10 x 2 = 20 µm

e = Black marker

Total Film Build: ~ 48 µm

Operation

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Altana Byko-Cut Universal Manual Manual de usuario Pagina 15